CN213093873U - Redundant power supply system - Google Patents
Redundant power supply system Download PDFInfo
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- CN213093873U CN213093873U CN202020367772.XU CN202020367772U CN213093873U CN 213093873 U CN213093873 U CN 213093873U CN 202020367772 U CN202020367772 U CN 202020367772U CN 213093873 U CN213093873 U CN 213093873U
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- 238000002955 isolation Methods 0.000 claims abstract description 29
- 238000012806 monitoring device Methods 0.000 claims description 16
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012369 In process control Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of power supply, in particular to a redundant power supply system, which comprises more than two switching power supplies, more than two isolation diodes and a load connection node; each switching power supply is connected in series with one isolating diode and then connected in parallel to form the load connection node; the load connection node is connected with a load. The utility model discloses a redundant power supply system includes switching power supply more than two, keeps apart diode and load connected node more than two. Each switching power supply is connected in series with an isolation diode and then connected in parallel to form a load connection node. The load connection node is connected with the load. The utility model discloses owing to utilize switching power supply more than two to supply power, can guarantee still to supply power to the load after the partial switching power supply trouble, simultaneously, isolation diode can avoid the electric current to flow backward behind the switching power supply trouble, and the reliability is high.
Description
Technical Field
The utility model relates to a power supply technical field especially relates to redundant power supply system.
Background
In the field of metallurgy automation, a direct-current 24V switching power supply is widely applied to the whole power supply system and is the most basic power unit in process control and program operation. The normal, stable and reliable operation of the direct-current 24V switching power supply is also a premise of stable and reliable whole production process. Therefore, in the production process, how to avoid the problem that the power supply system cannot operate due to the failure of the switching power supply becomes an urgent technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been developed to provide a redundant power supply system that overcomes, or at least partially solves, the above-mentioned problems.
The utility model provides a redundant power supply system, which comprises more than two switching power supplies, more than two isolation diodes and a load connection node;
each switching power supply is connected in series with one isolating diode and then connected in parallel to form the load connection node;
the load connection node is connected with a load.
Preferably, the output voltages of the switching power supplies of the two or more switching power supplies are the same.
Preferably, the switching power supply is a switching power supply converting 220V alternating current to 24V direct current.
Preferably, the positive electrode of each of the switching power supplies is connected to the positive electrode of each of the isolation diodes;
the cathodes of all the isolation diodes are connected in parallel to form the load connection node;
and the cathodes of all the switching power supplies are connected in parallel.
Preferably, the system further comprises a power supply monitoring device, and the dry contacts of the two or more switching power supplies are connected with the power supply monitoring device.
Preferably, the system further comprises an alarm device, and the alarm device is connected with the power supply monitoring device.
Preferably, the power supply monitoring device is a PLC.
The utility model discloses a redundant power supply system includes switching power supply more than two, keeps apart diode and load connected node more than two. Each switching power supply is connected in series with an isolation diode and then connected in parallel to form a load connection node. The load connection node is connected with the load. The utility model discloses owing to utilize switching power supply more than two to supply power, can guarantee still to supply power to the load after the partial switching power supply trouble, simultaneously, isolation diode can avoid the electric current to flow backward behind the switching power supply trouble, and the reliability is high.
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
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a circuit diagram of a redundant power supply system according to an embodiment of the present invention.
Fig. 2 shows a circuit diagram of a redundant power supply system according to another embodiment of the present invention.
Fig. 3 shows a circuit diagram of a redundant power supply system according to an embodiment of the present invention.
The power supply comprises a power supply, a power supply monitoring device and an alarm device, wherein 1 is a switching power supply, 2 is an isolation diode, 3 is a load connection node, 4 is a load, 5 is the power supply monitoring device, and 6 is the alarm device.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the utility model provides a redundant power supply system is applied to in the power supply system who contains the load. As shown in fig. 1, the system includes two or more switching power supplies 1, two or more isolation diodes 2, and a load connection node 3. Each switching power supply 1 is connected with an isolation diode 2 in series and then connected in parallel to form a load connection node 3, and the load connection node 3 is connected with a load 4. The number of isolation diodes 2 is the same as the number of switching power supplies 1, for example, if there are two switching power supplies 1 in the system, i.e. a first switching power supply and a second switching power supply, then there will be two isolation diodes 2 in the system, i.e. a first isolation diode and a second isolation diode, and further the first switching power supply is connected in series with the first isolation diode, the second switching power supply is connected in series with the second isolation diode, and then the first isolation diode and the second isolation diode are connected in parallel to form a load connection node 3.
Note that, in the present application, the isolation diode 2 is unidirectionally conductive.
