CN201084666Y

CN201084666Y - An electronic electromagnetic type intelligent switch

Info

Publication number: CN201084666Y
Application number: CNU2007200325210U
Authority: CN
Inventors: 刘天保
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-16
Filing date: 2007-08-16
Publication date: 2008-07-09
Anticipated expiration: 2017-08-16

Abstract

The utility model provides an electronic electromagnetic intelligent switch for electric power system, which is characterized in that: an electronic electromagnetic intelligent arc quenching device is arranged on the static contactor base of hand-operated or electric-driven isolation switch, when the switch is open-circuited, the moving contactor leads electric arm into the arc quenching chamber by the auxiliary contactor. The arc quenching chamber is composed of five segmental arc interruption areas that are connected in series, the front three segmental arc quenching areas are arranged about the magnetic blowout coil, the rear two segmental arc quenching areas are arranged at front end of the magnetic blowout coil, simultaneously the closed arc quenching device filled with vacuum or sulfur hexafluoride is arranged in the arc quenching chamber, thereby having strong arc quenching capability, besides, a high voltage pulse detection device is added in the fault detection circuit, so as to make the detection be more accurate, thereby avoiding faulted switch closing. The utility model has the advantages of simple structure, strong arc quenching capability, obvious trip-off point, low cost, and simple maintenance. The utility model is applicable for medium-high voltage electric power system as circuit breaker.

Description

A kind of electronic electromagnetic intelligent switch

Technical field

The utility model relates to a kind of electric power system high-voltage switch gear, especially a kind of electronic electromagnetic intelligent switch.

Background technology

The applicant discloses a kind of electronic electromagnetic intelligent switch in 200420091732.8, its structure is comparatively simple, and also there are the following problems: the one, when electric current hour, electric arc is the thrust quantity not sufficient around coil, arc motion speed is fast not enough; The 2nd, coil inside and outside ferromagnetic area imbalance, space utilization is insufficient; The 3rd, electronic loop diode consumption when cutting off big electric current is also more; The 4th, when closing a floodgate in the electronic intelligence loop, can not judge exactly has fault-free etc.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides the electronic electromagnetic intelligent switch that a kind of arc extinguishing speed is faster, ability is stronger, reliability is higher, manufacturing cost is lower.

The purpose of this utility model is achieved through the following technical solutions: a kind of electronic electromagnetic intelligent switch, comprise isolating switch, on mains side fixed contact 2 bases of isolating switch, arc extinguisher I is installed, this device is composed in series by five sections arc extinguishing districts: first section arc extinguishing district is connected to blowout coil 25 and alloy arc extinguishing grid pieces 17 in parallel, the end of blowout coil 25 is connected to auxiliary contact 11, and the auxiliary contact 10 of initiating terminal is connected with striking contact 3 on the fixed contact 2; Second section arc extinguishing district is arranged on

auxiliary contact

11 and 12, be connected to coil 26 and ceramic arc-chute 18 in parallel, auxiliary contact 12 be close to coil case 34 from front end around to the rear end, above-mentioned two sections arc extinguishing districts are arranged at the below of

blowout coil

25,26,

blowout coil

25,26 is on same skeleton, in wear with unshakable in one's

determination

35,35 two ends unshakable in one's determination outwards are extended into two zones, are close to ceramic arc suppressing cover 39 and airtight arc control device IV both sides; The 3rd section arc extinguishing district is arranged on

auxiliary contact

12 and 13, preceding, last, the rear that wherein comprise

blowout coil

25,26, preceding, the top of

blowout coil

25,26 are provided with ceramic arc suppressing cover 39, on it, the rear is provided with alloy arc-chute 20, be provided with airtight arc control device IV in the wings, be provided with contact in the airtight arc control device IV, two ends are in parallel with resistance 27, pottery arc-chute 22 and alloy arc-chute 20 be connected in series mutually again be serially connected resistance 28, protective tube 29 in parallel, above-mentioned two parallel circuitss are serially connected again; The 4th section arc extinguishing district is arranged on 14 of auxiliary contact 13 and auxiliary contacts, and the high back-pressure diode 30 of arc extinguishing grid pieces in parallel 23 and grouping is set; The 5th section arc extinguishing district is arranged on

auxiliary contact

14 and 15, and arc extinguishing grid pieces 24 is set.

In the such scheme, be provided with ceramic grid sheet 22 in the ceramic arc suppressing cover 39 in the 3rd section arc extinguishing district, the shape of described ceramic grid sheet 22 is arranged to be narrowed down, shortened by long by thick attenuation, spacing by wide backward in the past, and the both sides, top of described ceramic arc suppressing cover 39 have arc spraying mouth 41 alternately.

For strengthening the insulation between 35 front and back unshakable in one's determination, add the insulation iron core made from the iron wire of insulation porcelain glaze sintering 36 in 35 inboards unshakable in one's determination, described insulation unshakable in one's determination 36 and unshakable in one's determination 35 is joined through insulation.

Be to improve the speed of arc motion, especially when the speed of electric current during at zero cross near, in auxiliary contact 12 both sides the acceleration iron core made from the iron wire of insulation porcelain glaze sintering 38 is set, described accelerations iron core 38 and iron core 35 join through insulation.

Be provided with by a lead around circle or a few striking contact coils 44 that make at the mains side back side of fixed contact 2, at the coil 44 terminal a slice electrical conductivity alloy plates 45 that connect, weld a lead and extend back into striking contact 3 on the top of alloy conductive plate 45, the iron core 46 that the bottom welding is made up of iron plate, the end of striking contact 3 is connected with the end 151 of checkout gear II and the auxiliary contact 10 at coil top, described unshakable in one's determination 46 be positioned at described striking contact coil 44 inner and with its mutual insulating, two outsides unshakable in one's determination of fixed contact 2 fix with elastic clip 47.

Arc motion speed when disconnecting in order to accelerate switch, on moving contact 4, be welded with the coil 80 of a circle or part circle, weld with high-resistance material 76 at some places between coil 80 and the moving contact 4, and walk around moving contact 4 place's pads at it and connect with insulation cushion 78 usefulness conductive plates 75, conductive plate 75 is fixed on the moving contact 4 by bolt 79.

Pottery arc-chute 18 both sides are provided with the iron wire of insulation glaze sintering or the iron core 49 that makes with ferro-silicon-aluminium, and iron core 49 joins by insulation with 35 sides that are connected unshakable in one's determination; Ceramic arc extinguishing grid pieces 48 in the described ceramic arc-chute 18 is set to fan-shaped and is separated with narrow groove 42.

