CN109630241A - A kind of diesel engine topside exhaust seawater cooling control method and system - Google Patents
A kind of diesel engine topside exhaust seawater cooling control method and system Download PDFInfo
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- CN109630241A CN109630241A CN201811261341.9A CN201811261341A CN109630241A CN 109630241 A CN109630241 A CN 109630241A CN 201811261341 A CN201811261341 A CN 201811261341A CN 109630241 A CN109630241 A CN 109630241A
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- cooling
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
- F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
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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
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
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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
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of diesel engine topside exhaust seawater cooling control method and system, which is vented salt water cooling system, including diesel engine controller, topside gas exhaust inspecting case, remote monitoring device and topside exhaust system.The present invention uses automatic control mode, it is easy to operate, high degree of automation, dump valve forms starting interlock by bleeder valve and the side of a ship in diesel engine and topside exhaust system, dump valve forms local closed loop and interlocks by topside exhaust cooling sea water pump and bleeder valve and the side of a ship, can accurately be controlled diesel engine and topside exhaust cooling sea water pump；And the aperture of seawater flow control valve can be automatically adjusted, to which the topside gas exhaust piping to the diesel engine being under different load carries out seawater cooling, the pipeline surface temperature of topside exhaust system is set to be maintained at 60 DEG C or less, the topside gas exhaust piping of diesel engine is cooled down by the way that spare seawater cooling line is arranged, can guarantee the normal operation of system.
Description
Technical field
Capital and interest are the divisional applications of the May in 2018 of application for a patent for invention 201810465098.6 on the 16th.
The present invention relates to diesel engine topsides to be vented Seawater Cooling Treatment Technology field, is vented more particularly to a kind of diesel engine topside
Seawater cooling control method and system.
Background technique
For diesel exhaust gas temperature generally at 550 DEG C or so, gas exhaust piping belongs to high temperature conduit.Conventional diesel exhaust gas
Pipeline is arranged in special chimney channel, and pipeline surface is thermally shielded cooling by coating high temperature resistant heat insulation material.Diesel engine
Topside exhaust mode is that topside exhaust system pipeline is arranged in engine room inside, and diesel exhaust is drained into the side of a ship by short tube by the side of a ship
Outside.In view of topside gas exhaust piping is numerous, arrangement space is extremely limited in cabin, coats centainly exhausted on the surface of gas exhaust piping
It is still cabin high temperature heat source after hot material, the operating ambient temperature often resulted in cabin substantially exceeds relevant regulatory requirements, into
And influence the normal operation of machine below deck equipment and the operation of staff.Therefore, to high-power diesel engine topside exhaust system pipe
The mode of cooling that road provides a kind of reasonable is particularly important.
Summary of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, design a kind of cooling control of diesel engine topside exhaust seawater
Method and system.
In order to achieve the above objectives, the technical scheme adopted by the invention is that:
A kind of diesel engine topside exhaust seawater cooling control method, specifically includes the following steps:
Step 1: the automatic control mode of selection topside gas exhaust inspecting case, and make bleeder valve, side of a ship side dump valve and seawater flow control
Valve processed restores to original state；
Step 2: pressing the starting button of diesel engine, dump valve by the bleeder valve and the side of a ship in the diesel engine and topside exhaust system
Starting interlock is formed, topside gas exhaust inspecting case is sent according to the open and-shut mode of dump valve by bleeder valve and the side of a ship to diesel engine controller
Order " ready to start ", diesel engine starting, while topside exhaust cooling sea water pump also starts, the topside is vented cooling sea water pump
Local closed loop interlocking is regular with being provided between dump valve by bleeder valve and the side of a ship；
Step 3: diesel engine controller sends the fuel-oil rack position signal of diesel engine to topside gas exhaust inspecting case, if fuel-oil rack
Position signal > 2%, topside gas exhaust inspecting case is according to fuel-oil rack position signal, seawaterline pressure signal and valve opening tune
The aperture of pitch curve adjusting seawater flow control valve；
Step 4: pressing the stop button of diesel engine, diesel engine controller sends the fuel oil tooth of diesel engine to topside gas exhaust inspecting case
Position signal, if fuel-oil rack position signal≤2%, topside gas exhaust inspecting case controls seawater flow control valve and closes, topside row
Gas cooling sea water pump is out of service, if fuel-oil rack position signal is 0%, topside gas exhaust inspecting case is delayed by 2 minutes closing sides of a ship
Dump valve simultaneously opens bleeder valve.
