CN101333957B - Ship diesel closed type cooling water system risk prealarming method - Google Patents
Ship diesel closed type cooling water system risk prealarming method Download PDFInfo
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- CN101333957B CN101333957B CN2008100540678A CN200810054067A CN101333957B CN 101333957 B CN101333957 B CN 101333957B CN 2008100540678 A CN2008100540678 A CN 2008100540678A CN 200810054067 A CN200810054067 A CN 200810054067A CN 101333957 B CN101333957 B CN 101333957B
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Abstract
The invention relates to a ship closed cooling water system risk early warning method; when the ship closed cooling water system is discovered to have abnormal situations; the risk early warning is processed according to the following steps that step one, the malfunction mode is determined whether the malfunction mode is the low pressure fresh water, the high temperature fresh water, low pressure seawater engine, the high pressure fresh water or the high pressure seawater according to the device information acquired in real-time through the sensors installed in the survey points of the ship lubricating oil system, and the operation and malfunction information of the device acquired through the manual examination; step two, the risk early warning flow is determined according to the malfunction mode type; the risk early warning is executed according to the corresponding diagnosis flow. The ship closed cooling water system risk early warning method can provide reasonable evidence for the daily maintenance and repairing for the ship closed cooling water system after the risk early warning method is applied.
Description
Technical field
The invention belongs to faulty equipment diagnostic techniques field, relate to a kind of ship's fitting method for prewarning risk.
Background technique
Ship diesel is in operation process, and the exothermic 20%-30% that burns need pass through parts such as cylinder, cylinder head and piston and loose to the external world, therefore needs cooling water recirculation system to guarantee the normal equilibrium temperature of heating part.Cooling water system commonly used at present is a closed cooling water system, and it directly cools off diesel engine with fresh water usually, uses cooled with seawater fresh water and other heat transport fluid (lubricating oil, pressurized air etc.) then.
Because each assembly of cooling water system is in for a long time under the condition of high temperature and moves, so it corrodes and scale formation happens occasionally, and this will influence the normal operation on diesel engine and even naval vessel, even warship safety is brought very big influence.Therefore, when strengthening naval vessel turbine equipment management, must monitor, and determine its Risk-warning flow process the complex art state of naval vessel cooling water system.And present domestic Shipping Company still is according to the naval vessel engine logbook, and crewman's technical experience has bigger subjectivity to cooling system enforcement assessment of failure and diagnosis.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective of prior art, set up the method for prewarning risk of a cover, realize Risk-warning and state estimation the ship diesel closed cooling water system at the ship diesel closed cooling water system.After method of the present invention comes into operation, can provide rational foundation for running repairs, the maintenance of ship diesel closed cooling water system.
The present invention adopts following technological scheme:
A kind of ship diesel closed type cooling water system risk prealarming method, finding that the ship diesel closed cooling water system occurs carrying out Risk-warning according to the following step when unusual:
The first step: the fresh water of cooling water system advanced machine pressure, fresh water out-of-machine temperature, seawater advance machine pressure, seawater out-of-machine temperature parameter is gathered, and parameter threshold demarcated, when above-mentioned monitoring parameter exceeds threshold range, unusual according to monitoring parameter determines that fault mode is that fresh water pressure is low, fresh water temperature height, seawater pressure is low, ocean temperature is high, any in the fresh water pressure height, the high fault mode of seawater pressure;
Second step: determine the Risk-warning flow process at the fault mode type that takes place,
If determined fault type is the low fault mode of fresh water pressure, then carry out Risk-warning according to the following step:
(1) checks whether fault of fresh water pump, if break down, whether check in the fresh water pump entrained gas earlier, whether seal arrangement breaks causes leaking, if no above-mentioned phenomenon judges that then fresh water pump is damaged;
(2) check whether the swelling water tank water yield is on the low side,, then judge to expand the not enough fault of water volume in water tank if on the low side;
