CN110242425A - Dual fuel engine security system and control method - Google Patents
Dual fuel engine security system and control method Download PDFInfo
- Publication number
- CN110242425A CN110242425A CN201910680591.4A CN201910680591A CN110242425A CN 110242425 A CN110242425 A CN 110242425A CN 201910680591 A CN201910680591 A CN 201910680591A CN 110242425 A CN110242425 A CN 110242425A
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- Prior art keywords
- dual fuel
- fuel engine
- double
- nitrogen
- automatically controlled
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0623—Failure diagnosis or prevention; Safety measures; Testing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
- F02D19/0647—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses a kind of dual fuel engine security systems, including GVU combustion gas valve terminal, two electric-controlled ball valves, negative-pressure air fan, double-wall pipe, double-walled expansion joint, differential pressure pickup, automatically controlled three-way device, nitrogen buffer tank, nitrogen making machine, speed probe, positive pressure fan, automatically controlled butterfly valve, temperature sensor, gas detector, expansion joint and PLC control cabinet, dual fuel engine security system control method of the invention includes A1) the preceding inner tube with nitrogen purging double-wall pipe of dual fuel engine starting, A2) negative-pressure air fan is opened after dual fuel engine starting, B1 two electric-controlled ball valves) are opened and close negative-pressure air fan, B2 automatically controlled butterfly valve and positive pressure fan) are successively opened.The present invention solves the emission problem for solving to be detained natural gas in dual fuel engine inlet and exhaust system, has prevented the hidden danger that dual fuel engine explodes, and improves the safety of dual fuel engine operation.
Description
Technical field
The present invention relates to a kind of dual fuel engine, especially a kind of security system of ship use intermediate speed dual fuel engine and
Control method belongs to dual fuel engine technical field peculiar to vessel.
Background technique
In recent years, increasingly with Energy restructuring, gradually implementation and the engine exhaust regulation of energy-saving and emission-reduction strategy
Strictly, large-scale development and use have been obtained as the natural gas of clean energy resource, come into being in the research and development field of internal combustion engine
Double fuel (diesel engine+natural gas) engine.Currently, dual fuel engine improves and developing stage also in continuous, due to
Natural gas is obvious as a kind of gaseous fuel and the diesel oil difference as liquid fuel, because technology is immature or system is not perfect,
It has been detained a large amount of natural gases in the inlet and exhaust system of internal combustion engine, dual fuel engine is caused to be sent out in starting or stopping process
Raw explosion, gently then damages machine, heavy then cause casualties.Therefore, there is an urgent need to provide a kind of dual fuel engine security system
System and its control method are detained the emission problem of natural gas in the inlet and exhaust system to solve dual fuel engine, improve double combustions
Expect the safety of engine operation.
Summary of the invention
The object of the present invention is to provide a kind of dual fuel engine security system and control methods, prevent dual fuel engine
It explodes in starting or stopping process, improves the safety of dual fuel engine operation.
The present invention is achieved by the following technical programs:
A kind of dual fuel engine security system, including GVU combustion gas valve terminal, two electric-controlled ball valves, negative-pressure air fan, double-walleds
Pipe, double-walled expansion joint, differential pressure pickup, automatically controlled three-way device, nitrogen buffer tank, nitrogen making machine, speed probe, positive pressure fan,
Automatically controlled butterfly valve, temperature sensor, gas detector, expansion joint and PLC control cabinet, combustion gas input terminal pass through GVU combustion gas valve group list
Member is connected with double-wall pipe one end, and double-walled expansion joint, the double-wall pipe other end and automatically controlled three-way device first end phase are equipped in double-wall pipe
Even, automatically controlled three-way device second end leads to the fuel inlet port of dual fuel engine, and nitrogen making machine is connected with nitrogen buffer tank, automatically controlled
The connecting pipe at three-way device third end is connected by the second electric-controlled ball valve with nitrogen buffer tank；In double-wall pipe close to GVU combustion gas
Bleeder pipe is connect by valve terminal one end, is equipped with the first electric-controlled ball valve in bleeder pipe, negative-pressure air fan is communicated with the outer tube of double-wall pipe；Just
Pressure fan is equipped with electricity by connecing on the gas exhaust piping of dual fuel engine by positive pressure fan branch in the positive pressure fan branch
Butterfly valve is controlled, gas exhaust piping side is externally provided with explosion-proof valve；The outer tube wall of double-wall pipe is equipped with differential pressure pickup, dual fuel engine
Spindle end be equipped with speed probe, positive pressure fan bypass duct wall be equipped with temperature sensor, the upside of dual fuel engine also
Equipped with gas detector；Differential pressure pickup, speed probe, temperature sensor and gas detector are electric with PLC control cabinet respectively
Connection.
