CN108952903A - A kind of chain control device of SCR system peculiar to vessel - Google Patents
A kind of chain control device of SCR system peculiar to vessel Download PDFInfo
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- CN108952903A CN108952903A CN201810843961.7A CN201810843961A CN108952903A CN 108952903 A CN108952903 A CN 108952903A CN 201810843961 A CN201810843961 A CN 201810843961A CN 108952903 A CN108952903 A CN 108952903A
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- Prior art keywords
- scr
- valve
- boiler
- inlet valve
- warning box
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of chain control devices of SCR system peculiar to vessel, including diesel generating set, exhaust boiler, SCR reaction unit and gas exhaust piping valve monitoring case, the diesel generating set is connected to SCR pipeline and bypass line by expansion joint, boiler inlet valve is provided on the bypass line, the boiler inlet valve is connected to the exhaust boiler after passing through the expansion joint, the exhaust boiler is connected with boiler export valve, the boiler export valve is connected to muffler by the expansion joint, SCR inlet valve is provided on the SCR pipeline, the SCR import valve pipeline is connected to SCR urea injector, the SCR urea injector is connected to the SCR reaction unit.Beneficial effect is: the present invention can show valve state to instruct crewman's correct operation, and valve is accidentally closed and using Hand-operated butterfly valve to contain with failure alarms prompt, when cost is relatively low to prevent network loop from Single Point of Faliure occur, whole system is not in the case where not being available.
Description
Technical field
The invention belongs to conning equipment fields, and in particular to a kind of chain control device of SCR system peculiar to vessel.
Background technique
Selective catalytic reduction system operating (Selective catalytic reduction system), abbreviation SCR system,
It is mainly made of SCR reaction unit, reductant injection system, control device, exhaust pipe etc., the principle of work and power is in catalyst
Under effect, spray into the reducing agents such as aqueous solution of urea or ammonium hydroxide, the NOX in diesel engine flue gas be reduced into N2 and H2O, CCS in
Directive document " guide is approved and examined to selective catalytic reduction (SCR) system " (letter about SCR system is issued within 2016
Claim " guide "), it is desirable that the diesel engine equipped with SCR system, exhaust pipe should set bypass line and bypass state indicator and meet side
The valve of siphunculus road should be able to be manually opened on the spot and be closed, or increases a set of independent power source and control its opening and closing；It is other
The design of logical structure should be able to prevent because maloperation causes SCR reaction unit channel and bypass line to simultaneously close off situation, should be able to
It realizes after opening all the way wherein, another way could close；When bypass, there should be chain function that SCR system holding is made to stop working
State, and cannot start；Single diesel engine for promote mainly into the case where, by-pass structure should be arranged in SCR system.More diesel engines
For promote mainly into or other purposes subsidiary engine, SCR system can be not provided with by-pass structure；Interlocking gear should be set, can prevent because
SCR reaction unit channel and bypass line is caused to simultaneously close off situation for maloperation.And the operating procedure of bypass should be bypass
After valve fully opens, SCR reaction unit channel is turned off.
For requirements above, control valve should be all equipped with by passing in and out on the exhaust pipe and bypass line of SCR system, and these valves must
It must realize chain control, just be used since SCR system only enters emission control area in ship, if using the distant of hot environment is suitable for
Valve is controlled, then cost is very high.
Summary of the invention
The object of the invention is that providing a kind of chain control dress of SCR system peculiar to vessel to solve the above-mentioned problems
It sets.
The present invention through the following technical solutions to achieve the above objectives:
A kind of chain control device of SCR system peculiar to vessel, including diesel generating set, exhaust boiler, SCR reaction unit and
Gas exhaust piping valve monitoring case, the diesel generating set are connected to SCR pipeline and bypass line, the bypass by expansion joint
Boiler inlet valve is provided on pipeline, the boiler inlet valve is connected to the exhaust boiler after passing through the expansion joint, described
Exhaust boiler is connected with boiler export valve, and the boiler export valve is connected to muffler, the SCR pipeline by the expansion joint
On be provided with SCR inlet valve, the SCR import valve pipeline is connected to SCR urea injector, the SCR urea injector connection
To the SCR reaction unit, the SCR reaction unit is connected on the muffler by SCR outlet valve, the SCR import
Valve is connected to SCR inlet valve warning box by travel switch, and the SCR outlet valve is connected to SCR by the travel switch and goes out
Mouth valve warning box, the boiler inlet valve are connected to boiler inlet valve warning box, the boiler export by the travel switch
Valve is connected to boiler export valve warning box by the travel switch, and the gas exhaust piping valve monitoring case is also connected to middle control system
System, PLC control cabinet and power supply.