The single grid sheet of the alloy arc-chute 20 in the 3rd section arc extinguishing district is provided with has rightabout

ledge

81 and 82, and two kinds of grid sheets are alternate, and to add insulation cushion superimposed, uses insulated bolt fastening again.

For

balance coil

25,26 inside and outside ferromagnetic area and energy, at

coil

25,26 rear end lower is provided with enclosed vacuum or fills arc control device IV with sulfur hexafluoride gas, described airtight arc control device IV comprises ceramic package 69, ceramic arc extinguishing grid pieces 51 is set in ceramic package 69, run-on tab 52 and contact contact 50, one of described contact contact 50 is with run-on tab 52 and stretch out line and be connected, another of

contact contact

50 and 52 of run-on tabs leave for movable gap, connect a conducting rod 54 again by outside the expansion joint 53 to airtight arc control device IV, described contact contact 50 can be arranged to dual mode: a kind of is thermojunction type, another kind of for contacting contact type: described contact contact type is for to be connected described contact contact 50 with movable conducting rod 54, conducting rod 54 is connected with intermediate insulation bar 58 by expansion joint 53, the two ends of intermediate insulation bar 58 are provided with sliding tray 56, the centre is provided with fixing rotation axis 57, and the two ends of intermediate insulation bar 58 are connected with conducting rod 54 and driver respectively by sliding tray 56.

Described driver can be set to three kinds of forms: first kind is electromagnetic type, comprises air chamber 61 and iron 63, and pore 62 is set in air chamber 61, and described iron 63 front ends are fixed with insulating bar 67, are wound with coil 66 on the insulating bar 67, and insulating bar 67 front ends are provided with spring 68; Second kind is the thermal expansion rod-type, comprises fixing spring 60 and thermal expansion bar 59; The third is the thermal expansion tubular type, comprises thermal expansion pipe 71, expansion joint 72, reaches resistance wire 73, is filled with liquid 74 in the described thermal expansion pipe 71.

Be provided with insulation enamel 85 and narrow groove 86 in the such scheme near the two ends fastening bolt of the arc extinguishing grid pieces 23 described in the 4th section, the 5th section arc extinguishing district; Be provided with insulation enamel 83 near the two ends fastening bolt of described

auxiliary contact

13,14; Simultaneously, the detection contact device 89 that matches and use with auxiliary contact 13 is set also, detection contact device 89 comprises insulating cylinder 90, detection contact 91 and lead 93, is provided with spring 92 in insulating cylinder 90; In addition, when auxiliary contact 13 is realized fault detection capability, the are-tight detection contact 87 of elasticity is set in its underpart, detection contact 87 that elasticity is are-tight is respectively to weld two spring steel wires 88 in auxiliary contact 13 both sides, respectively welds two detection contact before the spring steel wire 88.

High back-pressure diode 30 described in the 4th section arc extinguishing district of this programme is set to one or several diodes and is concatenated into one group, and two ends of each grouping all connect into an independently arc extinguishing unit with corresponding auxiliary contact, and standby diode is set.

In order to realize having the purpose of intelligent function, intelligent apparatus is set in such scheme, this device comprises the failure detector II that is arranged on the arc extinguisher I and is arranged on switching mechanism case 7 interior fault identification device III two parts and forms; Simultaneously, isolating switch power side lead-in wire 5 is provided with idiostatic current transformer 6, and the secondary circuit of current transformer 6 is divided into two groups of

luminous tube

116 and 117 usefulness optical fiber 115 by being arranged on supporting insulator inside signal is reached the interior fault identification device III of switching mechanism case 7.

Failure detector II in the such scheme comprises ceramic box 104 and is fixed on the piezo-resistance at the push rod unshakable in one's determination place of closing a floodgate, discharging gap 95, run-on tab 102, irony arc-chute 103 and ceramic arc-chute 99 are set in the described ceramic box 104, be parallel with rightabout diode 100 and thermistor 101 on the described irony arc-chute 103, described discharging gap 95 is connected with blowout coil 97, in parallel with high resistant resistance 98 again, be in series with temperature-sensitive or thermo-sensitive resistor 96 then.

Fault identification device III in the such scheme comprises luminous tube 116,117, optical fiber 115, trip(ping) circuit V and closing circuit VI, and described trip(ping) circuit V is linked in sequence by photosensitive tube 118, adjustable resistance 123, monostable clocked flip-flop 124, triode 125, piezo-resistance 127, triode 126 and breaking coil 129 and forms; Described closing circuit VI is made up of photosensitive tube 119, adjustable resistance 122, monostable clocked flip-flop 135, triode 133, small resistor 131 and travel switch contact 137, piezo-resistance 136, triode 134, small resistor 132 and closing coil 1 30.

In addition,, be fixed with insulating bar 105 and fuse fixed contact 107 on the described moving contact 4 when when the on-load switch, the cartridge fuse 106 that fuse moving contact 108 connects be arranged on buckling on the described

insulating bar

105 and 109 join.

Compared with prior art, the utlity model has following beneficial effect:

1, arc extinguishing speed is fast, and system shock and damage are reduced, and alleviates the burn to arc control device, and its is prolonged in life-span, has installed vacuum additional or has filled airtight arc control device IV with sulphur hexafluoride, and the arc extinguishing ability improves a lot.

2, diode is arranged to several separate units and all be added with auxiliary contact, is made that other was unaffected when individual diode was damaged at each two ends, unit, easily reserve standby, the reliability height.

3, the intelligent apparatus detection failure is carried out several times, the accuracy height, and the control of closing a floodgate is afterburning several times, and the impact of closing a floodgate is little, has fault trip speed fast, and is little to system shock.

