CN212486190U - Dual-power supply change-over switch structure - Google Patents
Dual-power supply change-over switch structure Download PDFInfo
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- CN212486190U CN212486190U CN202021150531.6U CN202021150531U CN212486190U CN 212486190 U CN212486190 U CN 212486190U CN 202021150531 U CN202021150531 U CN 202021150531U CN 212486190 U CN212486190 U CN 212486190U
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- 101100075174 Arabidopsis thaliana LPAT1 gene Proteins 0.000 description 7
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- 238000000034 method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
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Abstract
The utility model relates to the technical field of circuits, especially, relate to a change over switch structure of dual supply, provide total output, wherein, including control circuit: the first generator branch comprises a first generator, and the first switch is connected in series with the first generator branch; the second generator branch comprises a second generator, and the second switch is connected in series on the second generator branch; the first generator branch and the second generator branch are connected in parallel to the first output branch; the commercial power branch comprises a commercial power supply, and the third switch is connected in series on the commercial power branch; the fourth switch is connected in series with the first output branch, and the commercial power branch and the first output branch are connected in parallel to the total output end. Has the advantages that: the three-branch power supply can be switched on and off quickly, and the current output at the total output end is ensured when any two branches are powered off, so that the problem that the large motor set of the internal combustion engine cannot be switched with a power grid safely and quickly is solved.
Description
Technical Field
The utility model relates to the technical field of circuits, especially, relate to a change over switch structure of dual supply.
Background
The dual-power transfer switch is used in a power supply system, when a main power supply fails, a failed power supply can be prevented from supplying power to a load, a qualified power supply can be reliably selected to be put into normal operation, so that uninterrupted power supply is guaranteed, and the dual-power transfer switch is widely applied to relevant fields such as railways, airports, high-rise buildings, petrochemical engineering and the like.
Along with the development of society, the requirements on high reliability and safety of power supply are higher and higher, and in order to guarantee the life of people and ensure that the lives and properties of people are not influenced and damaged by power grid power failure, the internal combustion engine generator set is widely applied to different fields as an emergency power supply at present, but the generator set is only a power supply for generating electric energy and cannot be directly and quickly switched with the power grid. Therefore, the above-mentioned distinguishing features are the difficulties to be solved by the lace of the person skilled in the art.
Disclosure of Invention
To solve the above problems in the prior art, a dual power supply transfer switch structure is provided.
The specific technical scheme is as follows:
the utility model provides a change over switch structure of dual supply provides all output, wherein, including a control circuit, control circuit includes:
the first generator branch comprises a first generator, and a first switch is connected in series on the first generator branch and used for controlling the on-off of the first generator branch;
the second generator branch comprises a second generator, and a second switch is connected in series on the second generator branch and used for controlling the on-off of the second generator branch;
the first generator branch and the second generator branch are connected in parallel to a first output branch;
the third switch is connected in series on the commercial power branch and used for controlling the on-off of the commercial power branch;
and the fourth switch is connected in series on the first output branch, and the commercial power branch and the first output branch are connected in parallel to the total output end.
Preferably, the first switch and the second switch are connected in parallel to form a first switch assembly;
the third switch and the fourth switch are connected in parallel to form a second switch component.
Preferably, the method further comprises the following steps:
the control circuit is arranged in the box body;
and the cover plate is arranged on one side of the box body.
Preferably, the control circuit further includes:
a first current transformer group connected in series between the first switch assembly and the main output terminal;
and the second current transformer group is connected between the second switch component and the total output end in series.
Preferably, the first current transformer group and the second current transformer group each include at least three current transformers connected in parallel with each other.
Preferably, the control circuit further includes:
the first indicator light is connected between the first generator and the first switch in series;
a second indicator light connected in series between the second generator and the second switch;
the first switch-on indicator lamp is connected in series between the first switch component and the first current sensor group;
the third indicator light is connected between the mains supply and the third switch in series;
the second switch-on indicator lamp is connected in series between the second switch assembly and the second current sensor group;
the first indicator light, the second indicator light, the first closing indicator light, the third indicator light and the second closing indicator light are all installed on the cover plate.
Preferably, a switch controller is arranged on the cover plate and electrically connected with the control circuit to monitor the working conditions of the first generator, the second generator and the mains supply.