(3) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(4) seal arrangement of the checking fresh water line inefficacy of whether breaking, whether break the pipeline weld joint, judges whether fault of fresh water line;
(5) check whether pressure monitoring devices lost efficacy,, judge that then pressure monitoring devices breaks down if lost efficacy, otherwise, forwarded for (3) step to reexamine;
If determined fault type is the high commentaries on classics of a fresh water temperature fault mode, then carry out Risk-warning according to the following step:
(11) check at first whether fresh water pressure is normal, and whether seawater pressure is unusual, and whether delivery temperature is unusual, if these abnormal parameters are then at first investigated the phenomenon that causes these abnormal parameters;
(12) check whether fault of duct thermostat, if judge that then duct thermostat is malfunctioning;
(13) check whether fault of temperature monitoring apparatus;
(14) check whether swelling water tank outwards emits hot gas, if judge that then freshwater system steam can't get rid of
(15) check whether swelling water tank outwards emits fresh water, if then judge to occur that the cylinder head mat damages or cylinder sleeve exists crackle or trachoma;
(16) check whether the swelling water tank water yield is on the low side,, then judge to expand the not enough fault of water volume in water tank if on the low side;
(17) check whether fault of fresh water pump, if break down, whether check in the fresh water pump entrained gas earlier, whether seal arrangement breaks causes leaking, if no above-mentioned phenomenon judges that then fresh water pump is damaged;
(18) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(19) seal arrangement of the checking fresh water line inefficacy of whether breaking, whether break the pipeline weld joint, judges whether fault of fresh water line;
(20) if fault is not all found in the inspection of above each step, judge that then the main frame body breaks down;
Hang down fault mode if determined fault type is a seawater pressure, then carry out Risk-warning according to the following step:
(1) checks whether fault of sea water pump, if break down, whether check in the sea water pump entrained gas earlier, whether seal arrangement breaks causes leaking, if no above-mentioned phenomenon judges that then sea water pump is damaged;
(2) check whether Sea Chest is opened;
(3) check whether fault of sea water filter, filter screen whether occurs and stop up or break;
(4) check whether fault of instrument;
(5) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(6) seal arrangement of checking seawaterline inefficacys of whether breaking, whether break the pipeline weld joint, judges whether fault of seawaterline, if do not break down, then turns to (5) to go on foot again and investigate;
If determined fault type is the high fault mode of fresh water pressure, then carry out Risk-warning according to the following step:
(1) checks whether fault of monitoring equipment;
(2) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(3) seal arrangement of checking fresh water line inefficacys of whether breaking, whether break the pipeline weld joint, judges whether fault of fresh water line, if do not break down, then turns to (2) to go on foot again and investigate;
If determined fault type is the high fault mode of ocean temperature, then carry out Risk-warning according to the low fault mode of seawater pressure;
If determined fault type is the high fault mode of seawater pressure, then carry out Risk-warning according to the following step:
(1) checks whether fault of monitoring equipment;
(2) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(3) seal arrangement of checking seawaterline inefficacys of whether breaking, whether break the pipeline weld joint, judges whether fault of seawaterline, if do not break down, then turns to (2) to go on foot again and investigate.
The present invention is applied to the Risk-warning of ship diesel closed cooling water system, by the actual operating state of each equipment being monitored the report fault mode that provides, Risk-warning flow process in conjunction with the present invention's proposition, the operating fault of diesel engine closed cooling water system is judged identification, can make the situation of the Risk-warning of ship diesel closed cooling water system being broken away from main dependence maintainer's technical experience, can improve regular maintenance, the managerial skills on naval vessel, guarantee its safety.Simultaneously, utilize said method to carry out software development and use, can improve scientific, the level of IT application of ship-handling.
Description of drawings
Fig. 1 salt water cooling system fundamental diagram;
Fig. 2 cooling system of fresh water fundamental diagram;
Fig. 3 fresh water pressure low-risk early warning flow process;
Fig. 4 fresh water temperature excessive risk early warning flow process;
Fig. 5 seawater pressure low-risk early warning flow process;
Fig. 6 fresh water pressure excessive risk early warning flow process;
Fig. 7 seawater pressure excessive risk early warning flow process.
