CN209982170U - UPS (uninterrupted power supply) fault switching device - Google Patents
UPS (uninterrupted power supply) fault switching device Download PDFInfo
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Abstract
The utility model provides a UPS fault switching device relates to fermentation exhaust-gas detection technical field, include: the UPS output power supply is externally connected with a load; the mains supply is connected with the UPS output power supply in parallel and respectively supplies power to the load independently; UPS and commercial power interlocking unit, UPS and commercial power interlocking unit with UPS output power source with the commercial power source interlocking is connected, works as UPS output power source or when the commercial power source outage, UPS and commercial power interlocking unit automatic switch over to commercial power source or UPS output power source power supply mode. The technical problem that the normal production of the blast furnace is seriously influenced due to the fact that the self failure rate of the UPS is high, equipment is easily powered off and shut down or the blast furnace is shut down in the prior art is solved, and the technical effects of reducing the failure rate of the UPS and reducing the influence on the production process are achieved.
Description
Technical Field
The utility model relates to a metallurgical power supply technical field especially relates to a UPS fault switching device.
Background
The UPS is a universal Power System, and chinese is translated into an Uninterruptible Power supply, which is a constant voltage and constant frequency Uninterruptible Power supply that includes an energy storage device and an inverter as a main component. When the equipment normally operates, the UPS supplies the stabilized mains supply to the load, and simultaneously charges the battery. When the commercial power is cut off, the UPS immediately converts the battery in the machine into the load through inversion to continuously supply the alternating current power supply, so that the load keeps normal operation until the electric quantity of the battery is exhausted. The power supply of a metallurgical enterprise belongs to a first-level load of power utilization, a two-way power supply is adopted for supplying power, the power supply is relatively stable, although a UPS (uninterrupted Power supply) has excellent performance, in actual operation, the occurrence probability of a mains supply power failure accident is extremely low, the effect of the UPS is not shown, on the contrary, 4-5 faults of important equipment power failure are caused on average every year due to the faults of the UPS, the equipment is shut down if the faults are light, and the blast furnace is shut down if the faults are heavy; the normal production of the blast furnace is seriously influenced.
The application utility model discloses the people is realizing this application embodiment technical scheme's in-process, finds that above-mentioned prior art exists following technical problem at least:
the UPS power supply has high failure rate, is easy to cause the power failure shutdown of equipment or blast furnace damping down, and seriously influences the normal production of the blast furnace.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a UPS trouble auto-change over device has solved among the prior art UPS power self fault rate height, leads to equipment outage to shut down or the blast furnace damping down easily, seriously influences the technical problem of the normal production of blast furnace.
In view of the above problem, the present experimental novel embodiment provides a UPS failure switching apparatus, which includes: the UPS output power supply is externally connected with a load; the mains supply is connected with the UPS output power supply in parallel and respectively supplies power to the load independently; UPS and commercial power interlocking unit, UPS and commercial power interlocking unit with UPS output power source with the commercial power source interlocking is connected, works as UPS output power source or when the commercial power source outage, UPS and commercial power interlocking unit automatic switch over to commercial power source or UPS output power source power supply mode.
Further, the UPS output power supply includes: the main contact of the first alternating current contactor is connected with the first circuit breaker in series, and the current of the UPS output power supply is conveyed to the load.
Further, the mains supply comprises: the main contact of the second alternating current contactor is connected with the second circuit breaker in series, and the current of the mains supply is transmitted to the load.
Further, the UPS and utility interlock unit includes: a first AC contactor; and the auxiliary interlocking contact of the second alternating current contactor is connected with the auxiliary interlocking contact of the first alternating current contactor, and the UPS output power supply is connected with the commercial power supply in an interlocking manner.
Further, the UPS and utility power interlock unit further includes: and the current relay is connected with the first alternating current contactor and the second alternating current contactor and controls the conduction of the first alternating current contactor and the second alternating current contactor.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
an embodiment of the utility model provides a UPS fault switching device, include: the UPS output power supply is externally connected with a load; the mains supply is connected with the UPS output power supply in parallel and respectively supplies power to the load independently; UPS and commercial power interlocking unit, UPS and commercial power interlocking unit with UPS output power source with the commercial power source interlocking is connected, works as UPS output power source or when the commercial power source outage, UPS and commercial power interlocking unit automatic switch over to commercial power source or UPS output power source power supply mode. The technical problem that the normal production of the blast furnace is seriously influenced due to the fact that the self failure rate of the UPS is high, equipment is easily powered off and shut down or the blast furnace is shut down in the prior art is solved, and the technical effects of reducing the failure rate of the UPS and reducing the influence on the production process are achieved.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a UPS power supply apparatus in the prior art.
