CN201402917Y - Mining flameproof and intrinsic safety type high-pressure vacuum electromagnetic starter - Google Patents
Mining flameproof and intrinsic safety type high-pressure vacuum electromagnetic starter Download PDFInfo
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- CN201402917Y CN201402917Y CN2009200899854U CN200920089985U CN201402917Y CN 201402917 Y CN201402917 Y CN 201402917Y CN 2009200899854 U CN2009200899854 U CN 2009200899854U CN 200920089985 U CN200920089985 U CN 200920089985U CN 201402917 Y CN201402917 Y CN 201402917Y
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Abstract
The utility model relates to a mining flameproof and intrinsic safety type high-voltage vacuum electromagnetic starter used in a coal mine. A switch housing is divided into a connecting line cavity and a main cavity, a cable entry device is arranged in the connecting line cavity, four incoming and outgoing line bell mouths are formed at the lower part of the connecting line cavity, and a zero sequence current transformer and a connecting line cavity current transformer are mounted in the connecting line cavity; and a high-voltage vacuum contactor, a three-phase voltage transformer, a main cavity current transformer, a piezoresistor, an insulating bolt moving contact and a high-voltage integrated protection device are mounted in the main cavity, a switch door cover is arranged on the left side of the main cavity, the connecting line cavity and the main cavity are arranged on a base, the high-voltage integrated protection device and a display are fixed on the inner side of the switch door cover, and a button and a display window are arranged on the switch door cover. The utility model solves the problem of main protection in case of short circuit failure of a high-voltage electric motor stand-alone exceeding 2 MW in an underground coal mine, has the protection functions in case of overload, leakage of electricity, undervoltage, overvoltage and lock between air and electricity, and has an intrinsic safety communication interface to realize the four-remote function.
Description
Technical field
The utility model relates to a kind of high-voltage switch gear, the mine explosion-suppression and intrinsic safety type high pressure vacuum electromagnetic starter that particularly a kind of colliery is used.
Background technology
Along with the increasing of the coal mining degree of depth, some pit mining well depth surpasses km, and this is just to draining, and the Electric Traction equipment of systems such as transportation has proposed new requirement, and the power requirement of part high-tension motor has surpassed 2MW." relaying protection of electric device and automatics design specification " GB50062-92 9.0.2 bar regulation is installed longitudinal differential protection as the main protection of motor short circuit fault to 2MW and above motor.For a long time; no matter flame-proof mine high pressure vacuum electromagnetic starter is with simulation; still numeral is as main control unit; its short trouble all with current quick-breaking as main protection; to the high-tension motor of down-hole power above 2MW, its short trouble protection can not be satisfied GB50062-92 9.0.2 bar regulation.In addition; longitudinal differential protection is widely used in the middle of the relaying protection of ground electrical power device; because particular surroundings under the coal mine and the restriction of flame-proof mine high pressure vacuum electromagnetic starter structure at present, longitudinal differential protection is not applied in the down-hole high pressure motor protection.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that exists among the prior art and a kind of practical application of both having satisfied is provided; the mine explosion-suppression and intrinsic safety type high pressure vacuum electromagnetic starter that requires of compliant again; the high-tension motor unit surpasses the problem of the short trouble main protection of 2MW under the solution coal mine; have overload, electric leakage, decompression, overvoltage and lock between air and electricity defencive function simultaneously; with the intrinsic safety communication interface, realize " four is distant " function.
In order to address the above problem, the technical scheme that the utility model adopted is achieved in that and comprises switch housing, it is characterized in that: switch housing is divided into two chambeies, right-hand is wire connection cavity, cable entry is arranged in wire connection cavity, below wire connection cavity, be provided with the output interface, lock between air and electricity contact lead-out wire interface, the gas shutting contact that are respectively applied for connection and introduce four turnover line horn mouths of interface, far and near control introducing interface, zero sequence current mutual inductor and wire connection cavity current transformer also are installed in wire connection cavity simultaneously; Left is main chamber; high-pressure vacuum contactor, three phase potential transformer, main cavity current instrument transformer, piezo-resistance, isolation latch moving contact and high pressure comprehensive protection device are equipped with in inside; the left side in main chamber is the switch door closure; wire connection cavity and main chamber place on the base; high pressure comprehensive protection device and display are fixed on switch door closure inboard, and the switch door closure is provided with the real-time demonstration of button and the various parameters that are used for observation display and understands the display window of on off state.
The display window that is arranged on the switch door closure in main chamber is the display window of two circles, and the switch door closure is provided with seven buttons.
