CN203358863U - Ship central cooling system - Google Patents
Ship central cooling system Download PDFInfo
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- CN203358863U CN203358863U CN2013203943605U CN201320394360U CN203358863U CN 203358863 U CN203358863 U CN 203358863U CN 2013203943605 U CN2013203943605 U CN 2013203943605U CN 201320394360 U CN201320394360 U CN 201320394360U CN 203358863 U CN203358863 U CN 203358863U
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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
- Y02T70/00—Maritime or waterways transport
Abstract
The utility model relates to a ship central cooling system which is efficient and saves energy. A seawater cooling pump set and a low-temperature fresh water pump set are respectively provided with a frequency converter and are respectively and internally provided with a pressure switch. A seawater pipeline and a fresh water pipeline are respectively provided with an on-line detection temperature sensor and an on-line detection pressure sensor. An inlet-outlet pipeline of an auxiliary engine is provided with an on-line detection differential pressure sensor. A low-temperature fresh water electric tee confluence temperature regulating valve with the valve location feedback function is installed at the outlet side of a fresh water central cooler. On the basis of a traditional ship central cooling system, thermal load parameters of the cooling system, flow resistance of the pipelines, selected types of pumps and the cooler, flow speed in the pipeline and the like are optimized, and the rotation speed of the pumps is changed in a frequency conversion mode, so that flow changes along with thermal loads of the system, energy consumption of seawater pumps and fresh water pumps are saved as much as possible, and the purpose of energy conservation of configuration type selection and system operation is achieved finally.
Description
Technical field
The utility model relates to a kind of integral central cooling water system for marine diesel engine, specifically a kind of energy-efficient integral central cooling water system for marine diesel engine of optimal design.
Background technology
Integral central cooling water system for marine diesel engine is one of important system guaranteed the marine powerplant safe and reliable operation.Traditional integral central cooling water system for marine diesel engine is comprised of salt water cooling system and cooling system of fresh water, it first utilizes cooled with seawater fresh water by central cooler, remove as cooling media equipment or the cooling vessel that on cooling boats and ships, other need to be cooling with fresh water again, the temperature of whole power system equipment is remained in efficient working range, to guarantee stable normal work.
The salt water cooling system of traditional integral central cooling water system for marine diesel engine, as shown in Figure 1, by the high-low position sea water tank, the cooling sea water pump group, central cooler, pipeline and manually actuated control valve part and sea water pump group control housing form.Cooling system of fresh water as shown in Figure 2, by the low temperature fresh water expansion tank, low temperature fresh water pump group, central cooler, low temperature fresh water three-way temperature control valve, middle bearing, the main frame air cooler, main frame lubricating oil cooler, main engine jacket hydrocooler, the main frame Air compressor, central station of floating dock A/C, air conditioner for kitchen, the air-conditioning compressor condenser, refrigeration compressor condenser, atmospheric condenser, the subsidiary engine air cooler, subsidiary engine lubricating oil cooler and pipeline and manual valve member and low temperature fresh water pump group control housing form.
Traditional integral central cooling water system for marine diesel engine lacks the systematicness optimization of design and selection, has unreasonable allocation, the defect that energy consumption is high.Usually the configuration of integral central cooling water system for marine diesel engine and design are undertaken by ship design company, buy voluntarily pump, cooling vessel and other assemblies by shipyard, then be installed on ship, due to the systematicness that lacks design and selection and the difference of system unit matching, often cause the amount of redundancy of the system integration excessive, cause energy dissipation and over-the-road expense to increase.The central cooling system that aboard ship configured at present, most cooling water pump capacity is all bigger than normal, and energy consumption is larger, is unfavorable for energy-saving and emission-reduction.And cooling vessel adopts the equipment of import substantially, external equipment vendors when calculating the capacity of cooling vessel, the suitable capacity of not recommending cooling water pump, the parameters just provided according to shipyard is joined cooling vessel, is not distribute rationally substantially.The quality of system configuration is very large to the equipment work influence of main frame and full ship, also very large on the load impact of the electrical generator on ship.
In addition, the piping economy of traditional integral central cooling water system for marine diesel engine remains further to be improved.Due to the sea of traditional integral central cooling water system for marine diesel engine, flow velocity in the fresh water circuit pipe, normally according to theoretical investigation and real ship service condition, according to the empirical data scope of recommending, selected.The velocity in pipes selected value is optimum value not necessarily.And the size of its value directly has influence on definite the going forward side by side of the diameter of pipeline and resistance and has influence on pump performance and efficiency.Velocity in pipes is the key factor that affects the piping economy, and reasonably the relation between the good systemic-function of balance and first cost and over-the-road expense, could realize system optimization.