It further, further include step 3.1 between the step 3 and step 4: firstly, topside gas exhaust inspecting case connects in real time
Receive the temperature signal of the primary injection line rear end of the first temperature sensor detection, the secondary injection of second temperature sensor detection
The open and-shut mode feedback signal of dump valve by the temperature signal and bleeder valve and the side of a ship of pipeline rear end, if primary or secondary injection pipe
Road rear end temperature is greater than 60 DEG C or bleeder valve is in the open state or side of a ship side dump valve is in close state, then topside exhaust control
Case processed sends alarm signal to remote monitoring device, and operator is turned off manually bleeder valve, opens dump valve by the side of a ship, releases simultaneously
For dump valve respectively by its open and-shut mode feedback signal transmission to diesel engine controller, topside gas exhaust inspecting case releases bavin by valve and the side of a ship
The starting interlock of dump valve by oil machine and bleeder valve and the side of a ship；Then, diesel engine is started, spare seawater cooling line is opened, passes through
Cut-off valve opening on spare seawater cooling line adjusts refrigerated sea water flow.
Further, the topside gas exhaust inspecting case sends the specific steps of order " ready to start " to diesel engine controller
Are as follows: firstly, diesel engine controller sends start request signal to topside gas exhaust inspecting case, topside gas exhaust inspecting case is asked according to starting
It asks signal control to close bleeder valve and opens dump valve by the side of a ship, while topside gas exhaust inspecting case receives dump valve by bleeder valve and the side of a ship
Open and-shut mode feedback signal；Then, topside gas exhaust inspecting case judge bleeder valve open and-shut mode feedback signal whether be close,
Whether the open and-shut mode feedback signal of dump valve is opening by the side of a ship, if so, topside gas exhaust inspecting case is sent out to diesel engine controller
Send order " ready to start "；Otherwise, the starting interlock of diesel engine Yu topside exhaust system can not be released, diesel engine can not start.
Further, the local closed loop interlocking rule are as follows: topside gas exhaust inspecting case receives dump valve by bleeder valve and the side of a ship
Open and-shut mode feedback signal, if in diesel engine operational process, the open and-shut mode feedback signal of bleeder valve be open or the side of a ship by row
The open and-shut mode feedback signal of valve is to close out, then topside gas exhaust inspecting case control topside exhaust cooling sea water pump is out of service,
Diesel engine safety parking.
Further, the valve opening adjustment curve refers to the valve opening of seawater flow control valve and the combustion of diesel engine
Relation curve between oily rack position and seawaterline pressure value.
Further, the generation step of the valve opening adjustment curve are as follows: be vented seawater cooling system in diesel engine topside
Before system operation, debugging test, the detailed process of the debugging test are carried out to the system are as follows: firstly, adjusting diesel engine fuel oil
Rack position, then, staff open seawater flow control valve to appropriate aperture, after making primary or secondary injection line manually
It holds temperature to be no more than 60 DEG C, records the valve opening of seawater flow control valve and seawaterline pressure at this time, the fuel-oil rack position
Set one group of tune-up data of valve opening and seawaterline stress structure of seawater flow control valve corresponding thereto；Repeat
Multiple debugging test obtains multiple groups tune-up data, carries out processing analysis to all groups of tune-up datas and obtains generation valve opening tune
Pitch curve.
Further, the original state of the bleeder valve is in an open state, dump valve and seawater flow control valve by the side of a ship
Original state is in off state.