Embodiment
As a rule, ship diesel closed cooling system (is example with the middling speed machine) comprises following assembly: machine band fresh water cooling waterpump, machine band cooled with seawater water pump, fresh water cooling water stand by pump, cooled with seawater water stand by pump, fresh water line, seawaterline, all kinds of valve, sea water filter, fresh-water cooler, duct thermostat, swelling water tank.
Its working principle is as follows, and fresh water forms the circulation of sealing between pipeline at the cooling space of diesel engine.Be it to be cooled off after fresh water is heated by another set of seawater circulation system.Promptly advancing has also had two cooling water circulating systems in the safeguards system, so the pipe-line system more complicated, and parts are many.Because seawater directly do not contact with diesel engine, the cooling diesel engine is directly used fresh water, thereby diesel engine can turn round under than higher state at cooling water temperature, has improved Economy.
Cylinder cooling water circulates at a closed circuit, and is cooled off in fresh-water cooler.
According to the requirement of motor, cooling water can be by machine band or centrifugal water pump independently, in the water cavity by intake pipe input cylinder block.Water cavity is almost as a ring, round each cylinder liner top.Between each water cavity connecting tube is arranged.
The water that flows out in each cylinder enters cylinder head by cooling water passage, and midfeather and rib are with the water heating part that led, to guarantee good heat radiation.Cooling water flows to another cylinder head by the nipple between the cylinder head from a cylinder head, flows through whole cylinder head successively, until the coolant outlet of motor end.Cooling water passes through thermoregulator, cooler then, or flow back into centrifugal water pump by bypass line.The cooling water loop has a pipe to be connected to swelling water tank, is installed in coolant outlet.The thermometer in outlet port can be read the cooling water water temperature.At the lowest part of cooling system, the cock of a discharging cooling water is arranged.For draining the residue cooling water in the cylinder block cooling water chamber, must screw out plug screw.According to engine model, the auxiliary instrumentation of various automatic monitoring cooling water pressures and temperature can be installed.Closed cooling water system fundamental diagram commonly used as shown in Figure 1, 2.
Each parameter of cooling water system etc. is gathered, and parameter threshold is demarcated, when above-mentioned monitoring parameter exceeds threshold range, unusual according to monitoring parameter determined fault mode.
The cooling system monitoring parameter should comprise at least:
The fault signature phenomenon different according to cooling system, determine its corresponding fault diagnosis flow scheme:
1) fresh water pressure reduces
Reduce (fresh water, ocean temperature all can correspondingly raise at this moment) as cooling system fresh water pressure, can carry out inspection step, to determine the source of trouble as Fig. 3.
2) the fresh water temperature raises
Raise as cooling system fresh water temperature), can carry out inspection step as shown in Figure 4, to determine the source of trouble and the order of severity thereof.
3) seawater pressure reduces
Reduce (fresh water, ocean temperature all can correspondingly raise at this moment) as the cooling system seawater pressure, can carry out inspection step as shown in Figure 5, to determine the source of trouble and the order of severity thereof.
4) ocean temperature raises
When ocean temperature raise, fault diagnosis flow scheme was identical with seawater pressure reduction fault diagnosis flow scheme.
5) fresh water pressure raises
Raise (fresh water, ocean temperature all can correspondingly raise at this moment) as cooling system fresh water pressure, can carry out inspection step, to determine the source of trouble and the order of severity thereof as Fig. 6.
6) seawater pressure is higher
Raise (fresh water, ocean temperature all can correspondingly raise at this moment) as the cooling system seawater pressure, can carry out inspection step, to determine the source of trouble and the order of severity thereof as Fig. 7.
Fault diagnosis example below in conjunction with Fig. 4 and fresh water temperature drift is further described the present invention.