Preferably, the method further comprises the following steps:
the first multifunctional instrument is arranged on the cover plate and is connected in series with the first current sensor group;
and the second multifunctional instrument is arranged on the cover plate and is connected in series with the second current sensor group.
Preferably, the box body further comprises a wire passing hole.
Preferably, the first switch assembly and the second switch assembly are each of an electromagnetic drive type structure.
The technical scheme of the utility model beneficial effect lies in: the power supply of the first generator branch, the second generator branch and the commercial power branch is switched on and off quickly, and when any two branches are powered off, the current output end of the main output end is ensured, so that the problem that the existing large generator set of the internal combustion engine cannot be switched with a power grid safely and quickly is solved.
Drawings
Fig. 1 is a schematic circuit diagram of a change-over switch structure according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a first switch assembly according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a second switch assembly according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of a case of an embodiment of the present invention;
fig. 5 is a back view of the case of an embodiment of the present invention;
fig. 6 is a circuit diagram of a first set of current transformers according to an embodiment of the present invention;
fig. 7 is a circuit diagram of a second set of current transformers according to an embodiment of the present invention;
fig. 8 is a circuit connection diagram of the first indicator light, the second indicator light, the third indicator light, the first closing indicator light, and the second closing indicator light according to the embodiment of the present invention;
fig. 9 is a circuit diagram of a first multifunction meter according to an embodiment of the present invention;
fig. 10 is a circuit diagram of a second multifunctional meter according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
The utility model provides a change over switch structure of dual supply provides all output OUT, wherein, including a control circuit 1, control circuit 1 includes:
a first generator branch 10 including a first generator G1, a first switch S1 connected in series to the first generator branch 10 for controlling on/off of the first generator branch 10;
a second generator branch 11 including a second generator G2, a second switch S2 connected in series to the second generator branch 11 for controlling the on/off of the second generator branch 11;
the first generator branch 10 and the second generator branch 11 are connected in parallel to a first output branch 100;
a utility power branch 12 including a utility power U, and a third switch S3 connected in series to the utility power branch 12 for controlling the on/off of the utility power branch 13;
a fourth switch S4 is connected in series to the first output branch 100, and the mains branch and the first output branch 100 are connected in parallel to the total output terminal OUT.
As shown in fig. 1, in this embodiment, three branches are provided, which are a first generator branch 10, a second generator branch 11 and a utility power branch 12, where the first generator branch 10 provides a first power supply to the control circuit through a first generator G1, the second generator branch 11 provides a second power supply to the control circuit through a second generator G2, the utility power branch 12 provides a third power supply to the control circuit through a utility power U, and the first generator branch 10, the second generator branch 11 and the utility power branch 12 are connected in parallel, so as to ensure that when any two branches are powered off, the total output end OUT has current output, that is, the user equipment has current input, to realize fast on-load switching of the three-branch power supply, in this embodiment, the switching time can be set to be less than or equal to 80ms, which effectively solves the problem that the existing large generator set of the internal combustion engine cannot perform safe on-line with the power grid, The problem of quick switching can be used for national specified first-level loads, such as high-rise buildings, post and telecommunications, coal mine ships, industrial flow lines, medical sanitation, military facilities and the like.
In a preferred embodiment, the first switch S1 and the second switch S2 are connected in parallel to form a first switch assembly ATS 1;
the third switch S3 and the fourth switch S4 are connected in parallel to form a second switching assembly ATS 2.
Specifically, in the present embodiment, a first switch assembly ATS1 and a second switch assembly ATS2 are provided, wherein the first switch assembly ATS1 is formed by connecting a first switch S1 and a second switch S2 in parallel, as shown in fig. 2, and the second switch assembly ATS2 is formed by connecting a third switch S3 and a fourth switch S4 in parallel, as shown in fig. 3, so that a dual-power automatic transfer switch is formed in combination to realize fast on-load switching of a three-branch power supply.
In a preferred embodiment, the method further comprises:
the box body 2 is provided with the control circuit 1 arranged in the box body 2;
a cover plate 3, the cover plate 3 is arranged on one side of the box body 2.
