CN207603209U - A kind of DC isolation supplies electric installation - Google Patents
A kind of DC isolation supplies electric installation Download PDFInfo
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- CN207603209U CN207603209U CN201721746215.3U CN201721746215U CN207603209U CN 207603209 U CN207603209 U CN 207603209U CN 201721746215 U CN201721746215 U CN 201721746215U CN 207603209 U CN207603209 U CN 207603209U
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- isolation
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- relay system
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- 238000002955 isolation Methods 0.000 title claims abstract description 52
- 238000009434 installation Methods 0.000 title claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 230000005622 photoelectricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
A kind of DC isolation of the utility model supplies electric installation, belongs to DC isolation power supply engineering device technique field；Technical problem to be solved is：It provides one kind holding when switching DC power supply and directly exporting with output is isolated not power off, the DC isolation that can search DC ground fault online supplies electric installation；Solve technical solution that the technical problem uses for：The input terminal of rectification filtering module is connected with DC power supply, and the output terminal of rectification filtering module is connected respectively with non-isolated output control relay system and voltage power amplifier module, is connected after voltage power amplifier module concatenation photoelectric isolation module with central controller；The signal input part of central controller is connected with output control button is isolated, and the signal output end of the central controller concatenates non-isolated output control relay system and is connected after output control relay system is isolated with load respectively；The central controller is also associated with direct current output excision button；The utility model is applied to DC isolation power supply.
Description
Technical field
A kind of DC isolation of the utility model supplies electric installation, belongs to DC isolation power supply engineering device technique field.
Background technology
Important component of the DC power supply as electric system is some important conventional loads, relay protection and automatic
Device, telecommunication devices provide continual power supply, and can provide power supply for emergency lighting.
In the process of running, slight Grounding occurs for entire straight-flow system, will not generate short circuit current, can be after reforwarding
Row, but earth point must be searched in time and eliminate earth fault as early as possible, otherwise when another point ground connection occurs, it is possible to draw
Signal device, relay protection and automatic device, the malfunction of breaker or miss operation are played, and it is short to be likely to cause DC power supply
Road causes fuse blows, makes equipment dead electricity, causes failure accident；Therefore, do not allow straight-flow system on one point under Grounding
Long-play, it is necessary to strengthen on-line monitoring, search rapidly and exclude earth fault, prevent because of caused by DC system grounding
Electric power system fault.
For handling DC ground fault, currently generally take and road is drawn to search method or looked by special online special equipment
It looks for, road is drawn, which to search method, can cause protection or circuit to have a power failure in short-term, not recommend in this way generally, special equipment is searched online
Method can apply and be directly grounded the more low failure of failure or ground resistance, practical effect is good, but works as direct current
When high resistance ground is passed through in circuit, search more difficulty online using special equipment, be easily disturbed there are equipment, location difficulty
The problem of.
Utility model content
The utility model overcomes the shortcomings of the prior art, and technical problem to be solved is：One kind is provided to switch
It keeps not powering off when DC power supply directly output is with being isolated output, the DC isolation power supply of DC ground fault can be searched online
Device；In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of DC isolation supplies electric installation, packet
It includes：Central controller, non-isolated output control relay system, is isolated output control relay system, is whole at isolation output control button
Flow filter module, voltage power amplifier module, photoelectric isolation module；
The input terminal of the rectification filtering module is connected with DC power supply, the output terminal of rectification filtering module respectively with it is non-every
Be connected from output control relay system with voltage power amplifier module, after voltage power amplifier module concatenation photoelectric isolation module with center
Controller is connected；
The signal input part of the central controller is connected with output control button is isolated, the signal of the central controller
Output terminal is connected after concatenating non-isolated output control relay system and isolation output control relay system respectively with load.
The central controller is also associated with direct current output excision button.
The DC isolation is for the circuit structure of electric installation：The normally opened contact of the non-isolated output control relay system
For K1, the normally opened contact of isolation output control relay system is K2；
The central controller controls relay system, the coil that output control relay system is isolated with non-isolated output respectively
It is connected；
It is connected after the output terminal concatenation direct current total power switch S1 of the DC power supply with rectification filtering module, the rectification
It is connected after filter module concatenation normally opened contact K1 with load；
The rectification filtering module is sequentially connected in series voltage power amplifier module, photoelectric isolation module, central controller, normally opened contact
It is connected after K2 with load.