As naval vessel cooling system fresh water temperature drift,, should implement fault diagnosis in the following order then according to shown in Figure 4:
(1) fresh water pressure, seawater pressure and delivery temperature inspection
When the fresh water out-of-machine temperature raises, at first should check the pressure of fresh water, cooled with seawater water, unusual as circulating pressure, then jump to corresponding fault diagnosis module.In addition, also tackle delivery temperature and monitor, because cylinder combustion unusually also can cause the rising of water temperature.
(2) check whether thermoregulator lost efficacy
Test mode:
Fault suggestion and measure: change or overhauled
(3) check whether temperature monitoring equipment lost efficacy
Fault suggestion and measure: change or repair
(4) check whether swelling water tank outwards emits hot gas
It is characterized in that the cylinder head steam hole stops up, machine temperature obviously raises, and water tank outwards emits hot water in a large number.
This fault suggestion and measure: get rid of the steam in the freshwater system, and keep the cylinder head steam hole unimpeded
(5) check whether swelling water tank still outwards emits fresh water
Behind the steam, still outwards emit fresh water as swelling water tank in the eliminating freshwater system, fault is likely that the cylinder head mat damages or cylinder is with crackle, trachoma.
Fault suggestion and measure: change the cylinder head mat or change cylinder sleeve.
(6) check whether fault (ditto described) of fresh water pump
(7) check whether all kinds of valves lost efficacy
The fault suggestion and measure:
(8) check fresh water line and jointing fault (ditto described)
(9) main frame body fault
This fault needs the professional workforce that main frame is started shooting to repair or check and can solve.
Claims (1)
1. a ship diesel closed type cooling water system risk prealarming method is characterized in that, is finding that the ship diesel closed cooling water system occurs carrying out Risk-warning according to the following step when unusual:
The first step: the fresh water of cooling water system advanced machine pressure, fresh water out-of-machine temperature, seawater advance machine pressure, seawater out-of-machine temperature parameter is gathered, and parameter threshold demarcated, when above-mentioned monitoring parameter exceeds threshold range, unusual according to monitoring parameter determines that fault mode is that fresh water pressure is low, fresh water temperature height, seawater pressure is low, ocean temperature is high, any in the fresh water pressure height, the high fault mode of seawater pressure;
Second step: determine the Risk-warning flow process at the fault mode type that takes place,
If determined fault type is the low fault mode of fresh water pressure, then carry out Risk-warning according to the following step:
(1) checks whether fault of fresh water pump, if break down, whether check in the fresh water pump entrained gas earlier, whether seal arrangement breaks causes leaking, if no above-mentioned phenomenon judges that then fresh water pump is damaged;
(2) check whether the swelling water tank water yield is on the low side,, then judge to expand the not enough fault of water volume in water tank if on the low side;
(3) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(4) seal arrangement of the checking fresh water line inefficacy of whether breaking, whether break the pipeline weld joint, judges whether fault of fresh water line;
(5) check whether pressure monitoring devices lost efficacy,, judge that then pressure monitoring devices breaks down if lost efficacy, otherwise, forwarded for (3) step to reexamine;
If determined fault type is the high fault mode of fresh water temperature, then carry out Risk-warning according to the following step:
(1) checks at first whether fresh water pressure is normal, and whether seawater pressure is unusual, and whether delivery temperature is unusual, if these abnormal parameters are then at first investigated the phenomenon that causes these abnormal parameters;
(2) check whether fault of duct thermostat, if judge that then duct thermostat is malfunctioning;
(3) check whether fault of temperature monitoring apparatus;
(4) check whether swelling water tank outwards emits hot gas, if judge that then freshwater system steam can't get rid of
(5) check whether swelling water tank outwards emits fresh water, if then judge to occur that the cylinder head mat damages or cylinder sleeve exists crackle or trachoma;