Traditional integral central cooling water system for marine diesel engine, its system arranges the consideration that lacks energy saving in running, and system can not be adjusted cooling water flow in time, effectively according to this working conditions change of load, ambient temperature or sea temperature of main frame and equipment.In traditional integral central cooling water system for marine diesel engine sea, the operation plan of fresh water circuit, the capacity setting of seawater and cooling down water pump is generally 2 * 100% or 3 * 50%, the power saving while not considering the different load operation.And, in order to reach the fresh water temperature constant before the low temperature fresh water pump, be that the adjusting by being located at the three-way temperature control valve in central cooling system central cooler fresh water inlet ductwork realizes.A large amount of water is that bypass has been fallen, and this just can cause the waste of energy unavoidably.
In sum, there are the major defects such as the system configuration type selection optimum design is not enough, the piping Optimization Design of Economy lacks, the consideration of system energy saving in running is inadequate in traditional integral central cooling water system for marine diesel engine.
Summary of the invention
Technical problem to be solved in the utility model is: the major defect existed for above-mentioned traditional integral central cooling water system for marine diesel engine, carry out system configuration Lectotype Optimization, the optimization of piping economy, the optimization of system energy saving in running, thereby propose a kind of energy-efficient integral central cooling water system for marine diesel engine of optimal design, realize the purpose that system high efficiency is energy-conservation.
In order to solve above technical matters, the utility model provides a kind of integral central cooling water system for marine diesel engine, by salt water cooling system and cooling system of fresh water, formed, described salt water cooling system comprises the high-low position sea water tank, the cooling sea water pump group, the seawater central cooler, seawaterline, sea water control valve part and salt water cooling system control housing; Described cooling system of fresh water comprises the low temperature fresh water expansion tank, low temperature fresh water pump group, fresh water central cooler, middle bearing, main frame air cooler, main frame lubricating oil cooler, the main engine jacket hydrocooler, main frame Air compressor, central station of floating dock A/C, air conditioner for kitchen, air-conditioning compressor condenser, refrigeration compressor condenser, atmospheric condenser, subsidiary engine, subsidiary engine air cooler, the subsidiary engine lubricating oil cooler, fresh water line, fresh water controls valve member and the cooling system of fresh water control housing forms; On described cooling sea water pump group and low temperature fresh water pump group, frequency converter all is installed, and in described cooling sea water pump group and low temperature fresh water pump group the setting pressure switch; Online detected temperatures sensor and online detected pressures sensor are installed on described seawaterline and fresh water line; Described subsidiary engine is imported and exported on pipeline online detection differential pressure transducer is installed; Described fresh water central cooler outlet side is equipped with the low temperature fresh water electric three passes interflow temperature regulating valve with the valve position feedback function; Described frequency converter, pressure switch, detect differential pressure transducer, online detected temperatures sensor and online detected pressures sensor online and all communicate to connect with described seawater/cooling system of fresh water control housing.
The technical scheme that the utility model further limits is: aforesaid integral central cooling water system for marine diesel engine is characterized in that: described online detected temperatures sensor is PT100 type resistance temperature detector.
Aforesaid integral central cooling water system for marine diesel engine, have gauge valve on described online detected pressures sensor, and be provided with display module on pressure sensor, alarm module and signal feedback module.
Aforesaid integral central cooling water system for marine diesel engine, described sea water control valve part and fresh water are controlled valve member and are the automatic controlling valve part of controlling by seawater/cooling system of fresh water control housing.
Further, aforesaid integral central cooling water system for marine diesel engine also is equipped with the low temperature fresh water expansion tank in described fresh water line, and on described low temperature fresh water expansion tank, liquid level switch and low-level alarm is installed.
The utility model mainly is optimized design aspect three, specific as follows:
1, equipment configuration and Lectotype Optimization, system is carried out to calculation of Heat Load, according under design temperature, the different operating modes of boats and ships, calculated respectively with regard to four operating modes such as running working condition, inward & outward operating mode, handling goods operating mode and the operating modes of berthing respectively, thereby determined required sea, the fresh water water yield and temperature under each operating mode.Select the parameter of sea, fresh water pump capacity and cooling vessel under maximum applying working condition.From systematic angle, guaranteeing under the reliability prerequisite of system, avoided conventional and reduced amount of redundancy by the irrationality that operating point configures at full capacity, reduced the capacity of sea, fresh water pump etc., realized the energy-conservation purpose of lectotype selection.
