CN207010232U - A kind of dual redundant power supply apparatus in parallel of dc source - Google Patents
A kind of dual redundant power supply apparatus in parallel of dc source Download PDFInfo
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- CN207010232U CN207010232U CN201720867213.3U CN201720867213U CN207010232U CN 207010232 U CN207010232 U CN 207010232U CN 201720867213 U CN201720867213 U CN 201720867213U CN 207010232 U CN207010232 U CN 207010232U
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Abstract
The utility model discloses a kind of dual redundant power supply apparatus in parallel of dc source, first power supply module is connected in parallel with the second power supply module, the positive pole of first power supply module and the second power supply module is connected to positive bus-bar by check diode respectively, and negative pole is all connected to negative busbar；First power supply module includes the first power supply unit, the second power supply unit, check diode and first level positive bus-bar；Second power supply module includes the 3rd power supply unit, the 4th power supply unit, check diode and second subprime positive bus-bar.The utility model has the advantage of:Reducing power supply unit failed shorted by the dual diode-isolated mode of dual parallel connection causes the adverse effect of relay decompression；One group of check diode of increase more, enhances one and protects again, enhances the stability of electric supply installation output；Guarantee of the safer effective lifting to relay power supply can be achieved in distinctness simple for structure, succinct improvement.
Description
Technical field
A kind of power supply of redundant power supply is the utility model is related to, specifically refers to a kind of dual redundancy in parallel of dc source
Electric supply installation.
Background technology
Electrical equipment generally has special safety requirements or needs high availability.The pith of this equipment is by redundancy
Ground is implemented, to prevent equipment failure when breaking down.
Semiwater gas gas process is the tap of continuity Ammonia Production, and each Gas-making Furnace employs PLC and concentrated
Scattered Automated condtrol, in the 24V DC power-supply systems to each Gas-making Furnace valve station repeater coil are exported to PLC, is employed
With four 24V direct current power boxes of model same specification, its output voltage is in parallel and is mutually redundant power supply, every power supply box when in parallel
Output voltage positive pole connect one have unilateral conduction check diode carry out insulation blocking（See Fig. 1）.
When certain reason occurs in which some or puncture short occurs for multiple check diodes, then the power supply box exports
Just lose insulation blocking effect.On the one hand larger bias current will be caused；On the other hand, when some or multiple power supply boxs occur
During failure, whole electric power system decompression will be caused and cause Gas-making Furnace valve station repeater to be failure to actuate, caused seriously to safety in production
Harm.
The content of the invention
The utility model provides a kind of dual redundant power supply apparatus in parallel of dc source, and its main purpose is to overcome
The check diode generation puncture short or power supply box of existing repeater power supply case will cause entirely to power when breaking down
System decompression and cause after device is failure to actuate the defects of.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is as follows：
A kind of dual redundant power supply apparatus in parallel of dc source, including the first power supply module and the second power supply module, the
One power supply module is connected in parallel with the second power supply module, and the positive pole of the first power supply module and the second power supply module is respectively by inverse
Only diode is connected to positive bus-bar, and 2 negative poles of the first power supply module and the second power supply module are all connected to negative busbar；Described
One power supply module includes the first power supply unit, the second power supply unit, check diode and first level positive bus-bar, and the first power supply is single
Member and the positive pole of the second power supply unit are connected to first level positive bus-bar by check diode respectively；Second power supply module
Including the 3rd power supply unit, the 4th power supply unit, check diode and second subprime positive bus-bar, the 3rd power supply unit and the 4th supplies
The positive pole of electric unit is connected to second subprime positive bus-bar by check diode respectively；First power supply unit, the second power supply unit,
The negative pole of 3rd power supply unit and the 4th power supply unit is all connected to negative busbar.
First power supply unit, the second power supply unit, the 3rd power supply unit and the 4th power supply unit are dc source,
Output voltage is 24V DC voltages.
The check diode uses same size, model：2CZ30A-M.
From above-mentioned to description of the present utility model, compared to the prior art, the utility model has the advantage of：
1. reducing power supply unit failed shorted by the dual diode-isolated mode of dual parallel connection causes relay decompression
Adverse effect.
Increase by one group of check diode more 2., enhance one and protect again, enhance the stability of electric supply installation output.
3. distinctness simple for structure, guarantor of the safer effective lifting to relay power supply can be achieved in succinct improvement
Barrier.
Brief description of the drawings
Fig. 1 is prior art dc source redundant power supply apparatus schematic diagram.
Fig. 2 is a kind of dual redundant power supply apparatus schematic diagram in parallel of dc source of the utility model.
Fig. 1 is into Fig. 2：1 first power supply module, 2 second power supply modules, 3 check diodes, 4 first power supply units, 5
Two power supply units, 6 the 3rd power supply units, 7 the 4th power supply units, 8 positive bus-bars, 9 negative busbars, 10 first level positive bus-bars, 11
Secondary stage positive bus-bar, 12 relays.
Embodiment
1 to Fig. 2 illustrates prior art and specific embodiment of the present utility model with reference to the accompanying drawings.
Accompanying drawing 1 is existing dc source redundant power supply apparatus, herein there is provided redundant circuit, respectively by the first power supply unit
4th, the positive pole of the second power supply unit 5, the 3rd power supply unit 6 and the parallel connection of the 4th power supply unit 7 is connected to just by check diode
Bus 8, the mode that negative pole is connected to negative busbar 9 are connected in parallel.Positive bus-bar 8 and negative busbar 9 are connected to the line of relay 12
Enclose both ends.Each power supply unit is independence and identical 24V dc sources, by the first power supply unit 4 and the second power supply unit 5
As main power source, using the 3rd power supply unit 6 and the 4th power supply unit 7 as stand-by power supply.Main power source is mutually only with stand-by power supply
It is vertical to be mutually redundant power supply.