Be integrated with the selective earth leakage protection circuit in the high pressure comprehensive protection device, longitudinal differential, short circuit, overload protecting circuit, the lock between air and electricity circuit, gas latch circuit, overvoltage, under-voltage circuit, demonstration and branch, contacting controling circuit, three phase mains forms asterism through the wire connection cavity current transformer, wire connection cavity current transformer and main cavity current instrument transformer link to each other with longitudinal differential, overload protection in the high pressure comprehensive protection device, and zero sequence current mutual inductor links to each other with leakage protection circuit in the high pressure comprehensive protection device; The three phase mains bus is powered to three phase potential transformer; the three phase potential transformer out-put supply is to the high pressure comprehensive protection device; be connected with the lock between air and electricity circuit and the gas latch circuit of contact with the high pressure comprehensive protection device; the lock between air and electricity circuit links to each other with external sensor by turnover line horn mouth with gas latch circuit contact line; display links to each other with the high pressure comprehensive protection device; function button links to each other with the high pressure comprehensive protection device; three phase potential transformer directly links to each other with the three phase mains bus; when isolating latch moving contact closure; three phase potential transformer gets; three phase potential transformer is output as the high pressure comprehensive protection device power supply is provided; in the high pressure comprehensive protection device power circuit is arranged; handle the back to demonstration; communication; gather; output provides power supply; the high pressure comprehensive protection device get electric after; simulate electric leakage by push-botton operation; the overcurrent test, display shows the corresponding protection state.
Main chamber is a cuboid cavity, and the model of high pressure comprehensive protection device is KLBH-Q.
The utlity model has following good effect:
1, the utility model adopts longitudinal differential to solve the above motor short circuit fault of 2MW main protection problem under the coal mine.
2, the utility model wire connection cavity design has solved longitudinal differential protection main electrical scheme problem.
Description of drawings
Fig. 1 is the right view of the utility model embodiment.
Fig. 2 is the front view of the utility model embodiment.
Fig. 3 is the electrical schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in more detail, sees Fig. 1, Fig. 2, Fig. 3.
A kind of mine explosion-suppression and intrinsic safety type high pressure vacuum electromagnetic starter, comprise switch housing, it is characterized in that: switch housing is divided into two chambeies, right-hand is wire connection cavity 1, cable entry 2 is arranged in wire connection cavity 1, below wire connection cavity 1, be provided with the output interface, lock between air and electricity contact lead-out wire interface, the gas shutting contact that are respectively applied for connection and introduce four turnover line horn mouths 3 of interface, far and near control introducing interface, zero sequence current mutual inductor 12 and wire connection cavity current transformer 14 also are installed in wire connection cavity 1 simultaneously; Left is main chamber 4; inside is equipped with high-pressure vacuum contactor 10, three phase potential transformer 15, main cavity current instrument transformer 11, piezo-resistance 16, is isolated latch moving contact 9 and high pressure comprehensive protection device 17; the left side in main chamber 4 is a switch door closure 5; wire connection cavity 1 and main chamber 4 place on the base 8; high pressure comprehensive protection device 17 and display 20 are fixed on switch door closure 5 inboards, and switch door closure 5 is provided with the real-time demonstration of button 7 and the various parameters that are used for observation display 20 and understands the display window 6 of on off state.
The display window 6 that is arranged on the switch door closure 5 in main chamber 4 is the display window 6 of two circles, and switch door closure 5 is provided with seven buttons 7.
Be integrated with the selective earth leakage protection circuit in the high pressure comprehensive protection device 17, longitudinal differential, short circuit, overload protecting circuit, lock between air and electricity circuit 19, gas latch circuit 21, overvoltage, under-voltage protecting circuit, demonstration and branch, contacting controling circuit, three phase mains bus X1, X2, X3 form asterism through wire connection cavity current transformer 14, wire connection cavity current transformer 14 and main cavity current instrument transformer 11 link to each other with longitudinal differential, overload protection in the high pressure comprehensive protection device 17, and zero sequence current mutual inductor 12 links to each other with high pressure comprehensive protection device 17 interior leakage protection circuits; Three phase mains gives three phase potential transformer 15 power supplies; three phase potential transformer 15 out-put supplies are to high pressure comprehensive protection device 17; be connected with the lock between air and electricity circuit 19 and the gas latch circuit 21 of contact with high pressure comprehensive protection device 17; lock between air and electricity circuit 19 links to each other with external sensor by turnover line horn mouth 3 with gas latch circuit 21 contact lines; display 20 links to each other with high pressure comprehensive protection device 17; function button 22 links to each other with high pressure comprehensive protection device 17; three phase potential transformer 15 and three phase mains bus X1; X2; X3 directly links to each other; when isolating latch moving contact 9 closures; three phase potential transformer 15; three phase potential transformer 15 is output as high pressure comprehensive protection device 17 power supply is provided; in the high pressure comprehensive protection device 17 power circuit is arranged; handle the back to demonstration; communication; gather; output provides power supply; high pressure comprehensive protection device 17 electric after; simulate electric leakage by button 7 operations; the overcurrent test, display 20 shows the corresponding protection state.