2, the piping economy is optimized, and the piping economy is optimized, and refers to that sea, fresh water circuit economy calculate, and its objective is the equilibrium point of seeking a piping weight and velocity in pipes, makes whole system reach the purpose that not only reduces initial investment but also reduce operation energy consumption.The central cooling system year cost of general boats and ships, investment cost accounts for 20%～30%, and the pump energy consumption cost accounts for 65%～70%, and service expenditure accounts for 10%.Pump energy consumption cost proportion is larger, reduces the pump energy consumption cost to realize system optimization.Reduce the drag losses of pipeline, make in pipe to reach the purpose that optimum flow rate can realize reducing the pump energy consumption effectively.The size of velocity in pipes is directly connected to diameter and the resistance of pipeline and relates to pump performance and efficiency.For fresh water line, flow velocity reduces and can realize by the caliber increase, and this will mean increases the initial investment cost, but reduces the operation energy consumption expense; Contrary flow velocity raises, and needs caliber to diminish, and can reduce just current cost, but the energy consumption increase, it is large that operating cost becomes.And if the seawaterline flow velocity is too high, can make the corrosion of pipeline accelerate.Math modeling and realistic model by setting up system, carry out simulation calculation to system, and analysis and comparison finds the equilibrium point of, determines best velocity in pipes, saves the material of pipeline in the energy consumption that reduces pump simultaneously.
3, the system energy saving in running is optimized, and integral central cooling water system for marine diesel engine is in operational process, and the temperature controlling system of central cooling water expansion tank is the key problem of system.By optimal design, sea, fresh water pump group adopt variable frequency pump; Low temperature fresh water three-way temperature control valve adopts the electric three passes interflow control cock with temperature feedback and control of valve position; Sea water and fresh water is imported and exported on pipeline and is reasonably arranged temperature, pressure sensor, detected temperatures signal, pressure signal in real time; The autonomous cruise speed system of integrated form, because of ambient temperature, sea temperature, the isoparametric variation of main unit load, the automatic detection moved by system, and by PLC and frequency converter, rotating speed and the triple valve valve position of sea, fresh water pump are adjusted automatically, thereby the temperature out that guarantees low temperature fresh water is stable, to reach the purpose that reduces pump consumption.
The system energy saving in running also has two places that should be noted that in controlling.One, seawater high-temperature control and warning: after seawater flow reduces, but temperature can not be too high, otherwise the salt in seawater will be precipitated, and corrosion pipeline and cooling vessel affect the performance of system.All be provided with temperature sensor therefore import and export the side seawaterline at central cooler during system, realize high-temperature control and warning; Its two, sea pressure is low to be controlled and reports to the police: sea pressure can not be too little, must be more than the resistance of the switching pressure of stand by pump and pipeline.Therefore import and export the side seawaterline at central cooler during system and all be provided with pressure sensor, realize the minimal pressure restriction, be converted to just frequency modulation establish low pressure alarming down of minimal pressure limits value.
The beneficial effects of the utility model are: the utility model is on the basis of traditional integral central cooling water system for marine diesel engine, thermal load parameter to cooling system, the pipeline flow resistance, the type selecting of pump and cooling vessel, velocities in pipes etc. are optimized, and in sea, variable frequency pump and online inspection and control system have been adopted in fresh water system, changed the original mode of determining the rotating speed constant flow, change the rotating speed of pump by the mode of frequency conversion, flow can be changed according to the size of the thermal load of system thereupon, saved as much as possible the energy consumption of sea water and fresh water pump, finally reach the purpose of the energy-conservation and system energy saving in running of configuration type selecting.
The accompanying drawing explanation
Fig. 1 is salt water cooling system schematic diagram in traditional integral central cooling water system for marine diesel engine.
Fig. 2 is cooling system of fresh water schematic diagram in traditional integral central cooling water system for marine diesel engine.
The salt water cooling system schematic diagram that Fig. 3 is integral central cooling water system for marine diesel engine of the present utility model.
The cooling system of fresh water schematic diagram that Fig. 4 is integral central cooling water system for marine diesel engine of the present utility model.