(6) check whether the swelling water tank water yield is on the low side,, then judge to expand the not enough fault of water volume in water tank if on the low side;
(7) check whether fault of fresh water pump, if break down, whether check in the fresh water pump entrained gas earlier, whether seal arrangement breaks causes leaking, if no above-mentioned phenomenon judges that then fresh water pump is damaged;
(8) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(9) seal arrangement of the checking fresh water line inefficacy of whether breaking, whether break the pipeline weld joint, judges whether fault of fresh water line;
(10) if fault is not all found in the inspection of above each step, judge that then the main frame body breaks down;
Hang down fault mode if determined fault type is a seawater pressure, then carry out Risk-warning according to the following step:
(1) checks whether fault of sea water pump, if break down, whether check in the sea water pump entrained gas earlier, whether seal arrangement breaks causes leaking, if no above-mentioned phenomenon judges that then sea water pump is damaged;
(2) check whether Sea Chest is opened;
(3) check whether fault of sea water filter, filter screen whether occurs and stop up or break;
(4) check whether fault of instrument;
(5) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(6) seal arrangement of checking seawaterline inefficacys of whether breaking, whether break the pipeline weld joint, judges whether fault of seawaterline, if do not break down, then turns to (5) to go on foot again and investigate;
If determined fault type is the high fault mode of ocean temperature, then carry out Risk-warning according to the low fault mode of seawater pressure;
If determined fault type is the high fault mode of fresh water pressure, then carry out Risk-warning according to the following step:
(1) checks whether fault of monitoring equipment;
(2) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(3) seal arrangement of checking fresh water line inefficacys of whether breaking, whether break the pipeline weld joint, judges whether fault of fresh water line, if do not break down, then turns to (2) to go on foot again and investigate;
If determined fault type is the high fault mode of seawater pressure, then carry out Risk-warning according to the following step:
(2) check whether fault of monitoring equipment;
(2) from valve whether open and close incorrect, whether valve sealing device lost efficacy, whether valve opening and closing bad, whether valve damages several aspects checks whether all kinds of valves lost efficacy;
(3) seal arrangement of checking seawaterline inefficacys of whether breaking, whether break the pipeline weld joint, judges whether fault of seawaterline, if do not break down, then turns to (2) to go on foot again and investigate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100540678A CN101333957B (en) | 2008-08-05 | 2008-08-05 | Ship diesel closed type cooling water system risk prealarming method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100540678A CN101333957B (en) | 2008-08-05 | 2008-08-05 | Ship diesel closed type cooling water system risk prealarming method |
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| Publication Number | Publication Date |
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| CN101333957A CN101333957A (en) | 2008-12-31 |
| CN101333957B true CN101333957B (en) | 2010-12-29 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937530A (en) * | 2012-11-26 | 2013-02-20 | 昆山北极光电子科技有限公司 | Method for detecting blocking state of engine cooling water tank |
| US9937990B2 (en) | 2014-08-01 | 2018-04-10 | Circor Pumps North America, Llc | Intelligent sea water cooling system |
| EP3183445A1 (en) * | 2014-08-21 | 2017-06-28 | Imo Industries Inc. | Intelligent seawater cooling system |
| CN107651156A (en) * | 2017-10-27 | 2018-02-02 | 江苏大津重工有限公司 | A kind of unmanned boat and its Sea Chest chilled water unit |
| CN109795662B (en) * | 2019-03-05 | 2024-01-19 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Water cooling system of ship, adjusting method of water cooling system and ship |
| CN111561415A (en) * | 2020-06-01 | 2020-08-21 | 中国船舶科学研究中心 | Lubricating oil pressure controlled diesel engine cylinder liner water preheating system |
| CN113064371B (en) * | 2021-03-23 | 2022-04-05 | 博鼎汽车科技(山东)有限公司 | Ship engine heat management system controlled by monitor and implementation method thereof |
| CN114635782B (en) * | 2022-03-28 | 2023-02-03 | 东风商用车有限公司 | Troubleshooting method of vehicle cooling system and related equipment |
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