Ammeter is serially connected between the normally opened contact K1 and load, the both ends of load are simultaneously connected to voltmeter, the electric current
Table is connected with the signal output end of voltmeter with central controller.
The central controller is also associated with LED display.
What the utility model had compared with prior art has the beneficial effect that：The utility model is a set of with running by researching and developing
The DC power supply of DC isolation gradually reduces fault coverage using method of substitution, until confirm the device of failure point of DC grounding, it can
To provide the DC power supply of isolation output and non-isolated output, and continuous is kept to load in the handoff procedure of electric source modes
Electricity, whole device is simple in structure, and the power supply type provided is accurate, and power supply status is stablized, and trouble point quickly can be confirmed, fits
Conjunction is promoted the use of.
Description of the drawings
The utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is the electrical block diagram of the utility model；
Fig. 2 is the electrical block diagram of the utility model；
In figure, 1 it is central controller, 2 is isolation output control button, 3 is non-isolated output control relay system, 4 is
Isolation output control relay system, 5 be rectification filtering module, 6 be voltage power amplifier module, 7 be photoelectric isolation module, 8 be direct current
Power supply, 9 are load.
Specific embodiment
As depicted in figs. 1 and 2, a kind of DC isolation of the utility model supplies electric installation, including：Central controller 1, isolation are defeated
Go out control button 2, non-isolated output control relay system 3, isolation output control relay system 4, rectification filtering module 5, voltage
Power amplifier module 6, photoelectric isolation module 7；
The input terminal of the rectification filtering module 5 is connected with DC power supply 8, the output terminal of rectification filtering module 5 respectively with
Non-isolated output control relay system 3 is connected with voltage power amplifier module 6, and the voltage power amplifier module 6 concatenates photoelectric isolation module 7
It is connected afterwards with central controller 1；
The signal input part of the central controller 1 is connected with output control button 2 is isolated, the central controller 1
Signal output end concatenates non-isolated output control relay system 3 and is isolated after output control relay system 4 with loading 9 phases respectively
Even.
The central controller is also associated with direct current output excision button 10.
The DC isolation is for the circuit structure of electric installation：Non-isolated the normally opened of output control relay system 3 touches
Point is K1, and the normally opened contact of isolation output control relay system 4 is K2；
The central controller 1 controls relay system 3 with non-isolated output, output control relay system 4 is isolated respectively
Coil is connected；
It is connected after the output terminal concatenation direct current total power switch S1 of the DC power supply 8 with rectification filtering module 5, it is described whole
Stream filter module 5 is connected after concatenating normally opened contact K1 with load 9；
The rectification filtering module 5 is sequentially connected in series voltage power amplifier module 6, photoelectric isolation module 7, central controller 1, normally opened
It is connected after the K2 of contact with load 9.
The normally opened contact K1 and load 9 between be serially connected with ammeter, load 9 both ends and be connected to voltmeter, the electricity
Flow table is connected with the signal output end of voltmeter with central controller 1.
The central controller 1 is also associated with LED display.
DC power supply 8 of the power supply of the utility model from substation divides after the filter rectification of rectification filtering module 5
Into two circuits, a circuit directly exports, and a turn confession has quite been carried out to DC power supply 8, in addition a circuit is through overvoltage work(
Amplification module 6, photoelectric isolation module 7 are exported again, are equivalent to the DC power supply for providing one group of isolation.
In concrete operations, in addition the control loop of output, which is isolated, can increase backfeed loop, stablize power supply output
Within a certain range, power supply provided by the utility model output and former DC power supply not altogether, quite with other set independence
DC power supply.
One feature of the present apparatus is can to export control button 2 by the isolation being arranged on device to select in power supply
The DC power supply for selecting output is to export or select isolation output through former DC power supply circuit, and in both of which handoff procedure
The power supply of load 9 will not be interrupted, the present apparatus is just because of having this function, it is ensured that device in use will not
Cause the dead electricity of load 9.