The specific embodiment
A kind of integral central cooling water system for marine diesel engine that the present embodiment provides, be combined into by salt water cooling system and cooling system of fresh water.Salt water cooling system in the present embodiment, its schematic diagram as shown in Figure 3.Seawater enters respectively high-order sea water tank 1 and low level sea water tank 2 from the port and starboard sea chest, the seawater come through sea water tank enters the seawater house steward by filter filtering marine life, pass through again seawater variable frequency pump group 3 through the frequency conversion flow regulating, have additional pressure sensor 4 and temperature sensor 5 on pump group export pipeline, the pressure and temperature value that enters seawater central cooler 6 front seawater can be detected in real time, this signal can directly feed back to the PLC controller in central cooling water temperature control system 7, the pressure and temperature online feedback signal of PLC controller coupling system sea water and fresh water import and export, through PID, regulate and the fuzzy program computing, controller outputs a control signal to the sea water pump frequency converter to control its electric machine frequency, realize sea water pump frequency control flow regulating, enter the titanium plate central cooler of two efficient matching optimizations of process from the seawater of sea water pump group outlet, fresh water is carried out after cooling flowing back to sea, part flows back to the low level sea water tank.Whole process implementation utilize the function of seawater through the cooling fresh water of central cooler, and reduced the consumption of power of sea water pump.
The present embodiment is optimized the sea water pump group of configuration and type selecting, two Taiwan Straits water pumps, consists of, and one of a job is standby, every pump all has additional a pressure switch, for the switching between pump, every pump has additional again a frequency converter, for the adjusting of sea water pump motor speed.This sea water pump group is after to the fresh water pump optimized Selection, makes the total flow of fresh water pump reduce to some extent, and the rated flow of corresponding cooling sea water pump also can correspondingly reduce.By heat load balance, calculate, under the running working condition that can to draw in sea temperature be 32 ℃, required seawater flow computing value.According to having considered the actual fresh-water flow after the safe clearance, draw the required flow of reality of seawater again.Consider that central cooler is after long-time the use, can fouling gradually, make reduction of heat exchange efficiency, and, after sea water pump adopted frequency conversion, flow can be regulated on demand.Therefore total displacement and the pressure head of sea water pump group still remain unchanged, final rated discharge and the lift of determining with two Taiwan Straits water cooling pumps.Traditional sea water pump group is three Taiwan Straits water pumps.Use at ordinary times two, one standby.While berthing, with one, two standby.After considering to adopt variable frequency pump, only need join two, a job, one is standby, and does not need to join the sea water pump that berths.
The present embodiment has adopted the central cooler through efficient matching optimization.This central cooler unit consists of two titanium plate central coolers with pressure, thermometric instrument and venting facility, and the heat exchanger of every central cooler is 50% of total heat exchange amount.By to various materials as titanium material, two phase stainless steel, copper nickel alloy etc. to Seawater corrosion beharvior contrast and forming property contrast after, final determine adopt the titanium material.On system calculation of Heat Load basis, according to each heat gain from appliance and equipment summation in system under full load mode, with two central coolers of system configuration, every accounts for 50% of total heat exchange amount, obtain every heat exchange amount computing value, according to the Pressure Drop of full load mode parameter and pipeline and cooling vessel, determine the efficient central cooler with system matches.Take into full account the heat transfer characteristic of central cooler, in conjunction with the plate overall coefficient of heat transfer that affects the central cooler heat exchange efficiency, the factor analysis such as flow velocity between corrugated form, thickness, plate, and consider the central cooler drooping characteristic, in conjunction with factors such as the veneer heat interchanging area that affects the central cooler pressure drop, rigid-flex layouts relatively.The detection and the high temperature that are provided with online temperature in the system of optimal design are analysed the salt limitation function, finally determine and are reaching two titanium plate central coolers on the basis of required working condition requirement, and its heat exchange efficiency is high, compact conformation, pressure drop are moderate, and amount of redundancy is little.
