CN208507214U - A kind of control loop power supply is in alarm device - Google Patents
A kind of control loop power supply is in alarm device Download PDFInfo
- Publication number
- CN208507214U CN208507214U CN201820970351.9U CN201820970351U CN208507214U CN 208507214 U CN208507214 U CN 208507214U CN 201820970351 U CN201820970351 U CN 201820970351U CN 208507214 U CN208507214 U CN 208507214U
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- alarm
- power supply
- overcurrent protection
- output end
- protection fuse
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model belongs to reactor safety I&C system field; more particularly to a kind of control loop power supply in alarm device and its verification method, comprising: drive control module power supply, overcurrent protection fuse, zener diode, logical unit and online alarm unit；The control module power supply, overcurrent protection fuse and zener diode are sequentially connected in series, overcurrent protection fuse further include: overcurrent protection fuse input terminal and overcurrent protection fuse output end；The logical unit is provided with logical unit output end and logical unit input terminal; the overcurrent protection fuse input terminal and overcurrent protection fuse output end are drawn both threads road respectively and are connect with logical unit input terminal, and the logical unit output end and online alarm unit are connected in series.
Description
Technical field
The utility model belongs to reactor safety I&C system field, and in particular to a kind of control loop power supply is alarmed online
Device.
Background technique
The safe I&C system of nuclear power plant reactor is mainly used for ensuring that reactor is subcritical, maintains heap in the case of realization accident
Core is cooling, avoids or reduces the security target that radioactive substance leaks.Safe instrument control system control loop includes signal acquisition, letter
The parts such as number logical process and valve drive control, wherein valve drive control part is by drive control module output 24V electricity
Source voltage receives the switch feedback signal from valve to valve site.
Drive control module exports 24V supply voltage and switchs power supply to valve stroke, passes through valve stroke switch contact
It is closed Returning switch feedback signal, supervision equipment state.Protection fuse is installed in 24V supply voltage circuit, is being powered
It fuses when loop current is excessive, to protect drive control module, valve stroke switchs power loss and loses display at this time, control room
There is failsafe valve alarm.
Due to being not provided with online fault monitoring warning device for 24V electric power loop, when protecting fuse blows, only
Only monitoring terminal is given by hardwire one integrated alarm signal of generation to be shown.
Since DCS system uses centralized control, alarm signal assembles integrated alarm integrative display, generates report in this way
It cannot be accurately positioned when alert to fault point, all circuits that can produce the integrated alarm can only be checked one by one, this is just
Difficulty is increased to maintenance work.
Utility model content
The utility model aim is to provide a kind of control loop power supply in view of the above shortcomings of the prior art to alarm online dress
It sets, for solving the technical issues of accurately indicating loop fault point, while meeting the central controlled requirement of DCS system.
The technical solution of the utility model is:
A kind of control loop power supply is in alarm device, comprising: drive control module power supply, overcurrent protection fusing
Device, zener diode, logical unit and online alarm unit；The control module power supply, overcurrent protection fuse
It is sequentially connected in series with zener diode, overcurrent protection fuse further include: overcurrent protection fuse input terminal and overcurrent protection
Fuse output end；The logical unit is provided with logical unit output end and logical unit input terminal, institute
State overcurrent protection fuse input terminal and overcurrent protection fuse output end to draw both threads road respectively defeated with logical unit
Enter end connection, the logical unit output end and online alarm unit are connected in series.
Online alarm unit is additionally provided with as described above: online alarm unit input terminal and online alarm unit output end；
The logical unit output end is connect with online alarm unit input terminal, and online alarm unit output end connects integrated alarm
Series connection node.
Integrated alarm series connection node as described above is also connected with integrated alarm incoming end and integrated alarm picks out end.
Logical processing unit as described above, which connects group with online alarm unit, becomes monitoring warning device, the overcurrent protection
Fuse connects group with zener diode as power supply unit.
Integrated alarm incoming end and integrated alarm as described above pick out end and constitute integrated alarm circuit.
Zener diode as described above further includes zener diode output end, and zener diode output end is connected to stroke and opens
Close incoming end.