Description of drawings

Fig. 1 is the mounting structure schematic diagram of the utility model intelligent switch;

Fig. 2 is the circuit theory diagrams of arc extinguisher I in the utility model;

Fig. 3 is the cross section structure schematic diagram of arc extinguisher I in the utility model;

Fig. 4 is the cutaway view of A-A among Fig. 3;

Fig. 5 is ceramic arc suppressing cover 39 structural representations among Fig. 3;

Fig. 6 is a B-B cutaway view among Fig. 5;

Fig. 7 is the structural representation of fixed contact 2 among Fig. 3;

Fig. 8 is a C-C cutaway view among Fig. 7;

Fig. 9 is the scheme of installation of ceramic arc-chute 18 among Fig. 3;

Figure 10 is the cutaway view of D-D among Fig. 9;

Figure 11 is the structural representation of airtight arc control device IV;

Figure 12 is an E-E cutaway view among Figure 11;

Figure 13 is second kind of example structure schematic diagram of driver among Figure 11;

Figure 31 is the third example structure schematic diagram of driver among Figure 11;

Figure 14 is the structural representation of moving contact 4 among Fig. 1;

Figure 15 is first kind of example structure schematic diagram of alloy Gate sheet 20 among Fig. 3;

Figure 16 is the left view of Figure 15;

Figure 17 is second kind of example structure schematic diagram of alloy Gate sheet 20 among Fig. 3;

Figure 18 is the left view of Figure 17;

Figure 19 is

auxiliary contact

13,14 structural representations among Fig. 3;

Figure 20 is arc extinguishing grid pieces 23 and 24 a structural representation among Fig. 3;

Figure 21 is the another kind of example structure schematic diagram of auxiliary contact 13;

Figure 22 is a F-F cutaway view among Figure 21;

Figure 23 is the structural representation of detection contact device 89;

Figure 24 be among Figure 23 G to diagrammatic sketch;

Figure 25 is the circuit theory schematic diagram of intelligent trouble checkout gear II;

Figure 26 is ceramic box 104 and grid sheet circuit connection diagram;

Figure 27 is the H-H cutaway view of Figure 26;

Figure 28 is the structural representation in the insulator among Fig. 1;

Figure 29 is insure a kind of example structure schematic diagram of a tool of moving contact 4 among Fig. 1;

Figure 30 is intelligent trouble identification device III circuit theory diagrams among Fig. 1.

Among the figure: I is an arc-control device, and II is a failure detector, and III is the fault identification device, and IV is airtight arc control device, and V is trip(ping) circuit, and VI is a closing circuit; 1 is arc control device, 2 is fixed contact, 3 are the striking contact, 4 is moving contact, and 5 are the mains side lead-in wire, and 6 is current transformer, 7 is mechanism case, 10,11,12,13,14,15 is auxiliary contact, and 16 is the iron railings sheet, and 17 is the alloy Gate sheet, 18 is ceramic grid sheet, 20 is the alloy arc extinguishing grid pieces, and 22 is ceramic grid sheet, and 23 is iron and alloy Gate sheet, 24 is the iron arc extinguishing grid pieces, 25 is that coil 1,26 is a

coil

2,27,28 is resistance, 29 is protective tube, 30 is diode, and 34 is coil case, and 35 is magnetic bobbin core, 36 iron cores that make for iron wire, 38 is unshakable in one's determination for quickening, and 39 is ceramic arc suppressing cover, and 41 is arc spraying mouth, 45 is the electrical conductivity alloy plate, 46 is unshakable in one's determination, and 47 is the elasticity card, and 48 is ceramic combination grid sheets, 49 is iron wire enamel iron core, 50 are the contact contact, and 51 is ceramic grid sheet, and 52 is run-on tab, 53 is expansion joint, 54 is conducting rod, and 56 is sliding tray, and 57 is fixed bias circuit, 58 is the intermediate insulation plate, 59 are the thermal expansion bar, and 60 is spring, and 61 is air chamber, 62 is spilehole, 63 is iron, and 66 is coil, and 67 is insulating bar, 68 is spring, 69 is confined chamber, and 70 is resistance, and 71 are the thermal expansion pipe, 72 is expansion joint, 73 is resistance wire, and 74 is liquid, and 75 is conductive plate, 76 is the high-resistance metal solder joint, 78 is insulation cushion, and 79 is fixed screw, and 80 is coil, 81,82 is ledge, 83,85 is the porcelain insulating glaze, and 86 is narrow groove, and 87 is detection contact, 88 is steel wire, 89 is the detection contact device, and 90 are the insulation bucket, and 91 is detection contact, 92 is spring, 93 is lead, and 95 is discharging gap, and 96 is thermo-sensitive resistor, 97 is blowout coil, 98 is high resistant resistance, and 99 is ceramic grid sheet, and 100 is diode, 101 is thermo-sensitive resistor, 102 is run-on tab, and 103 is the iron railings sheet, and 104 is ceramic box, 105 is insulating bar, 106 is protective tube, and 107 are the insurance fixed contact, and 108 are the insurance moving contact, 109 is silk tool buckle, 115 is optical fiber, 116,117 is luminous tube, 118,119 is photosensitive tube, 120,121 is electric capacity, 122,123 for jumping, the combined floodgate adjustable resistance, 124 is monostable clocked flip-flop, 125,126 for being the tripping operation triode, 127 is presser sensor resistance, 129 is breaking coil, and 130 is closing coil, 131,132 is the combined floodgate small resistor, 133,134 is the combined floodgate triode, 135 is monostable clocked flip-flop, and 136 is presser sensor resistance, and 137 is combined floodgate stroke auxiliary switch.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in detail.

Fig. 1 is the mounting structure schematic diagram of the utility model intelligent switch, in Fig. 1, arc extinguisher I is fixedly mounted on the base of mains side fixed contact 2 of isolating switch, on isolating switch power side lead-in wire 5 idiostatic current transformer 6 is installed, the luminous tube of the secondary circuit of current transformer 6 by supporting insulator inside reaches intelligent apparatus in the switching mechanism case 7 with optical fiber with signal.Simultaneously, failure detector II is installed on arc extinguisher I, moving contact 4 matches with mains side fixed contact 2 and realizes the function of switch.

Fig. 2 is the circuit theory diagrams of arc extinguisher I in the utility model, in Fig. 2, arc extinguisher I is composed in series by five sections arc extinguishing districts, first section blowout coil 25 and alloy arc extinguishing grid pieces 17 that the arc extinguishing district is connected to and connects, the end of blowout coil 25 is connected to auxiliary contact 11, and the auxiliary contact 10 of initiating terminal is connected with striking contact 3 on the fixed contact 2; Second section arc extinguishing district is arranged on

auxiliary contact

11 and 12, coil 26 that is connected to and connects and ceramic arc extinguishing grid pieces 18; Above-mentioned two sections arc extinguishing districts are arranged at the below of

blowout coil

25 and 26;

Auxiliary contact

12 and 13 are the 3rd section arc extinguishing district, preceding, last, the rear that wherein comprise

blowout coil

25,26, preceding, the top of

blowout coil

25,26 are provided with ceramic arc suppressing cover 39, on it, the rear is provided with alloy arc-chute 20, be provided with airtight arc control device IV in the wings, be provided with contact in the airtight arc control device IV, two ends are in parallel with resistance 27, pottery arc-chute 22 and alloy arc-chute 20 be connected in series mutually again be serially connected resistance 28, protective tube 29 in parallel, above-mentioned two parallel circuitss are serially connected again;

Auxiliary contact

13 and 14 are the 4th section arc extinguishing district, high back-pressure diode 30 parallel connections of ferromagnetics and alloy arc extinguishing grid pieces 23 and grouping, and the 5th section arc extinguishing district is arranged on

auxiliary contact

14 and 15, wherein is provided with iron arc extinguishing grid pieces 24.Above-mentioned five sections arc extinguishing districts are concatenated into whole arc extinguisher I by auxiliary contact.Simultaneously, above-mentioned auxiliary contact 13 is connected with moving contact 4 by the are-tight detection contact 87 of elasticity.In addition, the end 151 of intelligent trouble checkout gear II can be connected with striking contact 3.

