CN202103403U - 630A mining flame-proof vacuum intelligent sub-feed switch - Google Patents
630A mining flame-proof vacuum intelligent sub-feed switch Download PDFInfo
- Publication number
- CN202103403U CN202103403U CN 201120232542 CN201120232542U CN202103403U CN 202103403 U CN202103403 U CN 202103403U CN 201120232542 CN201120232542 CN 201120232542 CN 201120232542 U CN201120232542 U CN 201120232542U CN 202103403 U CN202103403 U CN 202103403U
- Authority
- CN
- China
- Prior art keywords
- transformer
- coil
- switch
- protection device
- breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Protection Of Transformers (AREA)
Abstract
The utility model relates to a switch, specifically to a 630A mining flame-proof vacuum intelligent sub-feed switch. The utility model overcomes the defects of the conventional 630A mining feed switch having no sub-switch earth leakage protection function which affects safe power supply. The 630A mining flame-proof vacuum intelligent sub-feed switch comprises a vacuum circuit breaker ZD, an isolation switch HK1, a current transformer LH1, a first transformer T1, a power supply module G1, a microcomputer monitoring protection apparatus, a zero sequence current transformer LH2, a three phase reactor SK, and a second transformer T2, wherein an over-current protection terminal of the microcomputer monitoring protection apparatus is connected with the current transformer LH1; a power supply terminal of the microcomputer monitoring protection apparatus is connected with the power supply module G1; and a zero sequence current input terminal of the microcomputer monitoring protection apparatus is connected with the zero sequence current transformer LH2. The 630A mining flame-proof vacuum intelligent sub-feed switch realizes the secondary earth leakage protection of a power supply system and can be widely applied to all the mining power supply system.
Description
Technical field
The utility model relates to switch, is specially intelligent minute feeding switch of a kind of 630A mine explosion-suppression vacuum.
Background technology
According to " safety regulations in coal mine " requirement, underground power supply used will have overcurrent, electric leakage, ground protection.Present domestic 630A feeding switch does not all have selective earth leakage protection; Have only additional direct current creepage protection function, after using as switch-dividing, the operating value that has influence on creepage protection function is changed; Can not guarantee the safety under the coal mine; Present most of unit all gets rid of the creepage protection function of switch-dividing, can not realize two-stage earth leakage protective, and can not guarantee the safe power supply of down-hole.
Summary of the invention
The utility model can't not guarantee the problem of safe power supply in order to solve the existing mining feeding switch of 630A because of there being the switch-dividing creepage protection function, provides a kind of 630A mine explosion-suppression vacuum intelligent minute feeding switch.
The utility model is to adopt following technical scheme to realize: intelligent minute feeding switch of 630A mine explosion-suppression vacuum comprises vacuum circuit-breaker ZD, isolating switch HK1, current transformer LH1 and the first transformer T1; Three phase mains meets vacuum circuit-breaker ZD; Isolating switch HK1 links to each other with the primary coil of the first transformer T1, and the first secondary coil two ends of the first transformer T1 are parallel with the series arm of contact composition of coil and the time-delay relay SJ of series arm that coil and the opening button FA of series arm that the normally-closed contact DL1 of coil and the vacuum circuit-breaker ZD of time-delay relay SJ forms, the second auxiliary relay HZ2 form and switch knob HA, the first auxiliary relay HZ1 respectively; The first secondary coil two ends of the first transformer T1 also link to each other with two ac input ends of the first rectifier ZL1, are parallel with the series arm that the coil HT by the normally opened contact of the first auxiliary relay HZ1 and vacuum circuit-breaker ZD forms between two dc output ends of the first rectifier ZL1; The power module G1, microcomputer monitor and protection device, zero sequence current mutual inductor LH2, three-phase reactor SK and the second transformer T2 that also comprise the first secondary coil two ends that are connected in parallel on the first transformer T1; The overcurrent protection end of microcomputer monitor and protection device links to each other with current transformer LH1; The power end of microcomputer monitor and protection device links to each other with power module G1; The zero-sequence current input of microcomputer monitor and protection device links to each other with zero sequence current mutual inductor LH2; The residual voltage input of microcomputer monitor and protection device links to each other with the second total points K switch 2, and the control end of microcomputer monitor and protection device links to each other with the first total points K switch 1; The two ends of the first total points K switch 1 are parallel with the normally-closed contact DL5 of vacuum circuit-breaker ZD; The neutral point of three-phase reactor SK links to each other with the first total points K switch 1 through first resistance R 1, DC power supply