The utility model has the following beneficial effects:
By increasing the in-service monitoring warning device of the utility model design in the loop, failure can be accurately positioned, be conducive to
Maintenance personnel's maintenance, while the generation of power supply integrated alarm is not influenced, meet the central controlled requirement of DCS system.In addition this reality
It is only installed on the control loop power supply in-service monitoring warning device of new design in power supply monitoring alarm circuit, to power supply power supply
Circuit will not generate any influence；The in-service monitoring warning device can accurately be determined in the case where not influencing integrated alarm production
Position failure, is convenient for troubleshooting, can be used for the monitoring of same type current supply circuit.
Detailed description of the invention
Fig. 1 is that control loop power supply designed by the utility model is returned in alarm device drive control module power supply
Road and monitoring circuit schematic diagram；
Wherein, 1-drive control module power supply；2-overcurrent protection fuse input terminals；3-overcurrent protections fusing
Device output end；4-logical calculation device output ends；5-integrated alarm series connection nodes；6-integrated alarm incoming ends；7-is comprehensive
Alarm picks out end；8-travel switch incoming ends；9-overcurrent protection fuses；10-zener diodes；11-logical operation lists
Member；12-online alarm units.
Specific embodiment
A kind of control loop power supply of the utility model is described further in alarm device technology below:
As shown in Figure 1, a kind of control loop power supply is in alarm device, comprising: drive control module power supply 1, mistake
Stream protection fuse 9, zener diode 10, logical unit 11 and online alarm unit 12；The control module power supply electricity
Source 1, overcurrent protection fuse 9 and zener diode 10 are sequentially connected in series, overcurrent protection fuse 9 further include: overcurrent protection
Fuse input terminal 2 and overcurrent protection fuse output end 3；The logical unit 11 is provided with logical unit output
End 4 and logical unit input terminal, the overcurrent protection fuse input terminal 2 and overcurrent protection fuse output end 3 are distinguished
It draws both threads road to connect with logical unit input terminal, the logical unit output end 4 and online alarm unit 12
It is connected in series.
The online alarm unit 12 is additionally provided with: online alarm unit input terminal and online alarm unit output end；Institute
It states logical unit output end 4 to connect with online alarm unit input terminal, online alarm unit output end connects integrated alarm
Series connection node 5.
The integrated alarm series connection node 5 is also connected with integrated alarm incoming end 6 and integrated alarm picks out end 7.
The Logical processing unit 11 and 12 connection group of online alarm unit become monitoring warning device, the overcurrent protection
Fuse 9 and 10 connection group of zener diode become power supply unit.
The integrated alarm incoming end 6 and integrated alarm pick out end 7 and constitute integrated alarm circuit.
The zener diode 10 further includes zener diode output end, and zener diode output end is connected to travel switch
Incoming end 8.
A kind of verification method of control loop power supply in alarm device, comprising the following steps:
Step 1: integrated alarm series connection node 5 is removed from overcurrent protection fuse output end 3；It is protected respectively from overcurrent
Shield fuse input terminal 2 and overcurrent protection fuse output end 3 draw two piece-root grafting lines and are connected to logical unit input terminal；
Step 2: logical unit output end 4 is connect with online alarm unit input terminal；Online alarm unit is defeated
Outlet is connect with integrated alarm series connection node 5；Logical processing unit 11 and the composition monitoring report after line alarm unit 12 is fixed
Alarm device；
Step 3: measurement 1 voltage of drive control module power supply is normal；Take out the current supply circuit overcurrent protection fuse
9, measurement 8 supply voltage of travel switch incoming end is reduced to 0V；
Step 4: check that online alarm unit 12 is alarmed, it was demonstrated that when current supply circuit overcurrent protection fuse 9 fuses
Corresponding online alarm unit 12 will appear warning note；Check that 5 signal of integrated alarm series connection node whether there is simultaneously, if
Signal exists at integrated alarm series connection node 5, then proves that in-service monitoring warning device will not influence integrated alarm function；
Step 4: restore electricity circuit overcurrent protection fuse 9, and measurement 8 voltage of travel switch incoming end restores 24V, card
Bright online alarm unit 12 will not have any impact to current supply circuit.
Verification result shows that online alarm unit 12 can accurately prompt the circuit broken down in current supply circuit failure,
The generation of power supply trouble integrated alarm is not influenced simultaneously.
For utility model device in nuclear plant safety I&C system, drive control module is independently to be arranged in a control
In cabinet.