Cooling system of fresh water in the present embodiment, its schematic diagram as shown in Figure 4.Fresh water system is a closed system, fresh water is by the low temperature fresh water expansion tank 8 of having set up liquid level switch and low alarm function, through the fresh water house steward, enter and be optimized configuration and the low temperature fresh water variable frequency pump group 9 of type selecting through the frequency conversion flow regulating, the titanium plate fresh water central cooler 10 that the fresh water exported from the fresh water pump group enters two efficient matching optimizations of process carries out cooling by seawater to fresh water.The electric three passes interflow temperature regulating valve of cooled fresh water band valve position feedback function is further finely tuned, and flows to each user side of boats and ships.Fresh water pressure sensor 11 and temperature sensor 12 have been set up on fresh water pump group export pipeline in cooling system of fresh water, can detect in real time the pressure and temperature value of central cooler inlet side fresh water, this signal can directly feed back to the PLC controller of central cooling water temperature control system 13, the pressure and temperature online feedback signal of PLC controller coupling system sea water and fresh water import and export, through PID, regulate and the fuzzy program computing, controller outputs a control signal to sea water and fresh water pump frequency conversion device to control its electric machine frequency, realize the sea water and fresh water pump frequency converting speed regulating, outputting a control signal to the electric three passes temperature control valve regulates to control its valve position, finally realize definite value control and the fresh water pump power-dissipation-reduced of fresh water temperature.The cooling freshet of flowing through in cooling system of fresh water after three-way temperature control valve is to each user side of boats and ships, and user's I has three subsidiary engines, and the Hand-operated butterfly valve in three subsidiary engine water outlet pipelines all is optimized for direct-operated regulator, realizes automatically controlling.Cooling fresh water carries out cooling through the air of subsidiary engine air cooler 14 and 15 pairs of subsidiary engines of subsidiary engine lubricating oil cooler and lubricating oil, make air and lubricating oil in the actv. operating range, thereby guarantee that subsidiary engine equipment can work.User's II has middle bearing 16, main frame air cooler 17, main frame lubricating oil cooler 18, main engine jacket hydrocooler 19.Wherein the Hand-operated butterfly valve at the empty cooling vessel of main frame and main engine jacket hydrocooler water outlet place is optimized for direct-operated regulator, realizes automatically controlling.The cooling fresh water tween drive shaft of flowing through is respectively accepted insurance, main frame air device and main frame lubricating oil cooler, and the process fresh water of the main frame lubricating oil cooler of flowing through, then enter the main engine jacket hydrocooler in order to cooling host high-temperature jacket water, thus guarantee each equipment smooth operation.User's III also has main frame air compressor 20, central station of floating dock A/C 21, air conditioner for kitchen 22, air-conditioning compressor condenser 23, refrigeration compressor 24.Wherein the manual shutoff valve at air-conditioning compressor condenser water outlet place is optimized for direct-operated regulator, realizes automatically controlling.Thereby cooling freshet makes it normal smooth operation through these equipment.The atmospheric condenser 25 of flowing through after the fresh water of the user's II of flowing through and user's III end confluxes, finally finally get back to fresh water central cooler 10 through the fresh water pump group with the fresh water of user's I outlet and enter next circulation.
The present embodiment is optimized the low temperature fresh water variable frequency pump group of configuration and type selecting, three fresh water pumps, consists of, and two one of work are standby.Every pump all has additional a pressure switch, and for the switching between pump, parallel connection and off-the-line, every pump has additional again a frequency converter, for the adjusting of fresh water pump motor speed.This fresh water pump group on the basis of system calculation of Heat Load, while selecting the sea temperature worst condition under running working condition required cooling water inflow, carry out full load mode running condition few especially under this sea temperature.So add certain surplus on required cooling water inflow, discharge capacity and lift under the standard duty of selected three fresh water cooling water pumps, three parallel connections, two work, one is standby.The rated discharge of every pump is 50% of total displacement.After optimal design, fresh water cooling water pump total displacement slightly reduces.And the water pump data provided according to manufacturer, satisfactory water pump is compared by performance, select the standard duty point that reaches required, power of motor is less, and efficiency is high, and also lower optimum model of net positive suction head, reaches the energy-conservation purpose of configuration optimization and type selecting.
The integral central cooling water system for marine diesel engine of the present embodiment optimal design, from systemic angle, to the equipment in system, as sea water and fresh water pump, central cooler, be optimized configuration type selecting energy-conservation, to the piping in system, carry out economy calculating, determine best velocity in pipes, energy conservation is carried out in operation to system, sea water and fresh water is imported and exported on pipeline and is set up online detected pressures, temperature-sensing element, sea water and fresh water pump group is set up frequency converter, pressure switch, set up central cooling water temperature control system, by the PLC controller in control system, with the pressure and temperature feedback input signal detected online, through PID, regulate and the fuzzy control program computing, PLC outputs a control signal to frequency converter and temperature control adjusting valve management sea, the running state of fresh water pump and the valve position of triple valve, automatically control sea, the mutual switching of fresh water pump, in parallel, off-the-line and speed governing, to obtain rational sea, the valve position that fresh-water flow and three-way temperature control valve are applicable, with the definite value that finally realizes low temperature fresh water temperature, control, and make system reach the purpose of energy saving in running.