G2, is in series with second capacitor C 2 between connected node between first resistance R 1 and the DC power supply G2 and the ground; Be in series with the primary coil of first capacitor C 1 and the second transformer T2 between connected node between the neutral point of three-phase reactor SK and first resistance R 1 and the ground, the secondary coil of the second transformer T2 links to each other with the second total points K switch 2; In the series arm that the first secondary coil two ends that the first normally opened contact J1-1 of microcomputer monitor and protection device is connected on the first transformer T1 are made up of the normally-closed contact DL1 of the coil of time-delay relay SJ and vacuum circuit-breaker ZD, the first normally-closed contact J1-2 of microcomputer monitor and protection device is connected in parallel on the two ends of opening button FA; The two ends of the second subprime coil of the first transformer T1 are parallel with the series arm of being made up of the second normally opened contact J2-1 of microcomputer monitor and protection device and the second rectifier ZL2, are parallel with series arm and the normally opened contact of the second auxiliary relay HZ2, the normally opened contact DL2 of vacuum circuit-breaker ZD and the series arm that separate winding F forms that normally-closed contact and decompression coil S by the second auxiliary relay HZ2 form between two dc output ends of the second rectifier ZL2.
During work, the isolating switch HK1 and press switch knob HA of closing, the first transformer T1 gets electric, and the power module G1 at the first secondary coil two ends that is parallel to the first transformer T1 is charged, and then the microcomputer monitor and protection device is charged; So the normally opened contact J1-1 of microcomputer monitor and protection device is closed, normally-closed contact J1-2 breaks off, so that the coil of time-delay relay SJ gets is electric, after time-delay a period of time, the normally opened contact of time-delay relay SJ is closed because of the normally-closed contact DL1 of vacuum circuit-breaker ZD is closed; The coil of the first auxiliary relay HZ1 gets electric, and then the normally opened contact of the first auxiliary relay HZ1 is closed; The coil HT of vacuum circuit-breaker ZD gets electric, and vacuum circuit-breaker ZD closes a floodgate, and then major loop is connected; At this moment the normally-closed contact DL1 of vacuum circuit-breaker ZD breaks off; The coil losing electricity of time-delay relay SJ; Then the normally opened contact of time-delay relay SJ breaks off, and makes the coil losing electricity of the auxiliary relay HZ1 that wins, and then the normally opened contact of the first auxiliary relay HZ1 breaks off; The coil HT dead electricity of vacuum circuit-breaker ZD, vacuum circuit-breaker ZD machinery keeps.During outage, press opening button FA, the coil of the second auxiliary relay HZ2 gets; The normally-closed contact of the second auxiliary relay HZ2 switches to normally opened contact, and the normally opened contact DL2 of vacuum circuit-breaker ZD is closed, and then shunt opening coil F gets; Decompression coil S dead electricity makes vacuum circuit-breaker ZD break off.When overcurrent occurring in the circuit, the microcomputer monitor and protection device can judge whether that tripping operation has a power failure through the electric current that detects current transformer.When using as total feeding switch; On the first total points K switch 1 and the second total points K switch 2 are always all got to; Make the microcomputer monitor and protection device add a DC power supply to circuit through DC power supply G2; The microcomputer monitor and protection device passes through to detect the size of direct current then, thereby judges whether electric leakage, has a power failure if electric leakage is just tripped; When using as minute feeding switch; The first total points K switch 1 and the second total points K switch 2 are all got on the branch; And the normally-closed contact DL5 of vacuum circuit-breaker ZD breaks off, and makes DC power supply G2 and microcomputer monitor and protection device break off, and the neutral point of three-phase reactor SK provides a residual voltage through the second transformer T2 and the second total points K switch 2 for the microcomputer monitor and protection device like this; Zero sequence current mutual inductor LH2 provides a zero-sequence current for the microcomputer monitor and protection device simultaneously; Under the support of corresponding software, the microcomputer monitor and protection device is set a comparison value like this, thereby pass through judgement the size and Orientation of residual voltage and zero-sequence current and comparison value; Judge whether leak electricity, if just tripping operation power failure of electric leakage.During tripping operation; The first normally-closed contact J1-2 of microcomputer monitor and protection device is closed, and the coil of the second auxiliary relay HZ2 gets electric, and the normally-closed contact of the second auxiliary relay HZ2 switches to normally opened contact; And the normally opened contact DL2 of vacuum circuit-breaker ZD is closed; Then shunt opening coil F gets electricly, and decompression coil S dead electricity makes vacuum circuit-breaker ZD break off.