In order to further increase service performance of the invention, the SCR inlet valve warning box, SCR outlet valve alarm
The interface of case, the boiler inlet valve warning box and the boiler export valve warning box be provided with SCR inlet valve indicator lamp groups,
SCR outlet valve indicator lamp groups, boiler inlet valve indicator lamp groups, boiler export valve indicator lamp groups, alarm lamp, buzzer and noise reduction are pressed
Key, wherein the SCR inlet valve indicator lamp groups, the SCR outlet valve indicator lamp groups, the boiler inlet valve indicator lamp groups and institute
It states boiler export valve indicator lamp groups and is both provided with two indicator lights, the color of two indicator lights is red respectively and green.
In order to further increase service performance of the invention, the SCR reaction unit is internally provided with temperature sensor.
In order to further increase service performance of the invention, the SCR inlet valve, the SCR outlet valve, the boiler into
Mouth valve and the boiler export valve all use Manual metal sealed butterfly valve, are equipped in the operating stick of the Manual metal sealed butterfly valve
A set of travel switch.
In order to further increase service performance of the invention, the SCR inlet valve warning box, SCR outlet valve alarm
Case, the boiler inlet valve warning box and the boiler export valve warning box are connected by CAN bus and by the CAN bus
It is connected to the gas exhaust piping valve monitoring case.
In order to further increase service performance of the invention, it is the electricity of 220 volts, 50 hertz of frequency that the power supply, which uses voltage,
Source.
In order to further increase service performance of the invention, the PLC control cabinet is SCR reaction unit PLC case, the row
Air pipe valve monitoring case is internally provided with CAN communication module, and the PLC control cabinet and the gas exhaust piping valve monitoring case are logical
Letter connection.
In order to further increase service performance of the invention, the outlet end of the muffler is connected to by the expansion joint
Chimney.
In above structure, the gas exhaust piping of every diesel engine in the diesel generating set be divided into the SCR pipeline and
Described bypass line two parts, the bypass line are that exhaust gas passes through the boiler inlet valve, the exhaust boiler, the boiler
Outlet valve, the muffler are discharged into atmosphere by chimney, and when ship enters emission control region, the exhaust gas in gas exhaust piping is not
Energy direct emission will pass through desulfurization process, at this point, the bypass line is closed, the SCR pipeline is opened, described in exhaust gas process
SCR inlet valve, the SCR urea injector, the SCR reaction unit pass through the SCR outlet valve, institute after carrying out desulphurization reaction
It states muffler and is discharged into atmosphere by chimney, opened in each Manual metal sealed butterfly valve operating stick equipped with a set of stroke
It closes, each Manual metal sealed butterfly valve nearby installs a warning box, and (the i.e. described SCR inlet valve warning box, the SCR go out
Mouth valve warning box, the boiler inlet valve warning box and the boiler export valve warning box), each warning box is equipped with a group valve
Status indicator lamp, such crewman can observe the valvular current switch states of institute by warning box in any valve location,
To instruct crewman's correct operation valve, the CAN communication module that is arranged inside the gas exhaust piping valve monitoring case is by hand
The switch state of dynamic metallic seal butterfly valve is read, and can be shown to display screen, can also be by protocol converter by status information
It is transferred to central control system described in full ship by MODBUS agreement, so that crewman can supervise in real time in positions such as driver's cabin, central station of floating docks
The state of valve is controlled, is furnished with an alarm lamp and a buzzer in each warning box, when the gas exhaust piping valve monitoring case
When thering is valve to be in error condition according to logic judgment, alarm signal will be issued to all warning boxs, make its realization sound simultaneously
Light alarm, to alert operator's operating mistake, should cancel the faulty operation immediately, will miss the valve closed immediately and beaten
It opens, closes valve by correct operation process again, the SCR pipeline and the bypass line cannot simultaneously close off, it is necessary to open one
Shi Caineng closes another, there is temperature sensor, the SCR inlet valve, the SCR outlet valve two in the SCR reaction unit
If a valve does not fully open, high-temperature flue gas can not just pass through, and temperature does not reach requirement, and SCR is idle, general ship
On have more diesel engines, just have cover SCR systems, the valve warning box of system can all be connected by the CAN bus,
Using dual network redundancy communication line, it both can guarantee the rapid feedback of valve operation real time information in this way, and can also prevent network loop from going out
When existing Single Point of Faliure, whole system is not in the case where not being available.