The utility model can also have other embodiment, and the integral central cooling water system for marine diesel engine that the equal replacement of all employings or equivalent transformation form, within all dropping on the claimed scope of the utility model.
Claims (5)
1. an integral central cooling water system for marine diesel engine, be comprised of salt water cooling system and cooling system of fresh water, and described salt water cooling system comprises the high-low position sea water tank, the cooling sea water pump group, the seawater central cooler, seawaterline, sea water control valve part and salt water cooling system control housing; Described cooling system of fresh water comprises the low temperature fresh water expansion tank, low temperature fresh water pump group, fresh water central cooler, middle bearing, main frame air cooler, main frame lubricating oil cooler, the main engine jacket hydrocooler, main frame Air compressor, central station of floating dock A/C, air conditioner for kitchen, air-conditioning compressor condenser, refrigeration compressor condenser, atmospheric condenser, subsidiary engine, subsidiary engine air cooler, the subsidiary engine lubricating oil cooler, fresh water line, fresh water controls valve member and the cooling system of fresh water control housing forms; It is characterized in that: on described cooling sea water pump group and low temperature fresh water pump group, frequency converter all is installed, and in described cooling sea water pump group and low temperature fresh water pump group the setting pressure switch; Online detected temperatures sensor and online detected pressures sensor are installed on described seawaterline and fresh water line; Described subsidiary engine is imported and exported on pipeline online detection differential pressure transducer is installed; Described fresh water central cooler outlet side is equipped with the low temperature fresh water electric three passes interflow temperature regulating valve with the valve position feedback function; Described frequency converter, pressure switch, detect differential pressure transducer, online detected temperatures sensor and online detected pressures sensor online and all communicate to connect with described seawater/cooling system of fresh water control housing.
2. integral central cooling water system for marine diesel engine as claimed in claim 1, it is characterized in that: described online detected temperatures sensor is PT100 type resistance temperature detector.
3. integral central cooling water system for marine diesel engine as claimed in claim 1 is characterized in that: there is gauge valve on described online detected pressures sensor, and be provided with display module on pressure sensor, alarm module and signal feedback module.
4. integral central cooling water system for marine diesel engine as claimed in claim 1 is characterized in that: described sea water control valve part and fresh water are controlled valve member and are the automatic controlling valve part of controlling by seawater/cooling system of fresh water control housing.
5. integral central cooling water system for marine diesel engine as claimed in claim 1, is characterized in that: the low temperature fresh water expansion tank also is housed in described fresh water line, and on described low temperature fresh water expansion tank, liquid level switch and low-level alarm is installed.
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106275358A (en) * | 2016-09-27 | 2017-01-04 | 上海斯达瑞船舶海洋工程服务有限公司 | A kind of salt water cooling system method for controlling frequency conversion peculiar to vessel and system |
| TWI570022B (en) * | 2014-10-30 | 2017-02-11 | Ship host cylinder water cooling system | |
| TWI570023B (en) * | 2014-11-10 | 2017-02-11 | Ship central fresh water cooling system | |
| CN109131819A (en) * | 2018-09-17 | 2019-01-04 | 中船澄西船舶修造有限公司 | A kind of large ship cabin cooling water recirculation system |
| CN109682236A (en) * | 2018-12-25 | 2019-04-26 | 中国船舶重工集团公司第七一九研究所 | A kind of etch-proof ship high temperature heat exchanger |
| CN109795662A (en) * | 2019-03-05 | 2019-05-24 | 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） | The water cooling system and its adjusting method and ship of ship |
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| CN112082309A (en) * | 2020-08-04 | 2020-12-15 | 沪东中华造船(集团)有限公司 | Central fresh water cooling and energy saving system for ship |
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| TWI570022B (en) * | 2014-10-30 | 2017-02-11 | Ship host cylinder water cooling system | |
| TWI570023B (en) * | 2014-11-10 | 2017-02-11 | Ship central fresh water cooling system | |
| CN106275358A (en) * | 2016-09-27 | 2017-01-04 | 上海斯达瑞船舶海洋工程服务有限公司 | A kind of salt water cooling system method for controlling frequency conversion peculiar to vessel and system |
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