Fig. 2 is a schematic structural diagram of a UPS failover apparatus according to an embodiment of the present invention.
Description of reference numerals: the UPS comprises a UPS output power supply 1, a commercial power supply 2, a UPS and commercial power interlocking unit 3, a first circuit breaker 10, a first alternating current contactor 11, a second circuit breaker 20, a second alternating current contactor 21 and a current relay 30.
Detailed Description
An embodiment of the utility model provides a UPS fault switching device for UPS power self fault rate is high among the solution prior art, leads to equipment outage to shut down or the blast furnace damping down easily, seriously influences the technical problem of the normal production of blast furnace.
The utility model provides a technical scheme overall thought as follows: the method comprises the following steps: the UPS output power supply is externally connected with a load; the mains supply is connected with the UPS output power supply in parallel and respectively supplies power to the load independently; UPS and commercial power interlocking unit, UPS and commercial power interlocking unit with UPS output power source with the commercial power source interlocking is connected, works as UPS output power source or when the commercial power source outage, UPS and commercial power interlocking unit automatic switch over to commercial power source or UPS output power source power supply mode. The technical effects of reducing the UPS power failure rate and reducing the influence on the production process are achieved.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
The utility model discloses a UPS failure switching device of embodiment please refer to fig. 1-2, and the affiliated device includes:
the UPS output power supply 1 is externally connected with a load;
particularly, refer to the structure of the UPS power among the prior art of fig. 1, the utility model discloses an improvement made on the basis of current UPS power, the external load of UPS output power 1, like industrial computer or PLC circuit. When the equipment normally operates, the UPS supplies the stabilized mains supply to the load, and simultaneously charges the battery in the UPS, so that enough standby power is ensured to supply power to the external load circuit after the mains supply is powered off.
The commercial power supply 2 is connected with the UPS output power supply 1 in parallel, and respectively supplies power to the load independently;
specifically, the utility power supply 2 is connected in parallel with the UPS output power supply 1, and under normal conditions, the utility power supply 2 supplies power to an external load circuit, and because the utility power supply 2 and the UPS output power supply 1 are parallel circuits, they do not affect each other during operation, and when the utility power failure occurs, the utility power supply 2 cannot supply power to the load circuit, and at this moment, the UPS output power supply 1 exhibits its effect.
UPS and commercial power interlocking unit 3, UPS and commercial power interlocking unit 3 with UPS output power 1 with commercial power supply 2 interlocking is connected, works as UPS output power 1 or when commercial power supply 2 cuts off the power supply, UPS and commercial power interlocking unit 3 automatic switch to commercial power supply 2 or UPS output power supply mode.
Specifically, a UPS and commercial power interlocking unit 3 is additionally arranged between a switch of an existing UPS output power supply 1 and a load, a main loop power supply of commercial power is led out from a standby circuit breaker in a low-voltage cabinet of another power supply of a double-path power supply, and a path of power supply is finally formed and output to the load by utilizing the interlocking of the two loops of the UPS and the commercial power. When the UPS fails and is powered off, the switching device automatically switches to the commercial power supply mode.
Further, the UPS output power supply 1 includes: the UPS comprises a first circuit breaker 10 and a first alternating current contactor 11, wherein a main contact of the first alternating current contactor 11 is connected with the first circuit breaker 10 in series, and the current of the UPS output power source 1 is transmitted to the load.
Specifically, in the circuit of the UPS output power supply 1 of the present application, the main contact of the first ac contactor 11 is connected in series with the first circuit breaker 10, and when the main contact of the first ac contactor 11 is closed and the first circuit breaker 20 is closed, the UPS output power supply 1 forms a complete path to transmit current to an external load.
Further, the mains supply 2 includes: a second circuit breaker 20, a second ac contactor 21, the main contact of the second ac contactor 21 with the second circuit breaker 20 is connected in series, will the current of the mains supply 2 is carried to the load.
Specifically, in the electric circuit of the commercial power supply 2, the main contact of the second ac contactor 21 is connected in series with the second circuit breaker 20, and when the main contact of the second ac contactor 21 is closed and the second circuit breaker 20 is closed, the commercial power supply 2 forms a complete path to transmit the current to the external load.
Further, the UPS and utility interlock unit 3 includes: a first AC contactor 11; a second ac contactor 21, the auxiliary interlocking contact of the second ac contactor 21 with the auxiliary interlocking contact of the first ac contactor 11 is connected, and will the UPS output power source 1 and the commercial power source 2 are connected in an interlocking manner.
Specifically, the main contact switch of the second ac contactor 21 in the circuit of the utility power source 2 is disposed in the circuit of the UPS output power source 1, and the auxiliary contact switch is disposed in the circuit of the utility power source 2 and connected in parallel with the contact switch of the first ac contactor 11, and the above circuit arrangement realizes the interlocking connection of the UPS output power source and the utility power source.
