CN204615501U - A kind of flameproof high-voltage vacuum distribution equipment for mining of DC operation - Google Patents
A kind of flameproof high-voltage vacuum distribution equipment for mining of DC operation Download PDFInfo
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- CN204615501U CN204615501U CN201520316986.3U CN201520316986U CN204615501U CN 204615501 U CN204615501 U CN 204615501U CN 201520316986 U CN201520316986 U CN 201520316986U CN 204615501 U CN204615501 U CN 204615501U
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Abstract
The utility model discloses a kind of flameproof high-voltage vacuum distribution equipment for mining of DC operation, comprise flameproof high-voltage vacuum distribution equipment for mining major loop and minisize dc power supply; Wherein, flameproof high-voltage vacuum distribution equipment for mining major loop comprises vacuum circuit-breaker, high-tension fuse, voltage transformer and low-tension fuse; Vacuum circuit-breaker is series between three electric power incoming lines and its output, high-tension fuse is parallel to three between electric power incoming line and vacuum circuit-breaker, and the output of high-tension fuse is connected with the input of voltage transformer, the output of voltage transformer is connected with the input of low-tension fuse, the output of low-tension fuse is connected with the input of minisize dc power supply, and the output of minisize dc power supply is connected with secondary circuit load in flameproof high-voltage vacuum distribution equipment for mining.The utility model is that the protection of flameproof high-voltage vacuum distribution equipment for mining and operation circuit can realize uninterrupted power supply.
Description
The technical field is as follows:
the utility model relates to a mining flame-proof type high pressure vacuum distribution device, concretely relates to mining flame-proof type high pressure vacuum distribution device of direct current operation.
Background art:
the prior mine explosion-proof high-voltage vacuum power distribution device in domestic market adopts an alternating-current operating power supply. The specific method generally comprises the steps of taking an alternating current 100V power supply from a voltage transformer in the explosion-proof cabinet, and converting the alternating current into 220V power supply through a step-up transformer to be used as a micro-machine comprehensive protection power supply and a breaker opening and closing operation power supply in the cabinet. If the main circuit fails, the output power is lost on the PT side at the same time, and the circuit breaker cannot be reliably disconnected, that is, reliability is not high.
The utility model has the following contents:
an object of the utility model is to overcome above-mentioned prior art shortcoming, provide a mining flame-proof type high pressure vacuum distribution device of direct current operation, its operating power system who does not receive the influence of external power source has improved power supply system's reliability.
In order to achieve the purpose, the utility model adopts the following technical proposal to realize:
a DC operated mining explosion-proof high-voltage vacuum power distribution device comprises a main loop of the mining explosion-proof high-voltage vacuum power distribution device and a miniature DC power supply; wherein,
the main circuit of the mining explosion-proof high-voltage vacuum power distribution device comprises a vacuum circuit breaker, a high-voltage fuse, a voltage transformer and a low-voltage fuse; the vacuum circuit breaker is connected in series between the three power supply inlet wires and the output end of the vacuum circuit breaker, the high-voltage fuse is connected in parallel between the three power supply inlet wires and the vacuum circuit breaker, the output end of the high-voltage fuse is connected with the input end of the voltage transformer, the output end of the voltage transformer is connected with the input end of the low-voltage fuse, and the output end of the low-voltage fuse is connected with the input end of the miniature direct current power supply.
The utility model discloses further improvement lies in: the vacuum circuit breaker is replaced with a contactor or a load switch.
The utility model discloses further improvement lies in: the low-voltage fuse is replaced by a low-voltage circuit breaker.
The utility model discloses further improvement lies in: the vacuum circuit breaker is a handcart type circuit breaker.
The utility model discloses further improvement lies in: the micro direct current power supply comprises a CPU control module, an AC/DC rectification module, a three-stage charging module, a storage battery, a DC/DC boosting module and a DC/DC voltage stabilizing module; the CPU control module can enable the storage battery to provide a direct-current power supply for the load when the alternating-current input is in power failure;
the AC/DC rectification filter module and the DC/DC voltage stabilizing module form a series loop; the three-stage charging module, the storage battery and the DC/DC boosting module form a series loop through the DC/DC voltage stabilizing module; the two series circuits form a parallel circuit; the output ends of the two series circuits are connected with the load of a secondary circuit in the mining explosion-proof high-voltage vacuum distribution device.
The utility model discloses further improvement lies in: the output of the miniature DC power supply provides DC110V or DC220V power.