Above-mentioned high back-pressure diode 30 adopts single diode or several diodes to be concatenated into one group, two ends all connect into an independently arc extinguishing unit with auxiliary contact, and standby diode is set, auxiliary contact and middle arc extinguishing grid pieces 23 are that irony and alloy mix and be provided with, and the connection of diode also can adopt rightabout connection one in mutually.

Fig. 3 is the cross section structure schematic diagram of the utility model arc extinguisher I, in Fig. 3,

coil

25,26 is on same skeleton, in wear with unshakable in one's determination 35, unshakable in one's determination 35 extend into two zones, the both sides outside ceramic arc suppressing cover 39 outside

coil

25,26, both sides outside airtight arc control device IV, simultaneously, the iron core 36 of insulation was provided with shell 34 in the coil outside before and after unshakable in one's determination 35 inboard was added with and strengthens.Be provided with acceleration iron core 38 in the both sides of auxiliary contact 12, in addition,

resistance

27,28 is arranged on the both sides of ceramic arc suppressing cover 39 and alloy arc extinguishing grid pieces 20.

Fig. 4 is the cutaway view of A-A among Fig. 3.In Fig. 4, fixed contact 2 is arranged on the bottom in first section arc extinguishing district, and fixed contact has striking contact 3, and its inside is equipped with unshakable in one's determination 46.11 of the top auxiliary contact 10 of first section arc extinguishing district interior loop 25 and coil end auxiliary contacts are parallel with alloy arc extinguishing grid pieces 17; Second section arc extinguishing district pottery arc extinguishing grid pieces 18 is in parallel with coil 26, and two ends connect auxiliary contact 11 and 12; Auxiliary contact 12 be close to coil case 34 from front end around to the back-end and 13 of auxiliary contacts be the 3rd section arc extinguishing district, comprising airtight arc control device IV and can with its parallel resistor 27,28, alloy arc extinguishing grid pieces 20 and be arranged on this section arc extinguishing district before, the arc-extinguish chamber 39 of epimere, in order to accelerate arc motion speed, installed the acceleration iron core 38 that quickens arc motion additional in auxiliary contact 12 both sides, in order to reduce the air gap, acceleration unshakable in one's determination 38 has been adopted the iron wire mutual insulating and has been joined with former 35 insulation unshakable in one's determination, quickening the higher ferro-silicon-aluminium of 38 also available resistance unshakable in one's determination makes, and near auxiliary contact 12 1 ends, the front does not add arc resistant material and directly contacts to reduce the air distance with electric arc, pad is fixed on the shell of arc control device after fastening with insulated bolt with insulation cushion again between auxiliary contact and grid sheet, and the grid sheet of auxiliary contact 15 and its front also is fixed on the arc control device shell after fastening with quadrat method with aforementioned.High back-pressure diode 30 in the 4th section arc extinguishing district arc extinguishing grid pieces 23 and grouping is arranged in parallel 13,14 of auxiliary contacts; Auxiliary contact 14 and 15 are the 5th section arc extinguishing district, are provided with arc extinguishing grid pieces 24.Between every of above-mentioned auxiliary contact 10,11 and 17 of alloy arc extinguishing grid pieces, alloy arc extinguishing grid pieces 20, auxiliary contact 13,14 and 15 and 23,24 of arc extinguishing grid pieces and 151 and auxiliary contact 10 and 16 of arc extinguishing grid pieces fill up respectively with insulation cushion again with insulated bolt and be fixed on the shell of arc control device I after fastening.High back-pressure diode 30 is positioned at the top of arc extinguishing grid pieces 23,24 and isolated by are-tight plate with it.The top fitting insulating panels of above-mentioned high back-pressure diode 30 is installed resistance 27,28 more thereon.Simultaneously, in magnetic bobbin core 35 and the outside add the iron core 36 that the iron wire with insulation porcelain glaze sintering makes, and join through insulation with magnetic bobbin core 35.

Fig. 5 is ceramic arc suppressing cover 39 structural representations among Fig. 3, in Fig. 5, is provided with ceramic arc extinguishing grid pieces 22 in the ceramic arc suppressing cover 39, and, both sides outside at its top sidewall have arc spraying mouth 41 alternately.Fig. 6 is a B-B cutaway view among Fig. 5, by ceramic as can be seen arc extinguishing grid pieces 22 among Fig. 6 be arranged in the past backward, by widely narrow down, by thick attenuation, spacing by the long shape that shortens.

Fig. 7 is the structural representation of fixed contact 2 among Fig. 3, in Fig. 7, the mains side back side of the fixed contact 2 that is used in pairs is provided with by a lead around circle or a few striking contact coils 44 that make, connect a slice electrical conductivity alloy plate 45 at coil end, weld a lead and extend back into striking contact 3 on the top of alloy conductive plate 45, the iron core 46 that the bottom welding is made up of iron plate, outer adding again, burnt the iron wire that the porcelain insulating glaze is arranged, the end of striking contact 3 can be connected with the end 151 of checkout gear II and the auxiliary contact 10 at coil top in Fig. 2, unshakable in one's determination 46 be positioned at described striking contact coil 44 inner and with its mutual insulating.Fig. 8 is a C-C cutaway view among Fig. 7, and elastic clip 47 is used for fixing two iron cores 46 of fixed contact 2.

Fig. 9 is the scheme of installation of ceramic arc-chute 18 among Fig. 3, and in Fig. 9, ceramic arc-chute 18 both sides are provided with the iron wire of insulation glaze sintering or the iron core 49 that makes with ferro-silicon-aluminium, and iron core 49 joins by insulation with 35 sides that are connected unshakable in one's determination.Figure 10 is the cutaway view of D-D among Fig. 9, and in Figure 10, ceramic arc extinguishing grid pieces 48 is set to fan-shaped and is separated with narrow groove 42.