Further, the UPS and utility power interlocking unit 3 further includes: and a current relay 30, wherein the current relay 30 is connected with the first ac contactor 11 and the second ac contactor 21, and controls the conduction of the first ac contactor 11 and the second ac contactor 21.
Specifically, the coil of the current relay 30 is disposed on the parallel branch of the circuit of the UPS output power supply 1, when the UPS power supply normally operates, the branch where the coil is located is a normally closed path, the relay main contact switch is disposed on the other branch where the coil is connected in parallel, the relay auxiliary contact switch is disposed in the mains supply circuit, and the current relay 30 is connected to the first ac contactor 11 and the second ac contactor 21 to control the conduction of the first ac contactor 11 and the second ac contactor 21.
Example two
For the first embodiment, an embodiment of the present application further provides a method for using a UPS failure switching apparatus, which is applied to the first embodiment of the UPS failure switching apparatus, and specifically includes:
when the UPS power supply circuit works normally, the first circuit breaker 10 and the second circuit breaker 20 are closed, the relay main contact switch of the UPS power supply circuit is closed, the relay auxiliary contact switch is opened, the contact switch of the first alternating current contactor 11 and the contact switch of the second alternating current contactor 21 are closed, the UPS power supply circuit 1 and the mains supply 2 circuit supply power for an external load, and meanwhile, the UPS power supply circuit 1 charges a battery in the UPS power supply circuit; when the UPS power supply circuit fails, the first circuit breaker 10 is in an off state, the second circuit breaker 20 is still closed, the relay main contact switch in the UPS power supply circuit 1 is opened, the relay triggers the auxiliary contact switch to be closed, the first ac contactor 11 contact switch and the second ac contactor 21 contact switch are both opened, and at this time, the switching device is automatically switched to the commercial power supply mode.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
an embodiment of the utility model provides a UPS fault switching device, include: the UPS output power supply is externally connected with a load; the mains supply is connected with the UPS output power supply in parallel and respectively supplies power to the load independently; UPS and commercial power interlocking unit, UPS and commercial power interlocking unit with UPS output power source with the commercial power source interlocking is connected, works as UPS output power source or when the commercial power source outage, UPS and commercial power interlocking unit automatic switch over to commercial power source or UPS output power source power supply mode. The technical problem that the normal production of the blast furnace is seriously influenced due to the fact that the self failure rate of the UPS is high, equipment is easily powered off and shut down or the blast furnace is shut down in the prior art is solved, and the technical effects of reducing the failure rate of the UPS and reducing the influence on the production process are achieved.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A UPS failover apparatus, the apparatus comprising:
the UPS output power supply is externally connected with a load;
the mains supply is connected with the UPS output power supply in parallel and respectively supplies power to the load independently;
UPS and commercial power interlocking unit, UPS and commercial power interlocking unit with UPS output power source with the commercial power source interlocking is connected, works as UPS output power source or when the commercial power source outage, UPS and commercial power interlocking unit automatic switch over to commercial power source or UPS output power source power supply mode.
2. The apparatus of claim 1, wherein the UPS output power source comprises:
a first circuit-breaker for the first time,
and the main contact of the first alternating current contactor is connected with the first circuit breaker in series, and the current of the UPS output power supply is conveyed to the load.
3. The apparatus of claim 1, wherein the mains power supply comprises:
a second circuit-breaker for the first circuit-breaker,
and the main contact of the second alternating current contactor is connected with the second circuit breaker in series, and the current of the mains supply is transmitted to the load.
4. The apparatus of claim 1, wherein the UPS and utility interlock unit comprises:
a first AC contactor;
and the auxiliary interlocking contact of the second alternating current contactor is connected with the auxiliary interlocking contact of the first alternating current contactor, and the UPS output power supply is connected with the commercial power supply in an interlocking manner.
5. The apparatus of claim 4, wherein the UPS and utility interlock unit further comprises:
and the current relay is connected with the first alternating current contactor and the second alternating current contactor and controls the conduction of the first alternating current contactor and the second alternating current contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078333.0U CN209982170U (en) | 2019-07-11 | 2019-07-11 | UPS (uninterrupted power supply) fault switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078333.0U CN209982170U (en) | 2019-07-11 | 2019-07-11 | UPS (uninterrupted power supply) fault switching device |
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| CN209982170U true CN209982170U (en) | 2020-01-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247470A (en) * | 2019-07-11 | 2019-09-17 | 联峰钢铁（张家港）有限公司 | A kind of UPS failover device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247470A (en) * | 2019-07-11 | 2019-09-17 | 联峰钢铁（张家港）有限公司 | A kind of UPS failover device |
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