The utility model discloses further improvement lies in: the main circuit of the mining explosion-proof high-voltage vacuum power distribution device also comprises a current transformer and a grounding switch; the current transformer and the grounding switch are arranged between the output end of the vacuum circuit breaker and a load.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model discloses a mining flame-proof type high pressure vacuum power distribution device's protection and operation return circuit can realize uninterrupted power supply, and mining flame-proof type high pressure vacuum power distribution device's protect function and operating function can normally work, the excision trouble when guaranteeing the main power supply trouble.
Further, when the external power supply normally works, the power supply of the voltage transformer AC100V is rectified and stabilized by the micro direct-current power supply to supply power to the load, and meanwhile, the storage battery in the micro direct-current power supply is charged; when the external power supply fails, the storage battery supplies power for the load after boosting and stabilizing voltage, and the effect of uninterrupted power supply is achieved.
Description of the drawings:
FIG. 1 is a schematic diagram of the DC-operated mining flame-proof type high-voltage vacuum power distribution device of the present invention;
fig. 2 is a circuit diagram of the micro dc power supply of the present invention.
In the figure: QF is a vacuum circuit breaker; the TV is a voltage transformer; FU1-3 is a high-voltage fuse; FU4-6 is a low-voltage circuit breaker; the ZLB is a micro direct current power supply; LH is a current transformer; ES is the earthing switch; FZ is the load.
The specific implementation mode is as follows:
the invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the utility model relates to a mining flame-proof type high-voltage vacuum power distribution device operated by direct current, which comprises a main loop of the mining flame-proof type high-voltage vacuum power distribution device and a miniature direct current power supply ZLB; wherein,
the main circuit of the mining explosion-proof high-voltage vacuum power distribution device comprises a vacuum circuit breaker QF, a high-voltage fuse FU1-3, a voltage transformer TV and a low-voltage fuse FU 4-6; the vacuum circuit breaker QF is connected in series between the three power supply incoming lines and the output end of the vacuum circuit breaker QF, the high-voltage fuse FU1-3 is connected in parallel between the three power supply incoming lines and the vacuum circuit breaker QF, the output end of the high-voltage fuse FU1-3 is connected with the input end of a voltage transformer TV, the output end of the voltage transformer TV is connected with the input end of a low-voltage fuse FU4-6, and the output end of the low-voltage fuse FU4-6 is connected with the input end of a micro direct-current.
The vacuum circuit breaker QF is a handcart type circuit breaker, and the vacuum circuit breaker QF can be replaced by a contactor or a load switch.
As shown in fig. 2, the miniature DC power ZLB includes a CPU control module, an AC/DC rectifying module, a three-stage charging module, a storage battery, a DC/DC boosting module, and a DC/DC voltage stabilizing module; the CPU control module can enable the storage battery to provide a direct-current power supply for the load when the alternating-current input is in power failure;
the AC/DC rectification filter module and the DC/DC voltage stabilizing module form a series loop; the three-stage charging module, the storage battery and the DC/DC boosting module form a series loop through the DC/DC voltage stabilizing module; the two series circuits form a parallel circuit; the output end of the low-voltage fuse FU4-6 is connected with the input ends of the two series circuits, and the output ends of the two series circuits are connected with a secondary circuit load in the mining explosion-proof high-voltage vacuum power distribution device.
Further, the main circuit of the mining explosion-proof high-voltage vacuum power distribution device also comprises a current transformer LH and a grounding switch ES; the current transformer LH and the grounding switch ES are disposed between the output terminal of the vacuum circuit breaker QF and the load FZ.
The utility model discloses increased miniature DC power supply ZLB on current mining flame-proof type high pressure vacuum distribution device basis, its input side AC100V power is got from voltage transformer TV in the flame-proof cabinet or voltage transformer in the mining flame-proof type high voltage transformer cabinet, and voltage transformer is protected by high tension fuse FU1-3 and low tension fuse FU4-6, and the output side can provide DC110V or DC220V power as required. When the external power supply normally works, the voltage transformer AC100V power supply is rectified and stabilized by the micro direct-current power supply to supply power to the load, and meanwhile, the storage battery in the micro direct-current power supply is charged; when an external power supply fails, the storage battery supplies power to the load after boosting and stabilizing voltage, so that the effect of uninterrupted power supply is achieved, the protection function and the operation function of the mining explosion-proof high-voltage vacuum power distribution device can work normally, and the failure is eliminated.