Figure 11 is the structural representation of airtight arc control device IV.For balance coil 25,26 inside and outside ferromagnetic area and energy, make full use of the space, be provided with enclosed vacuum or fill in the rear end lower of coil 25,26 with arc control device IV as sulfur hexafluoride gas, airtight arc control device IV comprises ceramic package 69, in ceramic package 69, be provided with ceramic arc extinguishing grid pieces 51, run-on tab 52 and contact contact 50, contact one of contact 50 is with run-on tab 52 and stretch out line and be connected, another of contact contact 50 and 52 of run-on tabs leave for movable gap, connect a conducting rod 54 by outside the expansion joint 53 to airtight arc control device IV.Contact contact 50 can be arranged to dual mode: a kind of is thermojunction type, another kind of for contacting contact type: the contact contact type is connected with movable conducting rod 54 for contacting contact 50, conducting rod 54 is connected with intermediate insulation bar 58 by expansion joint 53, the two ends of intermediate insulation bar 58 are provided with sliding tray 56, the centre is provided with fixing rotation axis 57, and the two ends of intermediate insulation bar 58 are connected with conducting rod 54 and driver respectively by sliding tray 56.Among Figure 11, driver is an electromagnetic type, comprises air chamber 61 and iron 63, at air chamber 61 pore 62 is set, and described iron 63 front ends are fixed with insulating bar 67, are wound with coil 66 on the insulating bar 67, and insulating bar 67 front ends are provided with spring 68.Resistance 70 is excessive in order to prevent the coil electric power.

Figure 12 is an E-E cutaway view among Figure 11.In Figure 12, the both sides of airtight arc control device IV are iron core 35, and contact contact 50 is arranged on the bottom of airtight arc control device IV, and run-on tab 52 stretches out the outside of airtight arc control device IV.

Figure 13 is second kind of example structure schematic diagram of driver among Figure 11, and in Figure 13, driver is set to the thermal expansion rod-type, comprises fixing spring 60 and thermal expansion bar 59, and thermal expansion bar 59 is connected with intermediate insulation bar 58.

Figure 31 is the third example structure schematic diagram of driver among Figure 11, in Figure 31, driver is set to the thermal expansion tubular type, comprise that thermal expansion pipe 71 is provided with expansion joint 72, in thermal resistance 73 is arranged, the following tube wall of thermal expansion pipe 71 burns and ceramic glaze is arranged and fill small amount of liquid 74, and its amount only satisfies thermal expansion amount and can not explode.

Several airtight arc control device IV also can be set in addition, or vacuum, sulphur hexafluoride mix and use, and the position also can suitably move forward, in order to prevent to contact contact 50 loose contacts, the tie point of

resistance

27,28 can be moved forward to alloy Gate sheet 20 preceding several and join with it, to improve transfer voltage.The outside transmission of airtight arc control device IV and driving element are fixed on outside extended spot and the vacant place of airtight arc control device IV, and then overall fixed is at unshakable in one's determination 35 vacant place.When several airtight arc control device IV are set, should disconnect the last front that disconnects again earlier, can reduce the capacity of diode like this, even cancellation.

Figure 14 is the structural representation of moving contact 4 among Fig. 1.In Figure 14, the coil 80 of welding one circle or part circle on the moving contact 4, weld with high-resistance material 76 at some places between coil 80 and the moving contact 4, and walk around moving contact 4 place's pads with 75 connections of insulation cushion 78 usefulness conductive plates at it, and conductive plate 75 is fixed on the moving contact 4 by bolt 79.

Figure 15 is first kind of example structure schematic diagram of alloy Gate sheet 20 among Fig. 3, and Figure 17 is second kind of example structure schematic diagram of alloy arc extinguishing grid pieces 20 among Fig. 3, and Figure 16 and Figure 18 are respectively the left view of two width of cloth figure.In Figure 15 and Figure 17, the alloy arc extinguishing grid pieces 20 in the 3rd section arc extinguishing district punching press respectively has rightabout ledge 81 and 82.Two kinds of grid sheets are alternate when combination, and to add insulation cushion superimposed, uses insulated bolt fastening again.

Figure 19 is

auxiliary contact

13,14 structural representations among Fig. 3, and sintering has insulation enamel 83 near the two ends fastening bolt of

auxiliary contact

13,14.

Figure 20 is arc extinguishing grid pieces 23 and 24 a structural representation among Fig. 3, sintering has insulation enamel 85 near the fastening bolt of the two ends of arc extinguishing grid pieces 23, and, be used for increasing dielectric strength to bear high counter voltage having insulation enamel 85 and 23 of arc extinguishing grid pieces to be provided with narrow groove 86.

Figure 21 is the another kind of example structure schematic diagram of auxiliary contact 13, and Figure 22 is a F-F cutaway view among Figure 21.When auxiliary contact 13 is used as detection contact, respectively weld two steel wires 88 in elongated end both sides, the bottom of auxiliary contact 13, respectively weld two detection contact 87 before the steel wire 88.

Figure 23 is the structural representation of detection contact device 89, Figure 24 be among Figure 23 G to diagrammatic sketch.When auxiliary contact 13 as detection contact during promptly as common auxiliary contact, this is in order not influence the arc extinguishing speed in when tripping operation, two identical detection contact devices 89 that insulate fully with other loop can be installed in both sides near the auxiliary contact 13 of the bottom of airtight arc control device IV, detection contact device 89 comprises insulating cylinder 90, detection contact 91 and lead 93, is provided with spring 92 in insulating cylinder 90.

Figure 25 is the circuit theory schematic diagram of intelligent trouble checkout gear II.In Figure 25, ceramic box 104 inside are equipped with discharging gap 95, irony arc-chute 103 and ceramic arc-chute 99, are parallel with rightabout diode 100 and thermistor 101 on irony arc-chute 103.Discharging gap 95 is in series with temperature-sensitive or thermo-sensitive resistor 96 then with in parallel with high resistant resistance 98 again after blowout coil 97 is connected.Two external parts of this intelligent trouble checkout gear II are respectively 151 and 152.

Figure 26 is ceramic box 104 and the grid sheet circuit connection diagram of intelligent trouble checkout gear II among Figure 25.In Figure 26, diode 100 is arranged at the outside of ceramic box 104, and discharging gap 95 is positioned at the bottom of ceramic box 104 and is connected with diode 100 by run-on tab 102.Figure 27 is the H-H cutaway view of Figure 26, and discharging gap 95 is positioned at the bottom of ceramic box 104.

Figure 28 is the structural representation in the insulator among Fig. 1, in Figure 28, isolating switch power side lead-in wire 5 is provided with idiostatic current transformer 6, the secondary circuit of current transformer 6 is divided into two groups of

luminous tubes

116 and 117 by supporting insulator inside, with optical fiber 115 signal is reached the interior fault identification device III of switching mechanism case 7 again.