Further, in order to ensure that the voltage of the load connection node 3 is identical to the voltage of the switching power supply 1, the output voltages of the switching power supplies 1 in the two or more switching power supplies 1 are identical. For example, if two switching power supplies 1, i.e., a first switching power supply and a second switching power supply, exist in the system, the output voltage of the first switching power supply is the same as the output voltage of the second switching power supply. The utility model discloses a redundant power supply system is preferred to be used in direct current 24V power supply system, consequently, switching power supply 1 can change direct current 24V's switching power supply 1 for exchanging 220V, and all switching power supply 1 are the switching power supply 1 that output voltage changed direct current 24V in the system promptly. Thus, the voltage output from the load connection node 3 is 24V.
Regarding the connection mode between the switching power supplies 1 and the isolation diodes 2, the anode of each switching power supply 1 is connected with the anode of each isolation diode 2, the cathodes of all the isolation diodes 2 are connected in parallel to form a load connection node 3, and the cathodes of all the switching power supplies 1 are connected in parallel.
Further, as shown in fig. 2, the redundant power supply system of the present invention further includes a power monitoring device 5, and the dry contact of the switching power supply 1 is connected to the power monitoring device 5. The power supply monitoring device 5 is used for monitoring the working state of each switching power supply 1 in more than two switching power supplies 1. Specifically, the power supply monitoring device 5 may be implemented by using a PLC.
Further, as shown in fig. 2, the redundant power supply system of the present invention further includes an alarm device 6, and the alarm device 6 is connected to the power monitoring device 5. The alarm device 6 is used for giving an alarm when the power supply monitoring device 5 monitors that the working state of at least one switching power supply 1 in the more than two switching power supplies 1 is abnormal.
The following provides an example to explain the structure and operation of the redundant power supply system in detail.
As shown in fig. 3, the redundant power supply system includes two switching power supplies 1, two isolation diodes 2, and one PLC. The switching power supply 1 is a switching power supply 1 for converting alternating current 220V into direct current 24V, anodes of the two switching power supplies 1 are respectively connected in series with an isolating diode 2 and then connected in parallel, 24V direct current is provided for a load 4 after the two switching power supplies are connected in parallel, and cathodes of the two switching power supplies 1 are connected in parallel. The dry contact points of the two switching power supplies 1 are respectively connected with a PLC, and the PLC is used for monitoring the working states of the two switching power supplies 1. As shown in fig. 3, if any one of the switching power supplies 1 fails, the other switching power supply 1 can ensure that the normal operation of the downstream load 4 is not affected, and meanwhile, the current does not flow backwards due to the existence of the isolation diode 2.
The utility model discloses a many switching power supply 1 supplies power simultaneously. Because more than two switching power supplies 1 are used for supplying power, the situation that effective switching power supplies 1 can still supply power to the load 4 after partial switching power supplies 1 are in failure can be ensured, namely, when two switching power supplies 1 exist in the system, if one switching power supply 1 is in failure, the other switching power supply 1 can still supply power and cannot influence the load 4 brought downstream. Meanwhile, the isolation diode 2 can prevent current from flowing backward after the switching power supply 1 fails. The utility model discloses the reliability is high, power supply security is strong.
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 will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations 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 redundant power supply system is characterized by comprising more than two switching power supplies, more than two isolation diodes and a load connection node;
each switching power supply is connected in series with one isolating diode and then connected in parallel to form the load connection node;
the load connecting node is connected with a load;
the system also comprises a power supply monitoring device, wherein the dry contacts of the more than two switching power supplies are connected with the power supply monitoring device;
the system also comprises an alarm device, and the alarm device is connected with the power supply monitoring device.
2. The redundant power supply system according to claim 1 wherein the output voltage of each of said more than two switching power supplies is the same.
3. The redundant power supply system according to claim 2 wherein said switching power supply is a 220V ac to 24V dc switching power supply.
4. The redundant power supply system of claim 1 wherein an anode of each of said switching power supplies is connected to an anode of each of said isolation diodes;
the cathodes of all the isolation diodes are connected in parallel to form the load connection node;
and the cathodes of all the switching power supplies are connected in parallel.
5. The redundant power supply system of claim 1 wherein said power source monitoring device is a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020367772.XU CN213093873U (en) | 2020-03-20 | 2020-03-20 | Redundant power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020367772.XU CN213093873U (en) | 2020-03-20 | 2020-03-20 | Redundant power supply system |
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| Publication Number | Publication Date |
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| CN213093873U true CN213093873U (en) | 2021-04-30 |
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| CN202020367772.XU Active CN213093873U (en) | 2020-03-20 | 2020-03-20 | Redundant power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629987A (en) * | 2021-08-03 | 2021-11-09 | 深圳市康佳壹视界商业显示有限公司 | LED screen electrical control system |
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2020
- 2020-03-20 CN CN202020367772.XU patent/CN213093873U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629987A (en) * | 2021-08-03 | 2021-11-09 | 深圳市康佳壹视界商业显示有限公司 | LED screen electrical control system |
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