Drive control module externally exports 24V supply voltage, and 24V supply voltage passes through overcurrent protection fuse and pressure stabilizing two
Pole pipe is switched to device travel and is powered.
In order to effectively be monitored to 24V electric power loop, while event can be accurately positioned under electric power loop fault condition
Hinder point, design increases Logical processing unit and online alarm unit, distinguishes from the arrival end of overcurrent protection fuse and outlet end
Two voltage signal access alarming logic processing units are introduced, alarm signal is generated through processing and accesses online alarm unit, online
Alarm unit exports alarm signal and accesses integrated alarm circuit.
When current supply circuit electric current is greater than overcurrent protection fuse blows electric currents, fuse blows protect drive control mould
Part.Fuse arrival end and the voltage signal of outlet end are generated by logical process monitors alarm signal, and online alarm unit exists
Line prompt；It is exported in monitoring alarm signal access integrated alarm circuit simultaneously, generates integrated alarm signal, do not influence integrated alarm
Integrative display function.
The utility model need to only increase Logical processing unit and online alarm unit, not influence the production of integrated alarm signal
Raw and transmission, will not impact system original design function.
The utility model is explained in detail above in conjunction with embodiment, but the utility model is not limited to above-mentioned implementation
Example, within the knowledge of a person skilled in the art, can also be in the premise for not departing from the utility model aims
It is lower that various changes can be made.The content being not described in detail in the utility model can use the prior art.
Claims (6)
1. a kind of control loop power supply is in alarm device, it is characterised in that: include: drive control module power supply (1), mistake
Stream protection fuse (9), zener diode (10), logical unit (11) and online alarm unit (12)；The control mould
Part power supply (1), overcurrent protection fuse (9) and zener diode (10) are sequentially connected in series, overcurrent protection fuse (9)
Further include: overcurrent protection fuse input terminal (2) and overcurrent protection fuse output end (3)；The logical unit (11)
Be provided with logical unit output end (4) and logical unit input terminal, the overcurrent protection fuse input terminal (2) and
Overcurrent protection fuse output end (3) is drawn both threads road respectively and is connect with logical unit input terminal, the logical operation
Unit output end (4) and online alarm unit (12) are connected in series.
2. a kind of control loop power supply as described in claim 1 is in alarm device, it is characterised in that: the online alarm is single
First (12) are additionally provided with: online alarm unit input terminal and online alarm unit output end；The logical unit output end
(4) it is connect with online alarm unit input terminal, online alarm unit output end connects integrated alarm series connection node (5).
3. a kind of control loop power supply as claimed in claim 2 is in alarm device, it is characterised in that: the integrated alarm string
Interlink point (5) is also connected with integrated alarm incoming end (6) and integrated alarm picks out end (7).
4. a kind of control loop power supply as claimed in claim 3 is in alarm device, it is characterised in that: the logical operation list
First (11) and online alarm unit (12) connection group become monitoring warning device, the overcurrent protection fuse (9) and pressure stabilizing two
Pole pipe (10) connection group becomes power supply unit.
5. a kind of control loop power supply as claimed in claim 4 is in alarm device, it is characterised in that: the integrated alarm connects
Enter end (6) and integrated alarm picks out end (7) and constitutes integrated alarm circuit.
6. a kind of control loop power supply as claimed in claim 4 is in alarm device, it is characterised in that: the zener diode
It (10) further include zener diode output end, zener diode output end is connected to travel switch incoming end (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970351.9U CN208507214U (en) | 2018-06-22 | 2018-06-22 | A kind of control loop power supply is in alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970351.9U CN208507214U (en) | 2018-06-22 | 2018-06-22 | A kind of control loop power supply is in alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208507214U true CN208507214U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820970351.9U Active CN208507214U (en) | 2018-06-22 | 2018-06-22 | A kind of control loop power supply is in alarm device |
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| CN (1) | CN208507214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735321A (en) * | 2018-06-22 | 2018-11-02 | 江苏核电有限公司 | A kind of control loop power supply is in alarm device and its verification method |
-
2018
- 2018-06-22 CN CN201820970351.9U patent/CN208507214U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735321A (en) * | 2018-06-22 | 2018-11-02 | 江苏核电有限公司 | A kind of control loop power supply is in alarm device and its verification method |
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