Figure 29 is insure a kind of example structure schematic diagram of a tool of moving contact 4 among Fig. 1, be when the time as on-load switch, on moving contact 4, be fixed with insulating bar 105 and fuse fixed contact 107, the cartridge fuse 106 that fuse moving contact 108 connects be arranged on buckling on the insulating

bar

105 and 109 join.

Figure 30 is intelligent trouble identification device III circuit theory diagrams among Fig. 1, in Figure 30, intelligent trouble identification device III circuit comprises luminous tube 116,117, optical fiber 115, trip(ping) circuit V and closing circuit VI, and trip(ping) circuit V is linked in sequence by photosensitive tube 118, adjustable resistance 123, monostable clocked flip-flop 124, triode 125, piezo-resistance 127, triode 126 and breaking coil 129 and forms; Closing circuit VI is made up of photosensitive tube 119, adjustable resistance 122, monostable clocked flip-flop 135, triode 133, small resistor 131 and travel switch contact 137, piezo-resistance 136, triode 134, small resistor 132 and closing coil 130.

Below the arc extinguishing of the utility model electronic electromagnetic intelligent switch and the operation principle and the process of intelligent function are described in further detail.

The operation principle of arc extinguishing and process are as follows in this programme: when switch closure, moving contact 4 closely contacts with fixed contact 2, make circuit connect normal operation, this moment, arc extinguisher I was in the disconnection idle condition, when switch disconnects load current or fault current, moving contact 4 breaks away from fixed contact 2 earlier, when moving contact 4 breaks away from striking contact 3, under magneticaction, electric arc upwards is pushed into striking contact 3 ends rapidly, moving contact 4 is because of also making to have coil simultaneously, so electric arc is also pushed its top and motion backward immediately to, along with moving contact 4 moves away from making arc transfer to auxiliary contact 11, coil 25 is very fast to make coil produce magnetic force on every side by electric current; Less because of magnetic force when disconnecting load current, electric arc can not march to striking contact 3 ends rapidly, but arrive earlier auxiliary contact 11, when arc motion during to auxiliary contact 12, coil 26 energisings make electric arc to the 3 terminal motions of striking contact and make coil 25 energisings produce magnetic force under its magneticaction.After this arc motion is identical with the fault current motion mode, even in fact after this also can extinguished fully by diode without the 3rd section arc extinguishing district electric arc for little electric current electric arc.Moving contact 4 continue motion away from, electric arc is transferred to rapidly on auxiliary contact 12 and 13, auxiliary contact 12 and 13 electric arcs mainly quicken under unshakable in one's determination 38 magneticactions of strengthening in magnetic force and auxiliary contact 12 both sides that coil 25 produces, make electric arc push ahead and in ceramic arc suppressing cover 39, advance and the grid sheet top that arrives simultaneously along coil case 34 rapidly under the guiding of auxiliary contact 12, arc spraying mouth 41 ejections in both sides, grid sheet top, and electric arc blown out many sections, along with inwardly advancing arc current, reduces on electric arc, magnetic force weakens, but under the effect of the acceleration iron core 38 of auxiliary contact 12 both sides, make electric arc continue to keep high-speed motion to last along auxiliary contact 12, and by airtight arc control device IV and thermal expansion bar 59 or electromagnet, contact 50 in the confined chamber is opened under the promotion of magnetic force and under the effect of ceramic grid sheet 51, arc current is transferred in the resistance 27 along run-on tab 52, because what the rear end installed additional is alloy arc-chute 20, so under magneticaction, electric arc is kept in motion on the grid sheet all the time, and motion round about, add the effect of ceramic grid sheet 22, and because resistance 28 is positive temperature coefficient, initial value is very little, thereby make in the interval, coil 26 two ends, and 12 to 13 electric arcs of auxiliary contact extinguish rapidly, thereby make arc current after leaving fixed contact 2, first half-wave or shorter time can extinguish, and arc current is transferred to resistance 27 simultaneously, 28 and protective tube 29 circuit in.When auxiliary contact 13 is left in moving contact 4 continuation motions, electric arc moves up to 14 under the effect of magnetic field and iron plate, behind electric current process resistance 27 and 28, arc current promptly reduces to rapidly and is no more than the diode permissible value, as arc current direction and high back-pressure diode 30 conducting directions not simultaneously, electric arc can not extinguish, then electric arc enters in the auxiliary contact 15, along with moving contact 4 continues to move to diode current flow when identical with high inverse-voltage tube diode 30 conducting directions, arc current enters diode, arc extinction in the diode two ends, and arc current still continues in auxiliary contact 14 to 15, when moving contact 4 continue away from the time arc current backward diode by, this moment, the diode reverse electric current produced arc drop through on the iron plate, added air-pressure drop, had reduced the voltage that diode bears, so electric arc extinguishes very soon, whole arc extinguishing process is also promptly finished.When diode damaged, fuse failures in the protective tube 29 and disconnect electric arc played the backup protection effect.

When switch closure, present all switches can not have been predicted that all fault-free exists and to the fault combined floodgate, cause damages such as causing equipment when overlapping for the second time in switch fault disconnection back especially.The utility model intelligent switch is provided with intelligent apparatus for this reason, and comprising failure detector II and fault identification device III two parts, its fault detect II operation principle and process are as follows:

When switch begins closure, slower in order to alleviate to the impact closing speed of detection contact, in making process, when elastomeric check contact 87 that has when moving contact 4 and auxiliary contact 13 or special-purpose detection contact 91 contact, circuit is promptly connected with failure detector circuit: when using elastomeric check contact 87, the contact 151 of failure detector II is connected with striking contact 3, and contact 152 is connected with contact 153 or 154, and this moment, arc extinguishing grid pieces 16 played arc extinguishing and two effects of insulation; When using special-purpose detection contact 91, the contact 152 of failure detector II is connected with detection contact 91, and contact 151 links together with striking contact 3,10 3 of auxiliary contacts, and this moment, discharging gap 95 discharge voltages were adjusted near the voltage peak.When voltage is near peaking, discharging gap 95 discharges, when electric current is by temperature-sensitive or thermo-sensitive resistor 96 simultaneously, the very fast immediately increasing of resistance, the strong magnetic force of blowout coil 97 energising generations simultaneously makes electric arc blow to ceramic arc extinguishing grid pieces 99 the rapid minimizing of electric current is entered iron railings sheet 103 and thermistor 96 then, in case the excessive diode that enters of initial current, be connected to the different high back-pressure diode 100 of direction between the iron railings sheet, when arc current is identical with wherein diode current flow direction, electric arc enters diode, this interval arc extinction, then voltage also reduces by 95 arc extinctions of discharging gap when current over-zero along with crossing behind the peak value, so the discharge pulse time is very short, it is also very fast that electric current reduces, if electric arc is little of then cancelling diode when the horizontal blanking when current over-zero.