A kind of diesel engine topside exhaust salt water cooling system, including diesel engine controller, topside gas exhaust inspecting case, long-range prison
Device and topside exhaust system are surveyed, the topside exhaust system includes topside exhaust cooling sea water pump, seawater flow control valve, uses
The seawater pressure table and Sea-water pressure sensor of seawater pipeline pressure after detecting seawater flow control valve, primary ejector,
The first temperature sensor of primary injection line rear end temperature, secondary injection line are vented, for detecting the side of a ship for detecting topside
Side is vented second temperature sensor, bleeder valve, side of a ship side dump valve and the spare seawater cooling tube of secondary injection line rear end temperature
Road, the primary ejector are connected by the branch pipe all the way drawn from its sea intake with secondary injection line, the sea
The temperature of water pressure table and the signal output end of Sea-water pressure sensor, the first temperature sensor and second temperature sensor
Signal output end is connect with the control signal input of topside gas exhaust inspecting case respectively, and topside is vented cooling sea water pump, seawater stream
Dump valve is electrically connected with topside gas exhaust inspecting case respectively by control valve, bleeder valve and the side of a ship；
The diesel engine controller, for receiving the switch state feedback signal of dump valve by bleeder valve and the side of a ship, topside exhaust control
The command signal of case processed, and fuel-oil rack position signal is sent to topside gas exhaust inspecting case；The topside gas exhaust inspecting case, is used for
To diesel engine controller send diesel engine start signal and stop signal and according to the start-stop signal of diesel engine control bleeder valve
With the opening and closing of dump valve by the side of a ship, the start-stop of cooling sea water pump is vented according to the open and close control topside of dump valve by bleeder valve and the side of a ship,
The valve opening of fuel-oil rack position signal and seawaterline pressure signal control seawater flow control valve based on the received, and to
The alarm signal that remote monitoring device is sent；The remote monitoring device, for receiving the alarm of topside gas exhaust inspecting case transmission
Signal.
Further, the primary ejector includes primary injection line and is uniformly arranged on primary injection line inner wall
Nozzle, the primary injection line is double-layer tube wall, and primary ejector and secondary injection line are all made of titanium alloy material system
At.
Further, spare seawater cooling line all the way is additionally provided at the sea intake of the primary ejector, it is described
Shut-off valve is fixed on spare seawater cooling line.
Positive beneficial effect of the invention:
1, diesel engine topside exhaust seawater cooling control method of the invention is easy to operate using automatic control mode, from
Dynamicization degree is high.Dump valve forms starting interlock, topside exhaust sea by bleeder valve and the side of a ship in diesel engine and topside exhaust system
Dump valve forms local closed loop and interlocks by water cooling pump and bleeder valve and the side of a ship, can be vented cooling sea water pump to diesel engine and topside
Accurately controlled；And topside gas exhaust inspecting case can be according to fuel-oil rack position signal, seawaterline pressure signal and valve
Aperture regulation curve automatically adjusts the aperture of seawater flow control valve, so that the topside to the diesel engine being under different load is arranged
Air pipe carries out seawater cooling, and the pipeline surface temperature of topside exhaust system is made to be maintained at 60 DEG C hereinafter, and can pass through temperature
Degree sensor is in real time monitored the temperature of topside gas exhaust piping.
2, in system operation, topside gas exhaust inspecting case can be according to received feedback signal or various detections
Signal judges whether to send alarm signal to remote monitoring device, after sending alarm signal to remote monitoring device, operation
Personnel manually control the system, open spare seawater cooling line, carry out seawater cooling, energy to the topside gas exhaust piping of diesel engine
Enough guarantee the normal operation of system.
Detailed description of the invention
Fig. 1 is the control principle block diagram that diesel engine topside of the present invention is vented salt water cooling system.
Fig. 2 is the flow chart that diesel engine topside of the present invention is vented seawater cooling control method.
Fig. 3 is the flow chart under failure contingency mode.
Fig. 4 is the system construction drawing of topside exhaust system.