The purpose of dual fuel engine security system of the present invention can also be realized by following technical measures come a step.
Further, negative pressure is maintained at 0.5kPa in the outer tube of the double-wall pipe.
Further, the gas detector close to dual fuel engine air inlet side, and be located at dual fuel engine on
Height H≤2m of side.
Further, the nitrogen pressure in the nitrogen buffer tank is maintained at 2.5 ~ 3.0MPa.The volume V of nitrogen buffer tank
It is V/V1 > 2 with the ratio between double-wall pipe volume V1.
A kind of control method of dual fuel engine security system, the different step shut down including following A booting and B:
A booting
A1) with the inner tube of nitrogen purging double-wall pipe before dual fuel engine starting
Before dual fuel engine starting, instruction is issued by PLC control cabinet and is separately turned on the first electric-controlled ball valve and the second automatically controlled ball
Valve, and communicate automatically controlled three-way device first end and automatically controlled three-way device third end；Nitrogen successively passes through from nitrogen buffer tank
Two electric-controlled ball valves and automatically controlled three-way device first end start to purge inner tube 2 minutes of double-wall pipe, by natural gas remaining in inner tube
It is discharged from bleeder pipe by bleed outlet B；Subsequent PLC control cabinet issues instruction and simultaneously closes off the first electric-controlled ball valve and the second automatically controlled ball
Valve；
A2) negative-pressure air fan is opened after dual fuel engine starting
After dual fuel engine starting, PLC control cabinet issues instruction and opens negative-pressure air fan, establishes in double-wall pipe outer tube
The negative pressure of 0.5kPa is then evacuated by negative-pressure air fan and is discharged if any leakage natural gas, during dual fuel engine operation, is born
Pressure fan remains operational；
B shutdown
B1 two electric-controlled ball valves) are opened and close negative-pressure air fan
PLC control cabinet issues instruction, repeats A1) process, again simultaneously with remaining natural gas in the inner tube of nitrogen purging double-wall pipe
Close negative-pressure air fan；
B2 automatically controlled butterfly valve and positive pressure fan) are successively opened,
PLC control cabinet issues instruction, successively opens automatically controlled butterfly valve and positive pressure fan, positive pressure fan brings into operation, by gas exhaust piping
In remaining exhaust gas from C mouthfuls be discharged；Positive pressure fan remains operational closes after five minutes, is then shut off automatically controlled butterfly valve.
The purpose of dual fuel engine security system control method of the present invention can also be by following technical measures come a step
It realizes.
Further, the dual fuel engine exhaust temperature ranges are 250 DEG C~500 DEG C, when temperature sensor detects
When being more than 200 DEG C close to the temperature at positive pressure fan to positive pressure fan branch, PLC control cabinet issues instruction, slowly starts positive pressure
Blower reduces the temperature of positive pressure fan branch by positive pressure blowing.
Further, when nitrogen pressure is lower than 2.5MPa in nitrogen buffer tank, the automatic nitrogen making machine that starts is buffered to nitrogen
Tank is filled with nitrogen.
Further, step A1) in dual fuel engine starting before, first passing through manual mode issues PLC control cabinet
The second electric-controlled ball valve is opened in instruction, and nitrogen buffer tank exports the inner tube of nitrogen purging double-wall pipe；After dual fuel engine starting,
The working condition of dual fuel engine is judged by speed probe, PLC control cabinet is transferred to automatic sending dependent instruction at this time
Working condition.
Dual fuel engine security system of the invention is additionally arranged nitrogen buffer tank, nitrogen making machine, positive pressure fan, negative pressure wind
The control method of machine, several electrically-controlled valves and various sensors, dual fuel engine security system is referred to by the program of PLC control cabinet
It enables, is switched on or off individually positive pressure fan, negative-pressure air fan and each electrically-controlled valve, so that before dual fuel engine starting and after closing
It is separately turned on the inner tube of nitrogen buffer tank purging double-wall pipe, natural gas remaining in inner tube is discharged from by bleeder pipe.This hair
The bright emission problem for solving to be detained natural gas in dual fuel engine inlet and exhaust system, it is quick-fried to have prevented dual fuel engine generation
Fried hidden danger improves the safety of dual fuel engine operation.