Specifically, as shown in fig. 4 and 5, the control circuit 1 in the above technical solution is disposed inside the box body 2, and the top of the box body 2 is provided with a cover plate 3 capable of folding. In addition, a door frame 20 is further provided on the back surface of the box 2, and a door lock 200 is provided on the door frame 20, so that a maintenance person can open the door frame 20 to perform maintenance on the control circuit 1 inside.
In a preferred embodiment, the control circuit 1 further comprises:
a first current transformer group 13 connected in series between the first switching element ATS1 and the total output terminal OUT;
a second current transformer group 14 connected in series between the second switching element ATS2 and the output terminal OUT.
Specifically, as shown in fig. 1, a first current transformer group 13 is connected in series between the first switching assembly ATS1 and the input terminal of the electric device, and a second current transformer group 14 is connected in series between the second switching assembly ATS2 and the input terminal of the electric device. The current transformer is used for converting a primary current with a large value into a secondary current with a small value through a certain transformation ratio, and is used for protection, measurement and the like to avoid the problem. Therefore, in this embodiment, the first current transformer group 13 is used to prevent the first switching assembly ATS1 from being able to transmit a current with a large value to the electric device, so as to protect the electric device, and similarly, the second current transformer group 14 also serves to protect the electric device.
In a preferred embodiment, the first set of current transformers 13 and the second set of current transformers 14 each comprise at least three current transformers connected in parallel with each other.
Specifically, the first current transformer group 13 includes a current sensor TAa, a current sensor TAb, and a current sensor TAc connected in parallel with each other, as shown in fig. 6. The second current transformer 14 includes a current sensor TAu, a current sensor TAv, and a current sensor TAw connected in parallel with each other, as shown in fig. 7.
In a preferred embodiment, the control circuit 1 further comprises:
a first indicator light HW1 connected in series between the first generator G1 and the first switch S1;
a second indicator light HW2 connected in series between the second generator G2 and the second switch S2;
a first closing indicator HW3 connected in series between the first switching element ATS1 and the first current sensor group 13;
a third indicator light HW4 connected in series between the mains power U and the third switch S3;
a second closing indicator HW5 connected in series between the second switching element ATS2 and the second current sensor group 14;
the first indicator light HW1, the second indicator light HW2, the first closing indicator light HW3, the third indicator light HW4, and the second closing indicator light HW5 are all mounted on the cover plate 3.
Specifically, as shown in fig. 8, the first indicator light HW1, the second indicator light HW2, the first closing indicator light HW3, the third indicator light HW4, and the second closing indicator light HW5 are connected in a circuit diagram, the first indicator light HW1 is used to indicate whether the first generator G1 is powered, the second indicator light HW2 is used to indicate whether the second generator G2 is powered, the third indicator light HW4 is used to indicate whether the utility power supply U is powered, the first closing indicator light HW3 is used to indicate whether the first generator G1 or the second generator G2 outputs power, and the second closing indicator light HW5 is used to indicate whether the utility power supply U outputs power. In this embodiment, through setting up these pilot lamps, the user can be audio-visual looks over the operating condition of which branch road power supply, represents this circuit power supply to have the electricity when the pilot lamp is white, represents this circuit power supply when the pilot lamp is red and closes a floodgate on-state.
In this embodiment, the first indicator light HW1 is further connected in series with a first fuse FU1, the second indicator light HW2 is further connected in series with a second fuse FU2, the first closing indicator light HW3 is further connected in series with a third fuse FU3, the third indicator light HW4 is further connected in series with a fourth fuse FU4, and the second closing indicator light HW5 is further connected in series with a fifth fuse FU5, which are both used for protecting the circuit.
In a preferred embodiment, a switch controller (not shown) is disposed on the cover plate 3, and the switch controller (not shown) is electrically connected to the control circuit 1 to monitor the operating conditions of the first generator G1, the second generator G2, and the utility power source U.
In a preferred embodiment, the method further comprises:
a first multifunctional instrument PJ1, disposed on the cover plate 3 and connected in series to the first current sensor group 13;
a second multifunctional meter PJ2 is disposed on the cover plate 3 and is connected in series with the second current sensor group 14.