Main chamber 4 is cuboid cavitys, and the model of high pressure comprehensive protection device 17 is KLBH-Q.
Three phase mains X1, X2, X3 form asterism through bus-type punching current transformer 14, longitudinal differential circuit, overload protecting circuit in bus-type punching current transformer 14 summation current transformers 11 and the high pressure comprehensive protection device 17 link to each other, and zero sequence current mutual inductor 12 links to each other with high pressure comprehensive protection device 17 interior leakage protection circuits; Three phase mains gives three phase potential transformer 15 power supplies, and three phase potential transformer 15 out-put supplies are to high pressure comprehensive protection device 17, with high pressure comprehensive protection device 17
Be connected with contactLock between air and electricity circuit 19 and gas latch circuit 21, wind-powered electricity generation links to each other with external sensor by horn mouth with gas shutting contact line, examines display 20 and links to each other with high pressure comprehensive protection device 17, and button 7 links to each other with high pressure comprehensive protection device 17; Three phase potential transformer 15 directly links to each other with bus X1, X2, X3, and when isolating latch 9 closures, three phase potential transformer 15 gets electric, and three phase potential transformer 15 is output as high pressure comprehensive protection device 17 power supply is provided; In the high pressure comprehensive protection device 17 power circuit is arranged, handles the back and provide power supply to demonstration, communication, collection, output circuit, high pressure comprehensive protection device 17 electric after, simulate electric leakage, overcurrent test by button 7 operations, display 20 demonstration corresponding protection states.
Mine flameproof and intrinsic safety type high pressure vacuum electromagnetic starter, see Fig. 1, on profile, mainly be divided into two chambeies, right-hand is wire connection cavity 1, and cable entry 2 is arranged in the wire connection cavity 1, and four horn mouths 3 are arranged below wire connection cavity 1, be respectively applied for the output interface of connection, lock between air and electricity contact lead-out wire interface, the gas shutting contact is introduced interface, and interface is introduced in far and near control.Zero sequence current mutual inductor 12 summation current transformers 11 also are installed simultaneously.Fig. 1 left side is the main chamber of mine flameproof and intrinsic safety type high pressure vacuum electromagnetic starter, is a cuboid cavity, and internal structure as shown in Figure 3.High-pressure vacuum contactor 10 is equipped with in inside, three phase potential transformer 15, and bus-type punching current transformer 14, piezo-resistance 16, isolating latch moving contact 9 and model is the protector 17 of KLBH-Q.The left side in main chamber 4 is a switch door closure 5, sees Fig. 2 for details, and button 7 is arranged, display window 6, and main chamber 1 places on the base 8, and protector 17 and display 20 are fixed on door closure 5 inboards.As shown in Figure 2, the display window 6 of two circles is arranged on the switch door closure 5 in main chamber 4, be used for the real-time demonstration of the various parameters of observation display 20, understand on off state.Seven buttons 7 are arranged on the door closure, and function is respectively separating brake, combined floodgate etc., is used for starter and send adjusting, testing of electricity, power failure operation and various operational factors.
The electrical schematic diagram of mine flameproof and intrinsic safety type high pressure vacuum electromagnetic starter; as shown in Figure 3; be integrated with the selective earth leakage protection electric furnace in the protector 17; longitudinal differential, short circuit, overload protecting circuit; overvoltage, under-voltage, wind-powered electricity generation, gas, exclusive circuit, demonstration and branch, contacting controling circuit.Three phase mains X1, X2, X3 form asterism through current transformer 14.Current transformer 14 links to each other with longitudinal differential, overload protection in the protector with 11, and zero sequence current mutual inductor 12 links to each other with selective earth leakage protection in the protector; Three phase mains gives transformer 15 power supplies; transformer 15 out-put supplies are to protector 17; be connected with the lock between air and electricity circuit 19 and the gas latch circuit 21 of contact with protector 17; wind-powered electricity generation links to each other with external sensor by horn mouth with gas shutting contact line; display 20 links to each other with protector 17, and function button 22 links to each other with protector 17.Three-phase transformer 15 directly links to each other with bus X1, X2, X3, and when isolating latch 9 closures, three-phase transformer 15 gets electric, and three-phase transformer 15 is output as protector 17 power supply is provided.In the protector 17 power circuit is arranged, handles the back and provide power supply to demonstration, communication, collection, output, protector get electric after, by button 7 operations can simulate electric leakage, overcurrent is tested.Display 20 can show the corresponding protection state.