The present apparatus is arranged on for electric installation in metal cabinet as DC isolation, and tank surface is provided with corresponding control panel
And patch jack, staff is facilitated to be operated；It should can by device grounding ports to make equipment safety reliably working, before use
By ground connection；
The direct current total power switch S1 is the battery main switch of the present apparatus, is closed a switch, and DC circuit is connected, wind in machine
Fan is started to work, and device is in standby output state；
The direct current output excision button 10 is a self-holding button, and by lower button, DC power output end output is straight
Galvanic electricity pressure, this button are the leading-out terminal of DC power supply using soft switch technique, DC power output end, are pressed by this
Button can control the voltage output of terminal or excision；
The isolation output control button 2 is bounced as non-isolated output, is pressed and is exported for isolation, is non-isolated defeated when bouncing
Go out, and be provided with corresponding state indicator light and go out to the above-mentioned state amount of progress instruction.
In addition the utility model is provided with current voltmeter in load end, the convenient electricity to DC power supply apparatus exports number
According to being acquired, pass central controller 1 back and handled, be finally shown on LED display, staff is made to understand confession in time
Electric installation working condition.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (5)
1. a kind of DC isolation supplies electric installation, it is characterised in that：Including：Central controller（1）, isolation output control button（2）、
Non-isolated output control relay system（3）, isolation output control relay system（4）, rectification filtering module（5）, voltage power amplifier mould
Block（6）, photoelectric isolation module（7）；
The rectification filtering module（5）Input terminal and DC power supply（8）It is connected, rectification filtering module（5）Output terminal difference
With non-isolated output control relay system（3）With voltage power amplifier module（6）It is connected, the voltage power amplifier module（6）Concatenate photoelectricity
Isolation module（7）Afterwards with central controller（1）It is connected；
The central controller（1）Signal input part be isolated output control button（2）It is connected, the central controller（1）
Signal output end concatenate respectively it is non-isolated output control relay system（3）Control relay system is exported with isolation（4）Afterwards with bearing
It carries（9）It is connected.
2. a kind of DC isolation according to claim 1 supplies electric installation, it is characterised in that：The central controller is also connected with
There is direct current output to cut off button（10）.
3. a kind of DC isolation according to claim 2 supplies electric installation, it is characterised in that：The DC isolation supplies electric installation
Circuit structure be：The non-isolated output control relay system（3）Normally opened contact for K1, isolation output control relay system
（4）Normally opened contact be K2；
The central controller（1）Respectively relay system is controlled with non-isolated output（3）, isolation output control relay system（4）
Coil be connected；
The DC power supply（8）Output terminal concatenation direct current total power switch S1 after with rectification filtering module（5）It is connected, it is described whole
Flow filter module（5）Concatenate after normally opened contact K1 with load（9）It is connected；
The rectification filtering module（5）It is sequentially connected in series voltage power amplifier module（6）, photoelectric isolation module（7）, central controller（1）、
After normally opened contact K2 with load（9）It is connected.
4. a kind of DC isolation according to claim 3 supplies electric installation, it is characterised in that：The normally opened contact K1 and load
（9）Between be serially connected with ammeter, load（9）Both ends and be connected to voltmeter, the signal output end of the ammeter and voltmeter
With central controller（1）It is connected.
5. a kind of DC isolation according to claim 4 supplies electric installation, it is characterised in that：The central controller（1）Also
It is connected with LED display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746215.3U CN207603209U (en) | 2017-12-14 | 2017-12-14 | A kind of DC isolation supplies electric installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746215.3U CN207603209U (en) | 2017-12-14 | 2017-12-14 | A kind of DC isolation supplies electric installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207603209U true CN207603209U (en) | 2018-07-10 |
Family
ID=62764199
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721746215.3U Active CN207603209U (en) | 2017-12-14 | 2017-12-14 | A kind of DC isolation supplies electric installation |
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|---|---|
| CN (1) | CN207603209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114253384A (en) * | 2021-12-21 | 2022-03-29 | 中科国微科技(深圳)有限公司 | Monolithic isolation voltage-stabilized source |
-
2017
- 2017-12-14 CN CN201721746215.3U patent/CN207603209U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114253384A (en) * | 2021-12-21 | 2022-03-29 | 中科国微科技(深圳)有限公司 | Monolithic isolation voltage-stabilized source |
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