Beneficial effect is: the present invention can show valve state to instruct crewman's correct operation, and with failure alarms
Prompt accidentally closes valve to contain, each warning box imports the travel switch signal of these butterfly valves simultaneously, display together several valves
Switch state to instruct crewman's correct operation valve, and the status information of these valves is associated with, when crewman misses closing valve Times
Alarm lamp and the same alarm of buzzer on alert case, prompt crewman's operating mistake, crewman should stop immediately faulty operation simultaneously at this time
Correct status is reverted to, and applies Hand-operated butterfly valve, cost is relatively low, and warning box can all be connected by CAN bus, so both
It can guarantee the rapid feedback of valve operation real time information, when can also prevent network loop from Single Point of Faliure occur, whole system will not go out
Not the case where not being available now.
Detailed description of the invention
Fig. 1 is a kind of systematic schematic diagram of the chain control device of SCR system peculiar to vessel of the present invention；
Fig. 2 is a kind of auspicious figure in warning box interface of the chain control device of SCR system peculiar to vessel of the present invention；
Fig. 3 is a kind of chain control electrical schematic diagram of the chain control device of SCR system peculiar to vessel of the present invention.
The reference numerals are as follows:
1, diesel generating set；2, exhaust boiler；3, SCR urea injector；4, SCR reaction unit；5, muffler；6, it arranges
Air pipe valve monitoring case；7, SCR inlet valve warning box；8, SCR outlet valve warning box；9, boiler inlet valve warning box；10, pot
Outlet of still valve warning box；11, SCR inlet valve；12, SCR outlet valve；13, boiler inlet valve；14, boiler export valve；15, it expands
Section；16, SCR pipeline；17, bypass line；18, central control system；19, PLC control cabinet；20, power supply；21, CAN bus；22,SCR
Inlet valve indicator lamp groups；23, SCR outlet valve indicator lamp groups；24, boiler inlet valve indicator lamp groups；25, boiler export valve indicator light
Group；26, alarm lamp；27, buzzer；28, noise reduction key；29, travel switch.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As shown in Figure 1-3, a kind of chain control device of SCR system peculiar to vessel, including diesel generating set 1, exhaust boiler
2, SCR reaction unit 4 and gas exhaust piping valve monitoring case 6, diesel generating set 1 are connected to SCR pipeline 16 by expansion joint 15
With bypass line 17, boiler inlet valve 13 is provided on bypass line 17, boiler inlet valve 13 is connected to after passing through expansion joint 15
Exhaust boiler 2, exhaust boiler 2 are connected with boiler export valve 14, and boiler export valve 14 is connected to muffler 5 by expansion joint 15,
SCR inlet valve 11 is provided on SCR pipeline 16,11 pipeline of SCR inlet valve is connected to SCR urea injector 3, the injection of SCR urea
Device 3 is connected to SCR reaction unit 4, and SCR reaction unit 4 is connected on muffler 5 by SCR outlet valve 12, SCR inlet valve 11
It is connected to SCR inlet valve warning box 7 by travel switch 29, SCR outlet valve 12 is connected to SCR outlet valve by travel switch 29
Warning box 8, boiler inlet valve 13 are connected to boiler inlet valve warning box 9 by travel switch 29, and boiler export valve 14 passes through row
Cheng Kaiguan 29 is connected to boiler export valve warning box 10, and gas exhaust piping valve monitoring case 6 is also connected to central control system 18, PLC control
Case 19 and power supply 20 processed.