Specifically, referring to fig. 1, 6-7 and 9-10, where fig. 9 is an internal circuit diagram of the first multifunctional meter PJ1, and fig. 10 is an internal circuit diagram of the second multifunctional meter PJ2, in this embodiment, the first multifunctional meter PJ1 is used to monitor parameters such as voltage, current and power output by the first switch module ATS1 in real time, and the second multifunctional meter PJ2 is used to monitor parameters such as voltage, current and power output by the second switch module ATS2 in real time. In addition, the data parameters monitored by the first multifunctional meter PJ1 and/or the second multifunctional meter PJ2 in the embodiment can also be transmitted to a remote place through 485 communication, so as to facilitate remote monitoring.
In a preferred embodiment, the housing 2 further comprises a wire hole (not shown).
In a preferred embodiment, the first and second switching assemblies ATS1 and ATS2 are each of an electromagnetically driven type construction.
The technical scheme of the utility model beneficial effect lies in: the first switch of the first generator branch and the second switch of the second generator branch are connected in parallel to form a first switch assembly, the third switch of the mains supply branch and the fourth switch of the first generator branch are connected in parallel to form a second switch assembly, rapid on-load switching of two power supplies can be achieved, current output is achieved at the total output end when any two power supplies are disconnected, and the problem that an existing large motor set of the internal combustion engine cannot be safely and rapidly switched with a power grid is effectively solved.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (10)
1. A dual power supply switch structure provides a total output end, and is characterized by comprising a control circuit, wherein the control circuit comprises:
the first generator branch comprises a first generator, and a first switch is connected in series on the first generator branch and used for controlling the on-off of the first generator branch;
the second generator branch comprises a second generator, and a second switch is connected in series on the second generator branch and used for controlling the on-off of the second generator branch;
the first generator branch and the second generator branch are connected in parallel to a first output branch;
the third switch is connected in series on the commercial power branch and used for controlling the on-off of the commercial power branch;
and the fourth switch is connected in series on the first output branch, and the commercial power branch and the first output branch are connected in parallel to the total output end.
2. The diverter switch structure according to claim 1, wherein said first switch and said second switch are connected in parallel as a first switch assembly;
the third switch and the fourth switch are connected in parallel to form a second switch component.
3. The diverter switch structure according to claim 1, further comprising:
the control circuit is arranged in the box body;
and the cover plate is arranged on one side of the box body.
4. The diverter switch structure according to claim 3, wherein said control circuit further comprises:
a first current transformer group connected in series between the first switch assembly and the main output terminal;
and the second current transformer group is connected between the second switch component and the total output end in series.
5. The diverter switch structure according to claim 4, wherein said first set of current transformers and said second set of current transformers each include at least three current transformers connected in parallel with each other.
6. The diverter switch structure according to claim 4, wherein said control circuit further comprises:
the first indicator light is connected between the first generator and the first switch in series;
a second indicator light connected in series between the second generator and the second switch;
the first switch-on indicator lamp is connected between the first switch assembly and the first current transformer group in series;
the third indicator light is connected between the mains supply and the third switch in series;
the second switch-on indicator lamp is connected in series between the second switch assembly and the second current transformer group;
the first indicator light, the second indicator light, the first closing indicator light, the third indicator light and the second closing indicator light are all installed on the cover plate.
7. The switch structure of claim 3, wherein the cover plate is provided with a switch controller, and the switch controller is electrically connected with the control circuit to monitor the working conditions of the first generator, the second generator and the mains supply.
8. The diverter switch structure according to claim 4, further comprising:
the first multifunctional instrument is arranged on the cover plate and is connected in series with the first current transformer group;
and the second multifunctional instrument is arranged on the cover plate and is connected in series with the second current transformer group.
9. The diverter switch structure according to claim 3, wherein the housing further comprises a wire passage hole.
10. The diverter switch structure according to claim 1, wherein said first switch assembly and said second switch assembly each employ an electromagnetically driven type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021150531.6U CN212486190U (en) | 2020-06-19 | 2020-06-19 | Dual-power supply change-over switch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021150531.6U CN212486190U (en) | 2020-06-19 | 2020-06-19 | Dual-power supply change-over switch structure |
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| Publication Number | Publication Date |
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| CN212486190U true CN212486190U (en) | 2021-02-05 |
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| CN202021150531.6U Active CN212486190U (en) | 2020-06-19 | 2020-06-19 | Dual-power supply change-over switch structure |
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| CN (1) | CN212486190U (en) |
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