The design of mine flameproof and intrinsic safety type high pressure vacuum electromagnetic starter selective earth leakage protection is to gather zero sequence current signal by zero sequence current mutual inductor 12; the residual voltage that collects with protector 17 compares; the residual voltage of fault branch and zero-sequence current same-phase; non-fault branch is anti-phase, realizes selectivity.Simultaneously in order to improve the accuracy of residual voltage and zero-sequence current phase place, increased the active phase shift of phase place in design, adjustable amplifying circuit makes the more accurate of phase place.
As shown in Figure 3; being connected with one group with protector 17 often opens or the lock between air and electricity circuit 19 of normally closed contact; the outside is selected Chang Kai or normally closed by protector 17 settings for use; the lock between air and electricity contact links to each other with external sensor by horn mouth; when external sensor disconnects normally closed contact or closed normal opened contact owing to fault trip; this mine flameproof and intrinsic safety type high pressure vacuum electromagnetic starter will be made the corresponding protection measure, show corresponding fault by display 20.
Be equiped with high-pressure vacuum contactor in the enclosure, voltage transformer, current transformer, zero sequence current mutual inductor, piezo-resistance, display module and comprehensive protection device.Comprehensive protection device has longitudinal differential, overload protecting circuit, leakage protection circuit, overvoltage, under-voltage protecting circuit, breaker tripping and closing control circuit, wind-powered electricity generation protective circuit and intrinsic safety communication interface circuit.Three phase mains connects high-pressure vacuum contactor, inserts load through current transformer and zero sequence current mutual inductor, and the output three-phase of load motor is in inserting switch and form asterism.Threephase potential transformer is connected to mains side; voltage transformer output provides power supply and residual voltage signal to comprehensive protection device; the load-side current transformer links to each other with longitudinal differential, overload protecting circuit in the comprehensive protection device; zero sequence current mutual inductor links to each other with leakage protection circuit in the comprehensive protection device; the wind-powered electricity generation protective circuit links to each other with external connector by horn mouth, and intrinsic safety communication interface circuit links to each other with the external communication line by horn mouth.
Claims (4)
1, a kind of mine explosion-suppression and intrinsic safety type high pressure vacuum electromagnetic starter, comprise switch housing, it is characterized in that: switch housing is divided into two chambeies, right-hand is wire connection cavity (1), cable entry (2) is arranged in wire connection cavity (1), be provided with the output interface, lock between air and electricity contact lead-out wire interface, the gas shutting contact that are respectively applied for connection in wire connection cavity (1) below and introduce four turnover line horn mouths (3) of interface, far and near control introducing interface, zero sequence current mutual inductor (12) and wire connection cavity current transformer (14) also are installed in wire connection cavity (1) simultaneously; Left is main chamber (4); high-pressure vacuum contactor (10) is equipped with in inside; three phase potential transformer (15); main cavity current instrument transformer (11); piezo-resistance (16); isolate latch moving contact (9) and high pressure comprehensive protection device (17); the left side in main chamber (4) is switch door closure (5); wire connection cavity (1) and main chamber (4) place on the base (8); high pressure comprehensive protection device (17) and display (20) are fixed on switch door closure (5) inboard, switch door closure (5) be provided with button (7) and be used for observation display (20) various parameters real-time demonstration and understand the display window (6) of on off state.
2, mine explosion-suppression and intrinsic safety type high pressure vacuum electromagnetic starter according to claim 1, it is characterized in that: the display window (6) that is arranged on the switch door closure (5) in main chamber (4) is the display window (6) of two circles, and switch door closure (5) is provided with seven buttons (7).