In order to further increase service performance of the invention, SCR inlet valve warning box 7, SCR outlet valve warning box 8, boiler
The interface of inlet valve warning box 9 and boiler export valve warning box 10 is provided with SCR inlet valve indicator lamp groups 22, SCR outlet valve
Indicator lamp groups 23, boiler inlet valve indicator lamp groups 24, boiler export valve indicator lamp groups 25, alarm lamp 26, buzzer 27 and noise reduction
Key 28, wherein SCR inlet valve indicator lamp groups 22, SCR outlet valve indicator lamp groups 23, boiler inlet valve indicator lamp groups 24 and boiler
Outlet valve indicator lamp groups 25 are both provided with two indicator lights, and the color of two indicator lights is red respectively and green, SCR reaction dress
It sets 4 and is internally provided with temperature sensor, SCR inlet valve 11, SCR outlet valve 12, boiler inlet valve 13 and boiler export valve 14 are all
Using Manual metal sealed butterfly valve, a set of travel switch 29, SCR inlet valve report are installed in the operating stick of Manual metal sealed butterfly valve
Alert case 7, SCR outlet valve warning box 8, boiler inlet valve warning box 9 and boiler export valve warning box 10 are connected by CAN bus 21
And gas exhaust piping valve monitoring case 6 is connected to by CAN bus 21, it is the electricity of 220 volts, 50 hertz of frequency that power supply 20, which uses voltage,
Source, PLC control cabinet 19 are SCR reaction unit PLC case, and gas exhaust piping valve monitoring case 6 is internally provided with CAN communication module, PLC
Control cabinet 19 and gas exhaust piping valve monitoring case 6 communicate to connect, and the outlet end of muffler 5 is connected to chimney by expansion joint 15.
In above structure, the gas exhaust piping of every diesel engine in diesel generating set 1 is divided into SCR pipeline 16 and bypass pipe
17 two parts of road, bypass line 17 are that exhaust gas is passed through by boiler inlet valve 13, exhaust boiler 2, boiler export valve 14, muffler 5
It crosses chimney and is discharged into atmosphere, when ship enters emission control region, the exhaust gas in gas exhaust piping is unable to direct emission will be by de-
Sulphuring treatment, at this point, bypass line 17 close, SCR pipeline 16 open, exhaust gas by SCR inlet valve 11, SCR urea injector 3,
Atmosphere is discharged by chimney by SCR outlet valve 12, muffler 5 after the progress desulphurization reaction of SCR reaction unit 4, each gold manually
Belong to and a set of travel switch is housed in sealed butterfly valve operating stick, each Manual metal sealed butterfly valve nearby installs a warning box (i.e.
SCR inlet valve warning box 7, SCR outlet valve warning box 8, boiler inlet valve warning box 9 and boiler export valve warning box 10), each
Warning box is equipped with the status indicator lamp of 4 groups of valves, and such crewman can be observed in any valve location by warning box all
The current switch states of valve, so that crewman's correct operation valve is instructed, the CAN being arranged inside gas exhaust piping valve monitoring case 6
Communication module reads the switch state of Manual metal sealed butterfly valve, can be shown to display screen, can also pass through protocol conversion
Status information is transferred to full ship central control system 21 by MODBUS agreement by device, so that crewman can be in driver's cabin, central station of floating dock etc.
Position monitors the state of valve in real time, is furnished with an alarm lamp and a buzzer in each warning box, when gas exhaust piping valve
When monitoring case 6 has valve to be in error condition according to logic judgment, alarm signal will be issued to all warning boxs, make it simultaneously
It realizes that sound-light alarm should cancel the faulty operation to alert operator's operating mistake immediately, the valve closed will have been missed immediately
Door is opened, and closes valve by correct operation process again, SCR pipeline 16 and bypass line 17 cannot simultaneously close off, it is necessary to open one
Shi Caineng closes another, there is temperature sensor in SCR reaction unit 4, and 12 two SCR inlet valve 11, SCR outlet valve valves do not have
If fully opening, high-temperature flue gas can not just pass through, and temperature does not reach requirement, SCR be it is idle, have more on general ship
Diesel engine just has more set SCR systems, and the valve warning box of system can all be connected by CAN bus 21, using dual network
Redundancy communication line both can guarantee the rapid feedback of valve operation real time information in this way, and can also prevent network loop from Single Point of Faliure occur
When, whole system is not in the case where not being available.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and equivalents circle
It is fixed.