The capacity of the storage battery is determined according to the common load, the short-time load and the instantaneous load in the mining explosion-proof high-voltage vacuum power distribution device, and the protection and operation functions of the mining explosion-proof high-voltage vacuum power distribution device are met.
Claims (7)
1. A mining flame-proof type high-voltage vacuum power distribution device operated by direct current is characterized in that: the mining explosion-proof high-voltage vacuum power distribution device comprises a main loop of the mining explosion-proof high-voltage vacuum power distribution device and a miniature direct-current power supply (ZLB); wherein,
the main circuit of the mining explosion-proof high-voltage vacuum power distribution device comprises a vacuum circuit breaker (QF), a high-voltage fuse (FU1-3), a voltage Transformer (TV) and a low-voltage fuse (FU 4-6); the vacuum circuit breaker (QF) is connected in series between the three power supply incoming lines and the output end of the three power supply incoming lines, the high-voltage fuse (FU1-3) is connected in parallel between the three power supply incoming lines and the vacuum circuit breaker (QF), the output end of the high-voltage fuse (FU1-3) is connected with the input end of a voltage Transformer (TV), the output end of the voltage Transformer (TV) is connected with the input end of a low-voltage fuse (FU4-6), and the output end of the low-voltage fuse (FU4-6) is connected with the input end of a micro direct current power supply (ZLB).
2. The DC-operated mining explosion-proof high-voltage vacuum power distribution device according to claim 1, characterized in that: the vacuum circuit breaker (QF) is replaced with a contactor or a load switch.
3. The DC-operated mining explosion-proof high-voltage vacuum power distribution device according to claim 1, characterized in that: the low voltage fuse (FU4-6) is replaced with a low voltage circuit breaker.
4. The DC-operated mining explosion-proof high-voltage vacuum power distribution device according to claim 1, characterized in that: the vacuum circuit breaker (QF) is a handcart type circuit breaker.
5. The DC-operated mining explosion-proof high-voltage vacuum power distribution device according to claim 1, characterized in that:
the micro direct current power supply (ZLB) comprises a CPU control module, an AC/DC rectifying module, a three-stage charging module, a storage battery, a DC/DC boosting module and a DC/DC voltage stabilizing module; the CPU control module can enable the storage battery to provide a direct-current power supply for the load when the alternating-current input is in power failure;
the AC/DC rectification filter module and the DC/DC voltage stabilizing module form a series loop; the three-stage charging module, the storage battery and the DC/DC boosting module form a series loop through the DC/DC voltage stabilizing module; the two series circuits form a parallel circuit; the output end of the low-voltage fuse (FU4-6) is connected with the input ends of the two series circuits, and the output ends of the two series circuits are connected with a secondary circuit load in the mining explosion-proof high-voltage vacuum power distribution device.
6. The DC-operated mining explosion-proof high-voltage vacuum power distribution device according to claim 1, characterized in that: the output of the miniature direct current power supply (ZLB) provides a DC110V or DC220V power supply.
7. The DC-operated mining explosion-proof high-voltage vacuum power distribution device according to claim 1, characterized in that: the main circuit of the mining explosion-proof high-voltage vacuum power distribution device also comprises a current transformer (LH) and a grounding switch (ES); the current transformer (LH) and the grounding switch (ES) are arranged between the output of the vacuum circuit breaker (QF) and the load (FZ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316986.3U CN204615501U (en) | 2015-05-15 | 2015-05-15 | A kind of flameproof high-voltage vacuum distribution equipment for mining of DC operation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520316986.3U CN204615501U (en) | 2015-05-15 | 2015-05-15 | A kind of flameproof high-voltage vacuum distribution equipment for mining of DC operation |
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| CN204615501U true CN204615501U (en) | 2015-09-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681779A (en) * | 2017-09-06 | 2018-02-09 | 河南省三禾电气有限公司 | One or two fusion high-pressure vacuum breakers and its monitoring method, system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681779A (en) * | 2017-09-06 | 2018-02-09 | 河南省三禾电气有限公司 | One or two fusion high-pressure vacuum breakers and its monitoring method, system |
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20170208 Address after: 710054 Shaanxi province Xi'an City Road, Yanta Beilin District No. 66 Patentee after: China Coal Sian Desigineering Co., Ltd. Patentee after: Xi'an Mellon control engineering limited liability company Address before: The northern section of Beilin District Yanta Road 710054 Shaanxi city of Xi''an province No. 66 Patentee before: China Coal Sian Desigineering Co., Ltd. |