Fault differentiates that III operation principle and process are as follows: switch return action electric current by adjustable resistance 122 adjust greater than crest voltage divided by load current the resistance value when maximum, add the initial resistance 96 of temperature sensitive resistance or the electric current of the resistance gained of resistance 28 in addition, the current value that multiply by COEFFICIENT K again and determined.Little electric capacity the 120, the 121st prevents interference maloperation.When there is fault in circuit, electric current is promptly greater than the device action value, in failure detector II action, current transformer 6 secondary luminous tubes are luminous to reach intelligent trouble identification device III in the switching mechanism by optical fiber 115 with signal, luminous tube 116 triggers conducting tripping operation triode 125 tripping operations again of monostable clocked flip-flop 124 again by optical fiber 115 and photosensitive tube 118 after the adjustable resistance definite value is differentiated signal, because of trip(ping) circuit does not have time delay process for high speed, and closing speed is slower because of the beginning closing speed, just guarantee before moving contact 4 does not move to the permission distance of fixed contact 2, switch is tripping at once, thereby prevented that the switch heavy current impact from closing a floodgate on fault, the tripping operation process can be finished in less than two half-waves.Because the monostable timing of closing circuit triggers Current Transformer measurement loop luminous tube 117 and triggers, time is determined accurately easily, as in setting-up time, when switch does not reach the tripping operation operating value, at this moment monostable clocked flip-flop 135 actions of closing circuit, trigger combined floodgate triode 133 short circuit combined floodgate small resistors 131 and strengthen switching current, make the afterburning combined floodgate of switch, when moving contact advances to the voltage peak arcing distance, as still have fault, moving, the fault current discharge is promptly arranged between fixed contact, at this moment luminous tube promptly sends trip signal, presser sensor resistance 127 also reduces turn-on transistor 125 because of abrupt pressure strengthens resistance, 126, make breaking coil 129 energising tripping operations simultaneously, moving, in the fixed contact discharge process, because of moving, all be provided with coil on the fixed contact, so electric arc rapidly forwards, backwards both sides push open, carry out the arc extinguishing process immediately, therefore the contact burn is lighter, system shock is reduced, arc extinguishing process and tripping operation speed have also been accelerated, this seems particularly important to high-voltage switch more because of arcing distance length, at this moment as there not being fault, moving, discharging current is less between fixed contact, luminous tube can not send trip signal, also do not have big electrodynamic repulsion force and make presser sensor resistance send trip signal, at this moment stroke auxiliary switch 137 and piezo-resistance 136 are arranged on afterburning position, switch can be once more by stroke auxiliary switch 137 and presser sensor resistance 136 turn-on transistors 134 short circuit resistance 132 once more reinforcing finish combined floodgate at last, because of the tripping operation action is fast than feed motion, so do not influence the carrying out of trip signal this moment.

Claims

1. electronic electromagnetic intelligent switch, comprise isolating switch, it is characterized in that: on mains side fixed contact (2) base of isolating switch, arc-control device (I) is installed, this device is composed in series by five sections arc extinguishing districts: first section arc extinguishing district is connected to blowout coil (25) and alloy arc extinguishing grid pieces (17) in parallel, the end of blowout coil (25) is connected to auxiliary contact (11), and the auxiliary contact of initiating terminal (10) is connected with striking contact (3) on the fixed contact (2); Second section arc extinguishing district is arranged between auxiliary contact (11) and (12), be connected to coil (26) and ceramic arc-chute (18) in parallel, auxiliary contact (12) be close to coil case (34) from front end around to the rear end, above-mentioned two sections arc extinguishing districts are arranged at the below of blowout coil (25), (26), blowout coil (25), (26) are on same skeleton, in wear with unshakable in one's determination (35), (35) two ends unshakable in one's determination outwards are extended into two zones, are close to ceramic arc suppressing cover (39) and airtight arc control device IV both sides; The 3rd section arc extinguishing district is arranged between auxiliary contact (12) and (13), wherein comprise blowout coil (25), (26) before, on, the rear, blowout coil (25), (26) before, the top is provided with ceramic arc suppressing cover (39), on it, the rear is provided with alloy arc-chute (20), be provided with airtight arc control device IV in the wings, be provided with contact in the airtight arc control device IV, two ends are in parallel with resistance (27), pottery arc-chute (22) and alloy arc-chute (20) be connected in series mutually again be serially connected resistance (28), protective tube (29) parallel connection, above-mentioned two parallel circuitss are serially connected again; The 4th section arc extinguishing district is arranged between auxiliary contact (13) and auxiliary contact (14), and the high back-pressure diode (30) of arc extinguishing grid pieces (23) in parallel and grouping is set; The 5th section arc extinguishing district is arranged between auxiliary contact (14) and (15), and arc extinguishing grid pieces (24) is set.

2. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: be provided with ceramic grid sheet (22) in the ceramic arc suppressing cover (39) in described the 3rd section arc extinguishing district, the shape of described ceramic grid sheet (22) is arranged to be narrowed down, shortened by long by thick attenuation, spacing by wide backward in the past, and the both sides, top of described ceramic arc suppressing cover (39) have arc spraying mouth (41) alternately.

3. electronic electromagnetic intelligent switch according to claim 1 is characterized in that: described iron core (35) inboard adds the insulation iron core made from the iron wire of insulation porcelain glaze sintering (36), and described insulation (36) unshakable in one's determination is joined through insulation with (35) unshakable in one's determination.

4. electronic electromagnetic intelligent switch according to claim 1 is characterized in that: in described auxiliary contact (12) both sides the acceleration iron core made from the iron wire of insulation porcelain glaze sintering (38) is set, described acceleration (38) unshakable in one's determination is joined through insulation with (35) unshakable in one's determination.

5. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: be provided with by a lead around circle or a few striking contact coils (44) that make at the mains side back side of described fixed contact (2), at the terminal a slice electrical conductivity alloy plate (45) that connects of coil (44), weld a lead and extend back into striking contact (3) on the top of alloy conductive plate (45), the iron core (46) that the bottom welding is made up of iron plate, the end of striking contact (3) is connected with the end (151) of checkout gear II and the auxiliary contact (10) at coil top, described iron core (46) be positioned at described striking contact coil (44) inner and with its mutual insulating, two outsides unshakable in one's determination of fixed contact (2) fix with elastic clip (47).

6. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: the coil (80) that is welded with a circle or part circle on the moving contact of described isolating switch (4), weld with high-resistance material (76) at some places between coil (80) and the moving contact (4), and walk around moving contact (4) at it and locate pad with insulation cushion (78) conductive plate (75) connection, conductive plate (75) is fixed on the moving contact (4) by bolt (79).

7. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: be provided with in ceramic arc-chute (18) both sides with the iron wire of insulation glaze sintering or the iron core (49) that makes with ferro-silicon-aluminium, (49) unshakable in one's determination join by insulation with the side that (35) unshakable in one's determination are connected; Ceramic arc extinguishing grid pieces (48) in the described ceramic arc-chute (18) is set to fan-shaped and is separated with narrow groove (42).

8. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: the single grid sheet of the alloy arc-chute (20) in described the 3rd section arc extinguishing district is provided with has rightabout ledge (81) and (82), and pad is alternate superimposed to insulate between two kinds of grid sheets, uses insulated bolt fastening again.

9. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: described coil (25), (26) rear end lower is provided with enclosed vacuum or fills arc control device (IV) with sulfur hexafluoride gas, described airtight arc control device IV comprises ceramic package (69), ceramic arc extinguishing grid pieces (51) is set in ceramic package (69), run-on tab (52) and contact contact (50), one of described contact contact (50) is with run-on tab (52) and stretch out line and be connected, leave for movable gap between another of contact contact (50) and run-on tab (52), connect a conducting rod (54) again and arrive outside the airtight arc control device (IV) by expansion joint (53).

10. electronic electromagnetic intelligent switch according to claim 9 is characterized in that: described contact contact (50) is a thermojunction type.

11. electronic electromagnetic intelligent switch according to claim 9, it is characterized in that: described contact contact (50) is for to be connected described contact contact (50) with movable conducting rod 54, conducting rod (54) is connected with intermediate insulation bar (58) by expansion joint (53), the two ends of intermediate insulation bar (58) are provided with sliding tray (56), the centre is provided with fixing rotation axis (57), and the two ends of intermediate insulation bar (58) are connected with conducting rod (54) and driver respectively by sliding tray (56).

12. according to the described electronic electromagnetic intelligent switch of claim (11), it is characterized in that: described driver is an electromagnetic type, comprise air chamber (61) and iron (63), pore (62) is set in air chamber (61), described iron (63) front end is fixed with insulating bar (67), be wound with coil (66) on the insulating bar (67), insulating bar (67) front end is provided with spring (68).

13. electronic electromagnetic intelligent switch according to claim 11 is characterized in that: described driver is the thermal expansion rod-type, comprises fixing spring (60) and thermal expansion bar (59).

14. electronic electromagnetic intelligent switch according to claim 11 is characterized in that: described driver is the thermal expansion tubular type, comprises thermal expansion pipe (71), expansion joint (72), reaches resistance wire (73), is filled with liquid (74) in the described thermal expansion pipe (71).

15. electronic electromagnetic intelligent switch according to claim 1 is characterized in that: be provided with insulation enamel (85) and narrow groove (86) in described the 4th section, the 5th section arc extinguishing district near the two ends fastening bolt of arc extinguishing grid pieces (23).

16. electronic electromagnetic intelligent switch according to claim 1 is characterized in that: be provided with insulation enamel (83) in described the 4th section, the 5th section arc extinguishing district near the two ends fastening bolt of auxiliary contact (13), (14).

17. according to claim 1 or 16 described electronic electromagnetic intelligent switch, it is characterized in that: the detection contact device (89) that matches and use with described auxiliary contact (13) also is set, detection contact device (89) comprises insulating cylinder (90), detection contact (91) and lead (93), is provided with spring (92) in insulating cylinder (90).

18. according to claim 1 or 16 described electronic electromagnetic intelligent switch, it is characterized in that: described auxiliary contact (13) bottom is provided with the are-tight detection contact of elasticity (87), the are-tight detection contact of elasticity (87) is respectively to weld two steel wires (88) in auxiliary contact (13) both sides, and steel wire (88) is preceding respectively to weld two detection contact.

19. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: high back-pressure diode (30) is set to one or several diodes and is concatenated into one group in described the 4th section arc extinguishing district, the two ends of each grouping all connect into an independently arc extinguishing unit with corresponding auxiliary contact, and standby diode is set.

20. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: intelligent apparatus also is set, and this device comprises being arranged on the failure detector II on the arc-control device (I) and being arranged on the interior fault identification device III two parts of switching mechanism case (7) and forms; Simultaneously, isolating switch power side lead-in wire (5) is provided with idiostatic current transformer (6), and the secondary circuit of current transformer (6) is divided into two groups and with optical fiber (115) signal is reached the interior fault identification device (III) of switching mechanism case (7) by luminous tube (116) and (117) that are arranged on supporting insulator inside.

21. electronic electromagnetic intelligent switch according to claim 20, it is characterized in that: described failure detector (II) comprises ceramic box (104) and is fixed on the piezo-resistance at the push rod unshakable in one's determination place of closing a floodgate, discharging gap (95) is set in the described ceramic box (104), run-on tab (102), irony arc-chute (103) and ceramic arc-chute (99), be parallel with rightabout diode (100) and thermistor (101) on the described irony arc-chute (103), described discharging gap (95) is connected with blowout coil (97), in parallel with high resistant resistance (98) again, be in series with temperature-sensitive or thermo-sensitive resistor (96) then.

22. electronic electromagnetic intelligent switch according to claim 20, it is characterized in that: described fault identification device III comprises luminous tube (116), (117), optical fiber (115), trip(ping) circuit (V) and closing circuit (VI), and described trip(ping) circuit V is linked in sequence by photosensitive tube (118), adjustable resistance (123), monostable clocked flip-flop (124), triode (125), piezo-resistance (127), triode (126) and breaking coil (129) and forms; Described closing circuit (VI) is made up of photosensitive tube (119), adjustable resistance (122), monostable clocked flip-flop (135), triode (133), small resistor (131) and travel switch contact (137), piezo-resistance (136), triode (134), small resistor (132).

23. electronic electromagnetic intelligent switch according to claim 1, it is characterized in that: be fixed with insulating bar (105) and fuse fixed contact (107) on the moving contact of described isolating switch (4), the cartridge fuse (106) that fuse moving contact (108) connects joins with buckle (109) that are arranged on the described insulating bar (105).