The utility model has been realized the secondary earth leakage protective of electric power system, and when leak current fault appearred in the switch-dividing power supply network, the effect of leakage scope had been dwindled in the switch-dividing tripping operation; Satisfied the demand of big capacity electric power system simultaneously, solved existing mining feeding switch and can't not guarantee the problem of safe power supply because of there being the switch-dividing creepage protection function to minute feeding switch, can be adaptable across all mine power supply systems.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model.
Among the figure: 1-microcomputer monitor and protection device.
Embodiment
Intelligent minute feeding switch of 630A mine explosion-suppression vacuum comprises vacuum circuit-breaker ZD, isolating switch HK1, current transformer LH1 and the first transformer T1; Three phase mains meets vacuum circuit-breaker ZD; Isolating switch HK1 links to each other with the primary coil of the first transformer T1, and the first secondary coil two ends of the first transformer T1 are parallel with the series arm of contact composition of coil and the time-delay relay SJ of series arm that coil and the opening button FA of series arm that the normally-closed contact DL1 of coil and the vacuum circuit-breaker ZD of time-delay relay SJ forms, the second auxiliary relay HZ2 form and switch knob HA, the first auxiliary relay HZ1 respectively; The first secondary coil two ends of the first transformer T1 also link to each other with two ac input ends of the first rectifier ZL1, are parallel with the series arm that the coil HT by the normally opened contact of the first auxiliary relay HZ1 and vacuum circuit-breaker ZD forms between two dc output ends of the first rectifier ZL1; The power module G1, microcomputer monitor and protection device 1, zero sequence current mutual inductor LH2, three-phase reactor SK and the second transformer T2 that also comprise the first secondary coil two ends that are connected in parallel on the first transformer T1; The overcurrent protection end of microcomputer monitor and protection device 1 links to each other with current transformer LH1; The power end of microcomputer monitor and protection device 1 links to each other with power module G1; The zero-sequence current input of microcomputer monitor and protection device 1 links to each other with zero sequence current mutual inductor LH2; The residual voltage input of microcomputer monitor and protection device 1 links to each other with the second total points K switch 2, and the control end of microcomputer monitor and protection device 1 links to each other with the first total points K switch 1; The two ends of the first total points K switch 1 are parallel with the normally-closed contact DL5 of vacuum circuit-breaker ZD; The neutral point of three-phase reactor SK links to each other with the first total points K switch 1 through first resistance R 1, DC power supply G2, is in series with second capacitor C 2 between connected node between first resistance R 1 and the DC power supply G2 and the ground; Be in series with the primary coil of first capacitor C 1 and the second transformer T2 between connected node between the neutral point of three-phase reactor SK and first resistance R 1 and the ground, the secondary coil of the second transformer T2 links to each other with the second total points K switch 2; In the series arm that the first secondary coil two ends that the first normally opened contact J1-1 of microcomputer monitor and protection device 1 is connected on the first transformer T1 are made up of the normally-closed contact DL1 of the coil of time-delay relay SJ and vacuum circuit-breaker ZD, the first normally-closed contact J1-2 of microcomputer monitor and protection device 1 is connected in parallel on the two ends of opening button FA; The two ends of the second subprime coil of the first transformer T1 are parallel with the series arm of being made up of the second normally opened contact J2-1 of microcomputer monitor and protection device 1 and the second rectifier ZL2, are parallel with series arm and the normally opened contact of the second auxiliary relay HZ2, the normally opened contact DL2 of vacuum circuit-breaker ZD and the series arm that separate winding F forms that normally-closed contact and decompression coil S by the second auxiliary relay HZ2 form between two dc output ends of the second rectifier ZL2.