After the check diode 3 of the first power supply unit 4 connection is generation puncture short due to itself, just lose
Insulation blocking, in these cases, if output loop short-circuit failure occurs for the first power supply unit 4, cause the second power supply list
The larger bias current of first 5, the 3rd power supply unit 6 and the 4th power supply unit 7；Whole 24V dc sources redundant power supply apparatus will be caused
Low pressure is exported, causes the voltage on the coil of relay 12 to be far below 24V, decompression is failure to actuate.
Accompanying drawing 2 uses a kind of new, dual redundant power supply apparatus in parallel of dc source for this, it is characterised in that：Including
First power supply module 1 and the second power supply module 2, the first power supply module 1 are connected in parallel with the second power supply module 2, the first power supply
The positive pole of the power supply module 2 of module 1 and second is connected to positive bus-bar 8, the first power supply module 1 and by check diode 3 respectively
2 negative poles of two power supply modules 2 are all connected to negative busbar 9；First power supply module 1 supplies including the first power supply unit 4, second
The positive pole difference of electric unit 5, check diode 3 and first level positive bus-bar 10, the first power supply unit 4 and the second power supply unit 5
First level positive bus-bar 10 is connected to by check diode 3；Second power supply module 2 includes the 3rd power supply unit the 6, the 4th
The positive pole of power supply unit 7, check diode 3 and second subprime positive bus-bar 11, the 3rd power supply unit 6 and the 4th power supply unit 7 point
Second subprime positive bus-bar 11 is not connected to by check diode 3；First power supply unit 4, the power supply of the second power supply unit the 5, the 3rd
The negative pole of the power supply unit 7 of unit 6 and the 4th is all connected to negative busbar 9.
First power supply unit 4, the second power supply unit 5, the 3rd power supply unit 6 and the 4th power supply unit 7 are dc source,
Output voltage is 24V DC voltages.
Check diode 3 uses same size, model：2CZ30A-M.
1）After the check diode 3 of the first power supply unit 4 connection is generation puncture short due to itself, just lose
Insulation blocking, in these cases if output loop short-circuit failure occurs for the first power supply unit 4, cause the second power supply list
First 5 larger bias currents, cause the first power supply module 1 to export low pressure.But due to connecting between first level positive bus-bar 10 and positive bus-bar 8
The buffer action of the check diode 3 connect, does not interfere with the normal use of the second power supply module 2, and dc source is dual in parallel
Redundant power supply apparatus output is normal.
2）When the check diode 3 connected between first level positive bus-bar 10 and positive bus-bar 8 occurs due to itself
After puncture short, due to the check diode 3 that is connected with the second power supply unit 5 of check diode 3 of the first power supply unit 4 connection
Buffer action, do not interfere with the normal use of the first power supply module 1 and the second power supply module 2, dc source is dual in parallel
Redundant power supply apparatus output is normal.
Specific embodiment of the present utility model is above are only, but design concept of the present utility model is not limited thereto,
All changes for carrying out unsubstantiality to the utility model using this design, all should belong to the row for invading scope of protection of the utility model
For.
Claims (3)
- A kind of 1. dual redundant power supply apparatus in parallel of dc source, it is characterised in that：Supplied including the first power supply module and second Electric module, the first power supply module are connected in parallel with the second power supply module, the positive pole of the first power supply module and the second power supply module Positive bus-bar is connected to by check diode respectively, 2 negative poles of the first power supply module and the second power supply module are all connected to negative Bus；First power supply module includes the first power supply unit, the second power supply unit, check diode and first level positive pole The positive pole of line, the first power supply unit and the second power supply unit is connected to first level positive bus-bar by check diode respectively；Institute Stating the second power supply module includes the 3rd power supply unit, the 4th power supply unit, check diode and second subprime positive bus-bar, and the 3rd supplies The positive pole of electric unit and the 4th power supply unit is connected to second subprime positive bus-bar by check diode respectively；First power supply is single The negative pole of member, the second power supply unit, the 3rd power supply unit and the 4th power supply unit is all connected to negative busbar.
- A kind of 2. dual redundant power supply apparatus in parallel of dc source according to claim 1, it is characterised in that：Described One power supply unit, the second power supply unit, the 3rd power supply unit and the 4th power supply unit are dc source, and output voltage is 24V DC voltages.
- A kind of 3. dual redundant power supply apparatus in parallel of dc source according to claim 1, it is characterised in that：It is described inverse Only diode uses same size, model：2CZ30A-M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720867213.3U CN207010232U (en) | 2017-07-18 | 2017-07-18 | A kind of dual redundant power supply apparatus in parallel of dc source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720867213.3U CN207010232U (en) | 2017-07-18 | 2017-07-18 | A kind of dual redundant power supply apparatus in parallel of dc source |
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| Publication Number | Publication Date |
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| CN207010232U true CN207010232U (en) | 2018-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720867213.3U Active CN207010232U (en) | 2017-07-18 | 2017-07-18 | A kind of dual redundant power supply apparatus in parallel of dc source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635467A (en) * | 2019-09-19 | 2019-12-31 | 李善宝 | Redundant direct current power supply system |
| CN112491130A (en) * | 2020-11-20 | 2021-03-12 | 贵州电网有限责任公司 | Electric locking device of direct current charger |
-
2017
- 2017-07-18 CN CN201720867213.3U patent/CN207010232U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635467A (en) * | 2019-09-19 | 2019-12-31 | 李善宝 | Redundant direct current power supply system |
| CN112491130A (en) * | 2020-11-20 | 2021-03-12 | 贵州电网有限责任公司 | Electric locking device of direct current charger |
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