3, mine explosion-suppression and intrinsic safety type high pressure vacuum electromagnetic starter according to claim 1, it is characterized in that: the high pressure comprehensive protection device is integrated with the selective earth leakage protection circuit in (17), longitudinal differential, short circuit, overload protecting circuit, lock between air and electricity circuit (19), gas latch circuit (21), overvoltage, under-voltage protecting circuit, show and branch, contacting controling circuit, intrinsic safety communication interface circuit, three phase mains bus (X1, X2, X3) form asterism through wire connection cavity current transformer (14), wire connection cavity current transformer (14) and main cavity current instrument transformer (11) and the interior longitudinal differential of high pressure comprehensive protection device (17), overload protection links to each other, and zero sequence current mutual inductor (12) links to each other with the interior leakage protection circuit of high pressure comprehensive protection device (17); Three phase mains is given three phase potential transformer (15) power supply; three phase potential transformer (15) out-put supply is to high pressure comprehensive protection device (17); be connected with the lock between air and electricity circuit (19) and the gas latch circuit (21) of contact with high pressure comprehensive protection device (17); lock between air and electricity circuit (19) links to each other with external sensor by turnover line horn mouth (3) with gas latch circuit (21) contact line; display (20) links to each other with high pressure comprehensive protection device (17); function button (22) links to each other with high pressure comprehensive protection device (17); three phase potential transformer (15) and three phase mains bus (X1; X2; X3) directly link to each other; when isolating latch moving contact (9) closure; three phase potential transformer (15); three phase potential transformer (15) is output as high pressure comprehensive protection device (17) power supply is provided; the high pressure comprehensive protection device has power circuit in (17); handle the back to demonstration; communication; gather; output provides power supply; high pressure comprehensive protection device (17) electric after; simulate electric leakage by button (7) operation; the overcurrent test, display (20) shows the corresponding protection state.
4, mine explosion-suppression and intrinsic safety type high pressure vacuum electromagnetic starter according to claim 1 is characterized in that: main chamber (4) are cuboid cavitys, and the model of high pressure comprehensive protection device (17) is KLBH-Q.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200899854U CN201402917Y (en) | 2009-05-04 | 2009-05-04 | Mining flameproof and intrinsic safety type high-pressure vacuum electromagnetic starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200899854U CN201402917Y (en) | 2009-05-04 | 2009-05-04 | Mining flameproof and intrinsic safety type high-pressure vacuum electromagnetic starter |
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| Publication Number | Publication Date |
|---|---|
| CN201402917Y true CN201402917Y (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200899854U Expired - Fee Related CN201402917Y (en) | 2009-05-04 | 2009-05-04 | Mining flameproof and intrinsic safety type high-pressure vacuum electromagnetic starter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975881A (en) * | 2010-08-25 | 2011-02-16 | 太原理工大学 | Diagnosis and early warning device of faults of mine explosion-proof dry type transformers |
| CN102638206A (en) * | 2012-05-07 | 2012-08-15 | 电光防爆科技股份有限公司 | Mining explosion-proof safety vacuum electromagnetic starter for combined control on crane and control method thereof |
| CN109473897A (en) * | 2018-06-06 | 2019-03-15 | 国网浙江江山市供电有限公司 | A kind of wheelbarrow switch cabinet static contact false-touch prevention blocking device |
| CN110601039A (en) * | 2019-10-09 | 2019-12-20 | 中煤华晋集团有限公司 | Mining explosion-proof and intrinsically safe dual-power dual-loop illumination comprehensive protection device |
| CN112087905A (en) * | 2020-10-14 | 2020-12-15 | 萧爱矿业设备（天津）有限公司 | Mining flame-proof type vulcanizer control box |
-
2009
- 2009-05-04 CN CN2009200899854U patent/CN201402917Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975881A (en) * | 2010-08-25 | 2011-02-16 | 太原理工大学 | Diagnosis and early warning device of faults of mine explosion-proof dry type transformers |
| CN101975881B (en) * | 2010-08-25 | 2012-05-23 | 太原理工大学 | Diagnosis and early warning device of faults of mine explosion-proof dry type transformers |
| CN102638206A (en) * | 2012-05-07 | 2012-08-15 | 电光防爆科技股份有限公司 | Mining explosion-proof safety vacuum electromagnetic starter for combined control on crane and control method thereof |
| CN102638206B (en) * | 2012-05-07 | 2014-07-30 | 电光防爆科技股份有限公司 | Mining explosion-proof safety vacuum electromagnetic starter for combined control on crane and control method thereof |
| CN109473897A (en) * | 2018-06-06 | 2019-03-15 | 国网浙江江山市供电有限公司 | A kind of wheelbarrow switch cabinet static contact false-touch prevention blocking device |
| CN110601039A (en) * | 2019-10-09 | 2019-12-20 | 中煤华晋集团有限公司 | Mining explosion-proof and intrinsically safe dual-power dual-loop illumination comprehensive protection device |
| CN110601039B (en) * | 2019-10-09 | 2024-06-04 | 中煤华晋集团有限公司 | Mining flameproof and intrinsically safe dual-power dual-loop lighting comprehensive protection device |
| CN112087905A (en) * | 2020-10-14 | 2020-12-15 | 萧爱矿业设备（天津）有限公司 | Mining flame-proof type vulcanizer control box |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20130504 |