The concrete meaning of figure label are as follows: 1 be remote monitoring device, 2 be diesel engine controller, 3 be topside gas exhaust inspecting
Case, 4 be topside exhaust cooling sea water pump, 5 be seawater flow control valve, 6 be seawater pressure table, 7 be Sea-water pressure sensor, 8
It is secondary injection line for primary ejector, 9,10 be the first temperature sensor, 11 be second temperature sensor, 12 is spare sea
Water composite cooling pipe road, 13 be bleeder valve, 14 be dump valve by the side of a ship, 15 be branch pipe, 16 be primary injection line, 17 be nozzle, 18 be
Diesel engine.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by shown in the accompanying drawings specific
Embodiment describes the present invention.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit model of the invention
It encloses.In addition, in the following description, descriptions of well-known structures and technologies are omitted, it is of the invention to avoid unnecessarily obscuring
Concept.
Embodiment is described with reference to Fig. 1, and diesel engine topside exhaust seawater cooling control method of the invention is for cooling down
Diesel engine topside gas exhaust piping.Diesel engine topside of the invention is vented salt water cooling system, including diesel engine controller 2, topside
Gas exhaust inspecting case 3, remote monitoring device 1 and topside exhaust system.The topside exhaust system includes that topside exhaust seawater is cooling
Pump 4, seawater flow control valve 5, seawater pressure table 6, Sea-water pressure sensor 7, primary ejector 8, the first temperature sensor 10,
Secondary injection line 9, second temperature sensor 11, bleeder valve 13, side of a ship side dump valve 14 and spare seawater cooling line 12.It is described
The signal output end of seawater pressure table 6 and Sea-water pressure sensor 7, the first temperature sensor 10 and second temperature sensor
11 temperature signal output end is connect with the control signal input of topside gas exhaust inspecting case 3 respectively, and it is cooling that topside is vented seawater
Dump valve 14 is electrically connected with topside gas exhaust inspecting case 3 respectively by pump 4, seawater flow control valve 5, bleeder valve 13 and the side of a ship.This implementation
Dump valve 14 is operated pneumatic valve by bleeder valve 13 and the side of a ship in example, both be can be automatically controled, also manually controllable, is arranged according to topside
The switching signal that gas control cabinet 3 provides realizes the opening and closing of dump valve 14 by bleeder valve 13 or the side of a ship, while can feed back
The open and-shut mode feedback signal of dump valve 14 is used for control system by bleeder valve 13 or the side of a ship.
The diesel engine controller 2, for receiving the switch state feedback signal of dump valve 14, the side of a ship by bleeder valve 13 and the side of a ship
The command signal of side gas exhaust inspecting case 3, and fuel-oil rack position signal is sent to topside gas exhaust inspecting case 3；The topside exhaust
Control cabinet 3 is believed for the start signal and stop signal to the transmission diesel engine of diesel engine controller 2 and according to the start-stop of diesel engine
The opening and closing of dump valve 14, is arranged according to the open and close control topside of dump valve 14 by bleeder valve 13 and the side of a ship by number control bleeder valve 13 and the side of a ship
The start-stop of gas cooling sea water pump 4, fuel-oil rack position signal and seawaterline pressure signal control seawater flow based on the received
The valve opening of control valve, and alarm signal is sent to remote monitoring device；The remote monitoring device, for receiving topside row
The alarm signal that gas control cabinet is sent.
It is provided with two-way seawater cooling line in the diesel engine topside exhaust salt water cooling system of the application, all the way for from sea
The seawater cooling line that bottom door is drawn, the side of the seawater cooling line water inlet are provided with topside exhaust cooling sea water pump 4, separately
Side is provided with seawater flow control valve 5, is then connected with the seawater inlet port of primary ejector 8；Another way is spare sea
Water composite cooling pipe road 12, spare seawater cooling line 12 are arranged at the seawater inlet port of primary ejector 8, spare seawater cooling tube
Shut-off valve is fixed on road 12.When topside exhaust cooling sea water pump 4 breaks down, it is right that spare seawater cooling line 12 can be used
Gas exhaust piping is cooled down, and can pass through the shut-off valve on spare seawater cooling line to the control of seawater flow and pressure
Aperture is adjusted.