The advantages and features of the present invention will be illustrated and explained by the non-limitative illustration of preferred embodiment below,
These embodiments only provide as an example referring to attached drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of dual fuel engine security system of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawing and applied to the embodiment of double fuel engine unit.
As shown in Figure 1, the present embodiment includes 1, two electric-controlled ball valve, negative-pressure air fan 2, double-wall pipe of GVU combustion gas valve terminal
3, double-walled expansion joint 4, differential pressure pickup 5, automatically controlled three-way device 6, nitrogen buffer tank 7, nitrogen making machine 8, speed probe 9, positive pressure
Blower 10, automatically controlled butterfly valve 11, temperature sensor 12, gas detector 13, expansion joint 14 and PLC control cabinet 15, combustion gas input terminal A
It is connected by GVU combustion gas valve terminal 1 with 3 left end of double-wall pipe, double-walled expansion joint 4 is equipped in double-wall pipe 3, can be compensated because of temperature
Difference and additional stress caused by mechanical oscillation, it is ensured that the safe handling of double-wall pipe 3.3 right end of double-wall pipe and automatically controlled three-way device the
One end 61 is connected, and automatically controlled three-way device second end 62 leads to 0 input terminal of fuel of dual fuel engine 100, nitrogen making machine 8 and nitrogen
Surge tank 7 is connected, and the connecting pipe 631 at automatically controlled three-way device third end 63 passes through the second electric-controlled ball valve 18 and nitrogen buffer tank 7
It is connected.Bleeder pipe 16 is connect by 1 one end of GVU combustion gas valve terminal in double-wall pipe 3, is equipped with the first electric-controlled ball valve in bleeder pipe 16
17, negative-pressure air fan 2 is communicated with the outer tube 31 of double-wall pipe, so that the negative pressure in double-wall pipe outer tube 31 is maintained at 0.5kPa, thus
Make the natural gas of leakage pass through negative-pressure air fan 2 in time to be discharged.
Positive pressure fan 10 by positive pressure fan branch 20 by connecing on the gas exhaust piping 30 of dual fuel engine 100, positive pressure
Automatically controlled butterfly valve 11 is equipped in blower branch 20,30 side of gas exhaust piping is externally provided with explosion-proof valve 19, so that dual fuel engine 100 is protected
Hold safe operation.
The outer tube wall of double-wall pipe 3 is equipped with differential pressure pickup 5, and the spindle end of dual fuel engine 100 is equipped with revolution speed sensing
Device 19, positive 20 tube wall of pressure fan branch are equipped with temperature sensor 12, are additionally provided with combustion gas in the upside of dual fuel engine 100 and visit
Survey device 13；Differential pressure pickup 5, speed probe 9, temperature sensor 12 and gas detector 13 are electric with PLC control cabinet 15 respectively
Connection.
Gas detector 13 and is located at the height of the top of dual fuel engine 100 close to the air inlet side of dual fuel engine 100
H≤2m is spent, improves the detectivity of gas detector 13, it is ensured that the operational safety of dual fuel engine 100.
Nitrogen pressure in nitrogen buffer tank 7 is maintained at 2.5 ~ 3.0MPa.The volume V and double-wall pipe 3 of nitrogen buffer tank 7 hold
The ratio between product V1 is V/V1 > 2, guarantees the interior of the nitrogen purging double-wall pipe 3 that enough pressure and flow are contained in nitrogen buffer tank 7
Remaining natural gas in pipe 32, so that dual fuel engine 100 keeps safe operation.
A kind of control method of dual fuel engine security system, the different step shut down including following A booting and B:
A booting
A1 with the inner tube 32 of nitrogen purging double-wall pipe 3 before) dual fuel engine 100 starts
Before dual fuel engine 100 starts, instruction is issued by PLC control cabinet 15 and is separately turned on the first electric-controlled ball valve 17 and second
Electric-controlled ball valve 18, and communicate automatically controlled three-way device first end 61 and automatically controlled three-way device third end 63；Nitrogen is buffered from nitrogen
Tank 7 successively starts totally 2 points of inner tube 32 of purging double-wall pipe 3 by the second electric-controlled ball valve 18 and automatically controlled three-way device first end 61
Remaining natural gas in inner tube 32 is discharged from bleeder pipe 16 by bleed outlet B clock；It is same that subsequent PLC control cabinet 15 issues instruction
When close the first electric-controlled ball valve 17 and the second electric-controlled ball valve 18.