Claims (8)
1. a kind of chain control device of SCR system peculiar to vessel, including diesel generating set, exhaust boiler, SCR reaction unit and row
Air pipe valve monitoring case, it is characterised in that: the diesel generating set is connected to SCR pipeline and bypass pipe by expansion joint
Road, is provided with boiler inlet valve on the bypass line, the boiler inlet valve pass through be connected to after the expansion joint it is described useless
Gas boiler, the exhaust boiler are connected with boiler export valve, and the boiler export valve is connected to muffler by the expansion joint,
SCR inlet valve is provided on the SCR pipeline, the SCR import valve pipeline is connected to SCR urea injector, the SCR urea
Injector is connected to the SCR reaction unit, and the SCR reaction unit is connected on the muffler by SCR outlet valve, institute
It states SCR inlet valve and SCR inlet valve warning box is connected to by travel switch, the SCR outlet valve is connected by the travel switch
It is connected to SCR outlet valve warning box, the boiler inlet valve is connected to boiler inlet valve warning box by the travel switch, described
Boiler export valve is connected to boiler export valve warning box by the travel switch, and the gas exhaust piping valve monitoring case is also connected with
To central control system, PLC control cabinet and power supply.
2. a kind of chain control device of SCR system peculiar to vessel according to claim 1, it is characterised in that: the SCR import
The interface of valve warning box, the SCR outlet valve warning box, the boiler inlet valve warning box and the boiler export valve warning box
It is provided with SCR inlet valve indicator lamp groups, SCR outlet valve indicator lamp groups, boiler inlet valve indicator lamp groups, the instruction of boiler export valve
Lamp group, alarm lamp, buzzer and noise reduction key, wherein the SCR inlet valve indicator lamp groups, the SCR outlet valve indicator lamp groups,
The boiler inlet valve indicator lamp groups and the boiler export valve indicator lamp groups are both provided with two indicator lights, two indicator lights
Color is red respectively and green.
3. a kind of chain control device of SCR system peculiar to vessel according to claim 1, it is characterised in that: the SCR reaction
Device is internally provided with temperature sensor.
4. a kind of chain control device of SCR system peculiar to vessel according to claim 1, it is characterised in that: the SCR import
Valve, the SCR outlet valve, the boiler inlet valve and the boiler export valve all use Manual metal sealed butterfly valve, the hand
A set of travel switch is housed in the operating stick of dynamic metallic seal butterfly valve.
5. a kind of chain control device of SCR system peculiar to vessel according to claim 1, it is characterised in that: the SCR import
Valve warning box, the SCR outlet valve warning box, the boiler inlet valve warning box and the boiler export valve warning box pass through
CAN bus connects and is connected to the gas exhaust piping valve monitoring case by the CAN bus.
6. a kind of chain control device of SCR system peculiar to vessel according to claim 1, it is characterised in that: the power supply makes
It is the power supply of 220 volts, 50 hertz of frequency with voltage.
7. a kind of chain control device of SCR system peculiar to vessel according to claim 1, it is characterised in that: the PLC control
Case is SCR reaction unit PLC case, and the gas exhaust piping valve monitoring case is internally provided with CAN communication module, the PLC control
Case and the gas exhaust piping valve monitoring case communicate to connect.
8. a kind of chain control device of SCR system peculiar to vessel according to claim 1, it is characterised in that: the muffler
Outlet end chimney is connected to by the expansion joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810843961.7A CN108952903A (en) | 2018-07-27 | 2018-07-27 | A kind of chain control device of SCR system peculiar to vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810843961.7A CN108952903A (en) | 2018-07-27 | 2018-07-27 | A kind of chain control device of SCR system peculiar to vessel |
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|---|---|
| CN108952903A true CN108952903A (en) | 2018-12-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810843961.7A Pending CN108952903A (en) | 2018-07-27 | 2018-07-27 | A kind of chain control device of SCR system peculiar to vessel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459967A (en) * | 2018-12-27 | 2019-03-12 | 凯龙高科技股份有限公司 | A kind of SCR safe control system peculiar to vessel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2078810U (en) * | 1990-10-15 | 1991-06-12 | 吴存军 | Safety automatic protection for diesel engine |
| US7846405B2 (en) * | 2004-05-21 | 2010-12-07 | General Electric Company | Method and apparatus for measuring and controlling selective catalytic reduction (SCR) emission control systems |
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| CN109459967A (en) * | 2018-12-27 | 2019-03-12 | 凯龙高科技股份有限公司 | A kind of SCR safe control system peculiar to vessel |
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