Topside exhaust cooling sea water pump 4 in the present embodiment is according to real ship experience and seawater spray cooling flow and exhaust
The calculating of line temperature curve selects its flow for 14.2m3/ h, since the seawaterline pressure after seawater flow control valve 5 needs greatly
In being equal to 0.15Mpa and pressure-drop in pipeline loss requirement, selecting the lift of pump is 21.2m, and therefore, topside is vented cooling sea water pump
4 select flow for 14.2m3/ h, the electric centrifugal pump that lift is 21.2m, input power interface: three-phase AC380V, 50Hz,
Power 2.2kW.Topside exhaust cooling sea water pump 4 can automatically control or manually control, and with by bleeder valve 13 and the side of a ship
Local closed loop interlocking is formed between dump valve 14, to control the start-stop of topside exhaust cooling sea water pump 4.
Seawater flow control valve 5 is electrically operated valve, can automatically control or manually control, by topside gas exhaust inspecting case
3 prelist the seawater after control logic (i.e. the valve opening adjustment curve of PLC storage inside), seawater flow control valve 5 according to PLC
Line pressure signal and diesel engine fuel oil rack position signal comprehensive descision adjust the opening ratio of seawater flow control valve (5)
Example.The input power interface of seawater flow control valve 5 is single-phase AC220V, 50Hz, power 120W.Seawater flow control valve 5
Seawaterline pressure signal afterwards is measured by seawater pressure table and Sea-water pressure sensor, seawater pressure table and seawater pressure sensing
Device is fixed on the tube wall of the seawater cooling line after seawater flow control valve 5, and the range of seawater pressure table 6 is 0-0.6MPa,
The range of Sea-water pressure sensor 7 is 0-1.0MPa.
The primary ejector 8 is connected by the branch pipe all the way 15 drawn from its sea intake with secondary injection line 9
It is logical.Primary ejector 8 in the present embodiment includes primary injection line 16 and nozzle 17, and the primary injection line 16 is bilayer
Tube wall is uniformly fixed with 6 nozzles 17 on the circumferencial direction of inner wall.Seawater enters the bilateral tube wall of primary ejector 8, passes through
It is cooling to carry out seawater to diesel exhaust gas for 6 internal injection lines and corresponding nozzle.In order to guarantee gas exhaust piping
Antiseptic property, primary ejector 8 and secondary injection line 9 are all made of titanium alloy material and are made.It is solid on the tube wall of primary ejector 8
Surely there is the first temperature sensor 10, second temperature sensor 11, the first temperature sensing are fixed on the tube wall of secondary injection line 9
Device 10 is vented primary injection line rear end temperature for detecting topside, and second temperature sensor 11 is secondary for detecting topside exhaust
Injection line rear end temperature, the first temperature sensor 10 and second temperature sensor 11 are PT100 sensor, and range is 0-
600℃。
Diesel engine topside exhaust salt water cooling system of the invention is when the gas exhaust piping to diesel engine cools down, the side of a ship
Side is vented seawater cooling control method, specifically includes the following steps:
Step 1: the automatic control mode of selection topside gas exhaust inspecting case 3, and make bleeder valve 13, side of a ship side dump valve 14 and seawater stream
Control valve 5 restores to original state.The original state of the bleeder valve is in an open state, dump valve and seawater flow control by the side of a ship
The original state of valve processed is in off state.
Step 2: press the starting button of diesel engine 18, the diesel engine 18 in topside exhaust system bleeder valve 13 and
Dump valve 14 forms starting interlock by the side of a ship, and topside gas exhaust inspecting case 3 is according to the open and-shut mode of dump valve 14 by bleeder valve 13 and the side of a ship
Order " ready to start " is sent to diesel engine controller 2, diesel engine 18 starts, while topside exhaust cooling sea water pump 4 also starts.
The topside gas exhaust inspecting case 3 sends the specific steps of order " ready to start " to diesel engine controller 2 are as follows: first
First, diesel engine controller 2 sends start request signal to topside gas exhaust inspecting case 3, and topside gas exhaust inspecting case 3 is according to start request
Signal control closes bleeder valve 13 and opens dump valve 14 by the side of a ship, while topside gas exhaust inspecting case 3 receives by bleeder valve 13 and the side of a ship
The open and-shut mode feedback signal of dump valve 14；Then, topside gas exhaust inspecting case 3 judges the open and-shut mode feedback signal of bleeder valve 13
Whether be closing, whether the open and-shut mode feedback signal of dump valve 14 is opening by the side of a ship, if so, releasing diesel engine 18 and topside
The starting interlock of exhaust system, topside gas exhaust inspecting case 3 send order " ready to start ", diesel engine control to diesel engine controller 2
Device 2 processed controls diesel engine 18 and starts；Otherwise, the starting interlock of diesel engine Yu topside exhaust system can not be released, diesel engine can not
It starts.