A2 negative-pressure air fan 2 is opened after) dual fuel engine 100 starts
After dual fuel engine 100 starts, PLC control cabinet 15 issues instruction and opens negative-pressure air fan 2, in the outer tube 32 of double-wall pipe
The negative pressure for inside establishing 0.5kPa then passes through the pumping discharge of negative-pressure air fan 2 if any leakage natural gas；It is transported in dual fuel engine 100
Between the departure date, negative-pressure air fan 2 is remained operational, the natural gas of discharge leakage in time, it is ensured that the safe operation of dual fuel engine 100.
B shutdown
B1 two electric-controlled ball valves) are opened and close negative-pressure air fan 2
PLC control cabinet 15 issues instruction, repeats A1) process, it is remaining natural in the inner tube 32 with nitrogen purging double-wall pipe 3 again
Gas simultaneously closes negative-pressure air fan 2.
B2 automatically controlled butterfly valve 11 and positive pressure fan 10) are successively opened
PLC control cabinet 15 issues instruction, successively opens automatically controlled butterfly valve 11 and positive pressure fan 10, and positive pressure fan 10 brings into operation, and protects
It holds operation to close after five minutes, the remaining exhaust gas in gas exhaust piping 30 is discharged from C mouthfuls, is then shut off automatically controlled butterfly valve 11.
100 exhaust temperature ranges of dual fuel engine are 250 DEG C~500 DEG C, when temperature sensor detects positive pressure fan
When branch 20 is more than 200 DEG C close to the temperature at positive pressure fan 10, PLC control cabinet 15 issues instruction, slowly starts positive pressure fan
10, the temperature of positive pressure fan branch 20 is reduced to protect positive pressure fan 10 by positive pressure blowing.
When nitrogen pressure is lower than 2.5MPa in nitrogen buffer tank 7, nitrogen making machine 8 starts automatically to be filled with to nitrogen buffer tank 7
Nitrogen is released with guaranteeing to have in nitrogen buffer tank 7 enough nitrogen to pass through remaining natural gas in inner tube 32 from bleeder pipe 16
Mouth B discharge, it is ensured that the safe operation of dual fuel engine 100.
Step A1) in dual fuel engine 100 starting before, first pass through manual mode make PLC control cabinet 15 issue instruction
The second electric-controlled ball valve 18 is opened, nitrogen buffer tank 7 exports the inner tube 32 of nitrogen purging double-wall pipe 3.It is opened in dual fuel engine 100
After dynamic, the working condition of dual fuel engine 100 is judged by speed probe 9, PLC control cabinet 15 is transferred to automatic hair at this time
The working condition of dependent instruction out.
In addition to the implementation, the present invention can also have other embodiments, all to use equivalent substitution or equivalent transformation shape
At technical solution, be all fallen within the protection domain of application claims.
Claims (9)
1. a kind of dual fuel engine security system, which is characterized in that including GVU combustion gas valve terminal, two electric-controlled ball valves, bear
Pressure fan, double-wall pipe, double-walled expansion joint, differential pressure pickup, automatically controlled three-way device, nitrogen buffer tank, nitrogen making machine, revolution speed sensing
Device, positive pressure fan, automatically controlled butterfly valve, temperature sensor, gas detector, expansion joint and PLC control cabinet, combustion gas input terminal pass through
GVU combustion gas valve terminal is connected with double-wall pipe one end, and double-walled expansion joint, the double-wall pipe other end and automatically controlled threeway are equipped in double-wall pipe
Device first end is connected, and automatically controlled three-way device second end leads to the fuel inlet port of dual fuel engine, and nitrogen making machine and nitrogen are slow
It rushes tank to be connected, the connecting pipe at automatically controlled three-way device third end is connected by the second electric-controlled ball valve with nitrogen buffer tank；In double-walled
It manages and connects bleeder pipe by GVU combustion gas valve terminal one end, be equipped with the first electric-controlled ball valve, negative-pressure air fan and double-wall pipe in bleeder pipe
Outer tube communicate；Positive pressure fan by positive pressure fan branch by connecing on the gas exhaust piping of dual fuel engine, the positive pressure wind
Automatically controlled butterfly valve is equipped in machine branch, gas exhaust piping side is externally provided with explosion-proof valve；The outer tube wall of double-wall pipe is equipped with differential pressure pickup,
The spindle end of dual fuel engine is equipped with speed probe, and positive pressure fan bypass duct wall is equipped with temperature sensor, in double fuel
Gas detector is additionally provided on the upside of engine；Differential pressure pickup, speed probe, temperature sensor and gas detector difference
It is electrically connected with PLC control cabinet.