During practical implementation, the model of zero sequence current mutual inductor is selected the ZH-LH type for use; The model of microcomputer monitor and protection device is selected the WZB-6 type for use; Isolating switch selects for use the GHK-630/1140 type to isolate reversing switch; The model of vacuum circuit-breaker is selected the CKJ5-630 type for use; The model of three-phase reactor is selected the SK-100 type for use; The model of second transformer is selected BK-50 660/36 type for use.
Claims (1)
1.630A intelligent minute feeding switch of mine explosion-suppression vacuum comprises vacuum circuit-breaker (ZD), isolating switch (HK1), current transformer (LH1) and first transformer (T1); Three phase mains connects vacuum circuit-breaker (ZD); Isolating switch (HK1) links to each other with the primary coil of first transformer (T1), and the first secondary coil two ends of first transformer (T1) are parallel with the series arm of contact composition of coil and the time-delay relay (SJ) of series arm that the coil and the opening button (FA) of series arm that the normally-closed contact (DL1) of coil and the vacuum circuit-breaker (ZD) of time-delay relay (SJ) forms, second auxiliary relay (HZ2) form and switch knob (HA), first auxiliary relay (HZ1) respectively; The first secondary coil two ends of first transformer (T1) also link to each other with two ac input ends of first rectifier (ZL1), are parallel with the series arm of being made up of the coil (HT) of the normally opened contact of first auxiliary relay (HZ1) and vacuum circuit-breaker (ZD) between two dc output ends of first rectifier (ZL1); It is characterized in that: the power module (G1), microcomputer monitor and protection device (1), zero sequence current mutual inductor (LH2), three-phase reactor (SK) and second transformer (T2) that also comprise the first secondary coil two ends that are connected in parallel on first transformer (T1); The overcurrent protection end of microcomputer monitor and protection device (1) links to each other with current transformer (LH1); The power end of microcomputer monitor and protection device (1) links to each other with power module (G1); The zero-sequence current input of microcomputer monitor and protection device (1) links to each other with zero sequence current mutual inductor (LH2); The residual voltage input of microcomputer monitor and protection device (1) links to each other with second total switch-dividing (K2), and the control end of microcomputer monitor and protection device (1) links to each other with first total switch-dividing (K1); The two ends of first total switch-dividing (K1) are parallel with the normally-closed contact (DL5) of vacuum circuit-breaker (ZD); The neutral point of three-phase reactor (SK) links to each other with first total switch-dividing (K1) through first resistance (R1), DC power supply (G2), is in series with second electric capacity (C2) between connected node between first resistance (R1) and the DC power supply (G2) and the ground; Be in series with the primary coil of first electric capacity (C1) and second transformer (T2) between connected node between the neutral point of three-phase reactor (SK) and first resistance (R1) and the ground, the secondary coil of second transformer (T2) links to each other with second total switch-dividing (K2); In the series arm that the first secondary coil two ends that first normally opened contact (J1-1) of microcomputer monitor and protection device (1) is connected on first transformer (T1) are made up of the normally-closed contact (DL1) of the coil of time-delay relay (SJ) and vacuum circuit-breaker (ZD), first normally-closed contact (J1-2) of microcomputer monitor and protection device (1) is connected in parallel on the two ends of opening button (FA); The two ends of the second subprime coil of first transformer (T1) are parallel with the series arm of being made up of second normally opened contact (J2-1) of microcomputer monitor and protection device (1) and second rectifier (ZL2), are parallel with series arm and the normally opened contact of second auxiliary relay (HZ2), the normally opened contact (DL2) of vacuum circuit-breaker (ZD) and the series arm that separate winding (F) is formed be made up of the normally-closed contact and the decompression coil (S) of second auxiliary relay (HZ2) between two dc output ends of second rectifier (ZL2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120232542 CN202103403U (en) | 2011-07-04 | 2011-07-04 | 630A mining flame-proof vacuum intelligent sub-feed switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120232542 CN202103403U (en) | 2011-07-04 | 2011-07-04 | 630A mining flame-proof vacuum intelligent sub-feed switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103403U true CN202103403U (en) | 2012-01-04 |