Local closed loop is provided between dump valve 14 by the topside exhaust cooling sea water pump 4 and bleeder valve 13 and the side of a ship to interlock
Rule.The local closed loop interlocking rule are as follows: topside gas exhaust inspecting case 3 receives the opening and closing shape of dump valve 14 by bleeder valve 13 and the side of a ship
State feedback signal, if in diesel engine operational process, the open and-shut mode feedback signal of bleeder valve 13 is dump valve 14 by opening or the side of a ship
Open and-shut mode feedback signal be close, then topside gas exhaust inspecting case 3 control topside exhaust cooling sea water pump 4 it is out of service, bavin
18 secure parking of oil machine.
Step 3: diesel engine controller 2 sends the fuel-oil rack position signal of diesel engine 18 to topside gas exhaust inspecting case 3, if
Fuel-oil rack position signal > 2%, topside gas exhaust inspecting case 3 is according to fuel-oil rack position signal, seawaterline pressure signal and valve
The aperture of door aperture regulation curve adjustment seawater flow control valve；
The valve opening adjustment curve refers to the valve opening of seawater flow control valve 5 and the fuel-oil rack position of diesel engine 18
Relation curve between seawaterline pressure value.The generation step of the valve opening adjustment curve are as follows: in diesel engine topside
It is vented before salt water cooling system operation, debugging test, the detailed process of the debugging test is carried out to the system are as follows: firstly,
Diesel engine fuel oil rack position is adjusted, then, staff opens seawater flow control valve 5 to appropriate aperture manually, makes primary
Or secondary injection line rear end temperature is no more than 60 DEG C, records the valve opening and seawaterline of seawater flow control valve 5 at this time
Pressure, the valve opening of the seawater flow control valve of the fuel-oil rack position corresponding thereto and one group of seawaterline stress structure
Tune-up data；Repeat multiple debugging test, obtain multiple groups tune-up data, processing analysis is carried out to all groups of tune-up datas and is obtained
Valve opening adjustment curve must be generated.
In system operation, the primary injection of 3 the first temperature sensor of real-time reception 10 of topside gas exhaust inspecting case detection
The temperature signal and bleeder valve for the secondary injection line rear end that the temperature signal of pipeline rear end, second temperature sensor 11 detect
13 and the side of a ship by dump valve 14 open and-shut mode feedback signal, and the signal detected is analyzed and determined, if primary or secondary
Injection line rear end temperature is greater than 60 DEG C or bleeder valve 13 is in the open state or side of a ship side dump valve 14 is in close state, then
Topside gas exhaust inspecting case 3 sends alarm signal to remote monitoring device 1, after the alarm signal includes seawater flow control valve 5
Seawaterline pressure, the first temperature sensor 10 detection temperature signal, second temperature sensor 11 detect temperature signal,
The percent travel of seawater flow control valve 5 shows, the open and-shut mode of dump valve 14 such as shows at the signals by bleeder valve 13 and the side of a ship.So
Afterwards, operator is turned off manually bleeder valve 13, opens dump valve 14 by the side of a ship, while dump valve 14 respectively will by bleeder valve 13 and the side of a ship
Its open and-shut mode feedback signal transmission to diesel engine controller 2, topside gas exhaust inspecting case 3 release diesel engine 18 and bleeder valve 13 and
The starting interlock of dump valve 14 by the side of a ship；Then, diesel engine 18 is started, spare seawater cooling line 12 is opened, passes through spare seawater
Cut-off valve opening on cooling line 12 adjusts refrigerated sea water flow.If topside exhaust system is without failure or each sensor
Monitoring, alarming signal, then system operate normally, after run a period of time, execution step 4.