2. dual fuel engine security system as described in claim 1, it is characterised in that: negative pressure in the double-wall pipe outer tube
It is maintained at 0.5kPa.
3. dual fuel engine security system as described in claim 1, it is characterised in that: the gas detector is close to double combustions
Expect the air inlet side of engine, and is located at height H≤2m above dual fuel engine.
4. dual fuel engine security system as described in claim 1, it is characterised in that: the nitrogen in the nitrogen buffer tank
Pressure is maintained at 2.5 ~ 3.0MPa.
5. dual fuel engine security system as described in claim 1, it is characterised in that: the volume V of nitrogen buffer tank and double
The ratio between wall tube capacity product V1 is V/V1 > 2.
6. a kind of control method of dual fuel engine security system as described in claim 1, it is characterised in that: including following
The different step that A booting and B are shut down:
A booting
A1) with remaining natural gas in nitrogen purging double-wall pipe inner tube before dual fuel engine starting
Before dual fuel engine starting, instruction is issued by PLC control cabinet and is separately turned on the first electric-controlled ball valve and the second automatically controlled ball
Valve, and communicate automatically controlled three-way device first end and automatically controlled three-way device third end；Nitrogen successively passes through from nitrogen buffer tank
Two electric-controlled ball valves and automatically controlled three-way device first end start to purge inner tube 2 minutes of double-wall pipe, by natural gas remaining in inner tube
It is discharged from bleeder pipe by bleed outlet B；Subsequent PLC control cabinet issues instruction and simultaneously closes off the first electric-controlled ball valve and the second automatically controlled ball
Valve；
A2) negative-pressure air fan is opened after dual fuel engine starting
After dual fuel engine starting, PLC control cabinet issues instruction and opens negative-pressure air fan, establishes in the outer tube of double-wall pipe
The negative pressure of 0.5kPa is then evacuated by negative-pressure air fan and is discharged if any leakage natural gas；During dual fuel engine operation, bear
Pressure fan remains operational；
B shutdown
B1 two electric-controlled ball valves) are opened and close negative-pressure air fan
PLC control cabinet issues instruction, repeats A1) process, again simultaneously with remaining natural gas in the inner tube of nitrogen purging double-wall pipe
Close negative-pressure air fan；
B2 automatically controlled butterfly valve and positive pressure fan) are successively opened,
PLC control cabinet issues instruction, successively opens automatically controlled butterfly valve and positive pressure fan, positive pressure fan brings into operation, by gas exhaust piping
In remaining exhaust gas from C mouthfuls be discharged；Positive pressure fan remains operational closes after five minutes, is then shut off automatically controlled butterfly valve.
7. the control method of dual fuel engine security system as claimed in claim 6, it is characterised in that: the double fuel hair
Motivation exhaust temperature ranges are 250 DEG C~500 DEG C, when temperature sensor detects positive pressure fan branch close at positive pressure fan
When temperature is more than 200 DEG C, PLC control cabinet issues instruction, slowly starts positive pressure fan, reduces positive pressure fan branch by positive pressure blowing
The temperature on road.
8. the control method of dual fuel engine security system as claimed in claim 6, it is characterised in that: work as nitrogen buffer tank
When interior nitrogen pressure is lower than 2.5MPa, nitrogen making machine starts to nitrogen buffer tank automatically is filled with nitrogen.