Family
ID=45389400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120232542 Expired - Fee Related CN202103403U (en) | 2011-07-04 | 2011-07-04 | 630A mining flame-proof vacuum intelligent sub-feed switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202103403U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753026A (en) * | 2015-03-18 | 2015-07-01 | 胡妍 | Electricity leakage protecting system for preventing symmetric electricity leakage |
| CN109360775A (en) * | 2018-11-26 | 2019-02-19 | 淮南万泰电子股份有限公司 | One kind being electric-only propulsion formula feeding switch |
| CN111498427A (en) * | 2020-06-01 | 2020-08-07 | 淮南矿业(集团)有限责任公司 | Chain plate machine delayed start control circuit and control method |
| CN112018766A (en) * | 2020-09-21 | 2020-12-01 | 青岛中加特电气股份有限公司 | High-voltage power distribution cabinet |
| CN111498427B (en) * | 2020-06-01 | 2024-06-04 | 淮南矿业(集团)有限责任公司 | Chain scraper delay starting control circuit and control method |
-
2011
- 2011-07-04 CN CN 201120232542 patent/CN202103403U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753026A (en) * | 2015-03-18 | 2015-07-01 | 胡妍 | Electricity leakage protecting system for preventing symmetric electricity leakage |
| CN109360775A (en) * | 2018-11-26 | 2019-02-19 | 淮南万泰电子股份有限公司 | One kind being electric-only propulsion formula feeding switch |
| CN109360775B (en) * | 2018-11-26 | 2024-02-27 | 淮南万泰电子股份有限公司 | Electric propulsion type feed switch |
| CN111498427A (en) * | 2020-06-01 | 2020-08-07 | 淮南矿业(集团)有限责任公司 | Chain plate machine delayed start control circuit and control method |
| CN111498427B (en) * | 2020-06-01 | 2024-06-04 | 淮南矿业(集团)有限责任公司 | Chain scraper delay starting control circuit and control method |
| CN112018766A (en) * | 2020-09-21 | 2020-12-01 | 青岛中加特电气股份有限公司 | High-voltage power distribution cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101369739B (en) | Spare power automatic switching device and method for three-segment bus two-segment switch | |
| CN103378583A (en) | Feeder automation technical scheme based on intelligent rapid vacuum circuit breaker | |
| CN102005720B (en) | Neutral line breakage detection protection method and device | |
| CN103280780B (en) | A kind of system with non effectively earth ed neutral fault self-recovery method | |
| CN202103403U (en) | 630A mining flame-proof vacuum intelligent sub-feed switch | |
| CN202127283U (en) | Circuit backup power automatic switching protection device | |
| CN106451749B (en) | Emergency protection device and protection method for traction substation control protection system under abnormal working condition | |
| CN105529681A (en) | Leakage protection circuit for low-voltage ungrounded system and realization method | |
| CN103427394A (en) | Mining flame-proof type selective leakage protector | |
| CN202748425U (en) | Residual current protection uninterrupted testing device | |
| CN102646966B (en) | Three-phase fault processing method of distributing line | |
| CN204649899U (en) | Small current grounding failure wire selection system in a kind of dispatching of power netwoks | |
| CN105529685B (en) | A kind of interim IT grounded system switching method of frequency conversion load with TT grounded systems low-pressure system under leak current fault | |
| CN106655171A (en) | Automatic selection method for phase selection control strategies of intermediate circuit breakers under 3/2 connection mode | |
| CN203445594U (en) | Novel explosion-proof type low-voltage selective electric leakage protector used for mining | |
| CN101976819B (en) | Mine explosion-proof alternative current (AC) vacuum electromagnetic starter | |
| CN204927704U (en) | Convertible ground wire protected mode's leakage protection plug | |
| CN204314645U (en) | A kind of low-voltage distribution system by screen break-make automaton | |
| CN203800694U (en) | Dual-power-supply switching loop circuit | |
| CN202840673U (en) | Double power switch control system | |
| CN202405853U (en) | 110-KV double-circuit parallel running line reclosing input line | |
| CN202059150U (en) | Earth leakage protective device suitable for setting address | |
| CN206023235U (en) | A kind of AC three-phase load automatic-balancing system | |
| CN204992551U (en) | Network reconsitution equipment during 10kV feeder trouble | |
| CN103280781A (en) | Fault self-healing method for neutral point effective earthing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20140704 |
|
| EXPY | Termination of patent right or utility model |