Step 4: pressing the stop button of diesel engine 18, diesel engine controller 2 sends diesel engine to topside gas exhaust inspecting case 3
Fuel-oil rack position signal, if fuel-oil rack position signal≤2%, topside gas exhaust inspecting case 3 control seawater flow control valve 5
It closes, it is out of service that topside is vented cooling sea water pump 4, if fuel-oil rack position signal is 0%, the delay of topside gas exhaust inspecting case 3
2 minutes closing sides of a ship side dump valves 14 simultaneously open bleeder valve 13.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that；Still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (3)
1. a kind of diesel engine topside is vented salt water cooling system, which is characterized in that be vented including diesel engine controller (2), topside
Control cabinet (3), remote monitoring device (1) and topside exhaust system, the topside exhaust system include that topside exhaust seawater is cooling
Pump (4), seawater flow control valve (5), the seawater pressure table (6) for detecting the seawater pipeline pressure after seawater flow control valve
With Sea-water pressure sensor (7), primary ejector (8), first for detecting topside exhaust primary injection line rear end temperature
Temperature sensor (10), secondary injection line (9), the second temperature for being vented secondary injection line rear end temperature for detecting topside
Sensor (11), bleeder valve (13), side of a ship side dump valve (14) and spare seawater cooling line (12), the primary ejector (8)
It is connected by the branch pipe all the way (15) drawn from its sea intake with secondary injection line (9), the seawater pressure table (6)
With the signal output end of Sea-water pressure sensor (7), the first temperature sensor (10) and second temperature sensor (11)
Temperature signal output end is connect with the control signal input of topside gas exhaust inspecting case (3) respectively, and topside is vented cooling sea water pump
(4), dump valve (14) is electrically connected with topside gas exhaust inspecting case (3) respectively by seawater flow control valve (5), bleeder valve (13) and the side of a ship
It connects；
The diesel engine controller (2), for receive the switch state feedback signal of dump valve (14) by bleeder valve (13) and the side of a ship,
The command signal of topside gas exhaust inspecting case (3), and fuel-oil rack position signal is sent to topside gas exhaust inspecting case (3)；
The topside gas exhaust inspecting case (3), for sending the start signal and stop signal of diesel engine to diesel engine controller (2)
And the opening and closing of dump valve (14) by bleeder valve (13) and the side of a ship is controlled according to the start-stop signal of diesel engine, according to row by bleeder valve and the side of a ship
The open and close control topside of valve is vented the start-stop of cooling sea water pump (4) out, based on the received fuel-oil rack position signal and seawater pipe
Road pressure signal controls the valve opening of seawater flow control valve (5), and the alarm signal sent to remote monitoring device；It is described
Remote monitoring device (1), for receiving the alarm signal of topside gas exhaust inspecting case transmission.
2. diesel engine topside according to claim 1 is vented salt water cooling system, which is characterized in that the primary ejector
(8) including the nozzle (17) that primary (16) at injection line and is uniformly arranged on primary injection line inner wall, the primary injection
Pipeline (16) is double-layer tube wall, and primary ejector (8) and secondary injection line (9) are all made of titanium alloy material and are made.
3. diesel engine topside according to claim 1 is vented salt water cooling system, which is characterized in that the primary ejector
(8) it is additionally provided with spare seawater cooling line (12) all the way at sea intake, consolidates on the spare seawater cooling line (12)
Surely there is shut-off valve.
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| CN201810465098.6A CN108708779B (en) | 2018-05-16 | 2018-05-16 | Diesel engine side exhaust seawater cooling control method and system |
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| CN109630241B (en) * | 2018-05-16 | 2021-04-23 | 沪东中华造船(集团)有限公司 | Diesel engine side exhaust seawater cooling control method and system |
| CN112503185A (en) * | 2020-09-21 | 2021-03-16 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Self-adaptive leak-proof side valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108708779A (en) | 2018-10-26 |
| CN108708779B (en) | 2020-04-14 |
| CN109630241B (en) | 2021-04-23 |
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