9. the control method of dual fuel engine security system as claimed in claim 6, it is characterised in that: step A1) in it is double
Before engine fuel starting, first passing through manual mode makes PLC control cabinet issue instruction the second electric-controlled ball valve of unlatching, nitrogen buffer tank
Export the inner tube of nitrogen purging double-wall pipe；After dual fuel engine starting, judge that double fuel starts by speed probe
The working condition of machine, PLC control cabinet is transferred to the automatic working condition for issuing dependent instruction at this time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910680591.4A CN110242425A (en) | 2019-07-26 | 2019-07-26 | Dual fuel engine security system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910680591.4A CN110242425A (en) | 2019-07-26 | 2019-07-26 | Dual fuel engine security system and control method |
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| Publication Number | Publication Date |
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| CN110242425A true CN110242425A (en) | 2019-09-17 |
Family
ID=67893600
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| CN201910680591.4A Pending CN110242425A (en) | 2019-07-26 | 2019-07-26 | Dual fuel engine security system and control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031954A (en) * | 2020-09-08 | 2020-12-04 | 青岛双瑞海洋环境工程股份有限公司 | Double-wall pipe ventilation system of LNG power ship |
| CN112502864A (en) * | 2020-12-19 | 2021-03-16 | 中船动力有限公司 | Natural gas feeding pressure adjusting device of dual-fuel engine |
| CN112983685A (en) * | 2019-12-12 | 2021-06-18 | 中国船舶重工集团公司第七一一研究所 | Gas valve assembly |
| CN113277054A (en) * | 2021-06-29 | 2021-08-20 | 广船国际有限公司 | Marine methanol supply system |
| CN114109593A (en) * | 2021-12-16 | 2022-03-01 | 中船动力镇江有限公司 | Inert gas purging device for dual-fuel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015040267A1 (en) * | 2013-09-20 | 2015-03-26 | Wärtsilä Finland Oy | Integrated fuel storage system and gas valve unit |
| CN105334061A (en) * | 2015-10-26 | 2016-02-17 | 成都华气厚普机电设备股份有限公司 | Engine test-driving platform gas supply system |
| CN106437983A (en) * | 2016-10-12 | 2017-02-22 | 李伟 | Intelligent exhaust channel purging device |
| CN207348972U (en) * | 2017-09-21 | 2018-05-11 | 中海石油(中国)有限公司 | A kind of inert gas generator double fuel automatic switching control system |
| CN208330509U (en) * | 2018-05-23 | 2019-01-04 | 广州柴油机厂股份有限公司 | A kind of gas engine safety anti-explosive exhaust pipe |
| CN109708818A (en) * | 2019-03-19 | 2019-05-03 | 中船动力研究院有限公司 | A kind of gas machine air leakage detection system |
-
2019
- 2019-07-26 CN CN201910680591.4A patent/CN110242425A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015040267A1 (en) * | 2013-09-20 | 2015-03-26 | Wärtsilä Finland Oy | Integrated fuel storage system and gas valve unit |
| CN105334061A (en) * | 2015-10-26 | 2016-02-17 | 成都华气厚普机电设备股份有限公司 | Engine test-driving platform gas supply system |
| CN106437983A (en) * | 2016-10-12 | 2017-02-22 | 李伟 | Intelligent exhaust channel purging device |
| CN207348972U (en) * | 2017-09-21 | 2018-05-11 | 中海石油(中国)有限公司 | A kind of inert gas generator double fuel automatic switching control system |
| CN208330509U (en) * | 2018-05-23 | 2019-01-04 | 广州柴油机厂股份有限公司 | A kind of gas engine safety anti-explosive exhaust pipe |
| CN109708818A (en) * | 2019-03-19 | 2019-05-03 | 中船动力研究院有限公司 | A kind of gas machine air leakage detection system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983685A (en) * | 2019-12-12 | 2021-06-18 | 中国船舶重工集团公司第七一一研究所 | Gas valve assembly |
| CN112983685B (en) * | 2019-12-12 | 2024-04-26 | 中国船舶集团有限公司第七一一研究所 | Gas valve assembly |
| CN112031954A (en) * | 2020-09-08 | 2020-12-04 | 青岛双瑞海洋环境工程股份有限公司 | Double-wall pipe ventilation system of LNG power ship |
| CN112031954B (en) * | 2020-09-08 | 2021-10-15 | 青岛双瑞海洋环境工程股份有限公司 | Double-wall pipe ventilation system of LNG power ship |
| CN112502864A (en) * | 2020-12-19 | 2021-03-16 | 中船动力有限公司 | Natural gas feeding pressure adjusting device of dual-fuel engine |
| CN113277054A (en) * | 2021-06-29 | 2021-08-20 | 广船国际有限公司 | Marine methanol supply system |
| CN113277054B (en) * | 2021-06-29 | 2022-05-27 | 广船国际有限公司 | Marine methanol supply system |
| CN114109593A (en) * | 2021-12-16 | 2022-03-01 | 中船动力镇江有限公司 | Inert gas purging device for dual-fuel engine |
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