CN203584555U - Single-circulation combined cooling system of marine diesel engine - Google Patents

Single-circulation combined cooling system of marine diesel engine Download PDF

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Publication number
CN203584555U
CN203584555U CN201320621175.5U CN201320621175U CN203584555U CN 203584555 U CN203584555 U CN 203584555U CN 201320621175 U CN201320621175 U CN 201320621175U CN 203584555 U CN203584555 U CN 203584555U
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China
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cooling water
diesel engine
connecting pipeline
temperature
air
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CN201320621175.5U
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Chinese (zh)
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张小勇
云炎
王增法
刘仁武
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Henan Diesel Engine Industry Co Ltd
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Henan Diesel Engine Industry Co Ltd
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Abstract

The utility model belongs to the technical field of diesel engines, and relates to a single-circulation combined cooling system of a marine diesel engine. The single-circulation combined cooling system comprises a fresh water pump (11), a sea water pump (9), a temperature adjusting device (13), a heat exchanger (8), an air cooler (4) and connecting pipes. According to the single-circulation combined cooling system, different cooling water runners are selected according to the temperature of cooling water entering the temperature adjusting device (13), and therefore different types of cooling water circulation are achieved; the circulation amounts of cooling water entering the different types of cooling water circulation are controlled according to the temperature of cooling water entering the temperature adjusting device (13), the temperature of cooling water entering the air cooler and a diesel engine is then controlled, and therefore the diesel engine has good performance in a high working condition or a low working condition, and the diesel engine is high in effective efficiency.

Description

A kind of marine diesel engine single cycle hybrid cooling system
Technical field
The utility model belongs to Diesel Engine Technique Field, relates to a kind of marine diesel engine single cycle hybrid cooling system.
Background technique
Diesel engine is when work, and the fuel gas temperature in cylinder can be up to 2500 ℃, and the heat part that burning produces is converted into mechanical energy, makes diesel engine externally export acting; The waste gas that part heat is discharged from is taken away; Some heat is passed to the parts such as cylinder head, cylinder liner, piston and valve.The effect of diesel engine cooling system be diesel engine is forced cooling, by the dissipation of heat of Heating Components in atmosphere, the temperature of diesel engine is remained in lower scope, suitably improve again coolant water temperature, obtain good motor economic index simultaneously.
Most marine diesel engine adopts dual cycle cooling system more, a fresh water circulation, a seawater circulation.Fresh water circulation is to rely on fresh water pump to drive, cooling water pumps into diesel engine by fresh water pump, after the heat of the each heated component of absorption diesel engine, flow to cooling water thermostat, if water temperature is lower than thermostat setting value, through bypass line, directly flow back to fresh water pump, if temperature, higher than thermostat setting value, flows to heat exchanger, in heat exchanger, carry out after heat exchange with seawater, then flow back to fresh water pump; Seawater circulation has been driven by sea water pump, and seawater pumps into air-cooler by sea water pump, and then charge air cooling enters heat exchanger and cooling water and carry out heat exchange, and seawater is discharged heat exchanger after completing heat exchange, then flows back to sea.
Although dual cycle cooling system can meet diesel engine to pressurized air and the cooling requirement of diesel engine own when marine diesel engine full load condition, but have the following disadvantages: 1, pressurized air is undertaken cooling by seawater, diesel engine is when cold machine state, low owing to entering the ocean temperature of air-cooler, cause entering the interior charge-air temperature of cylinder lower, be unfavorable for burning, fuel consumption rate is too high, economic performance is bad, particularly serious in severe cold area; 2, during diesel engine part load condition, owing to only there being a kind of fresh water thermostat, can only simply shunt according to cooling water temperature, carry out simple cool cycles, can cause supercooling, consume too much diesel engine power, reduce diesel engine effective efficiency.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this utility model is to propose a kind of marine diesel engine single cycle hybrid cooling system.
The utility model for the technological scheme that completes its invention task and take is:
A kind of marine diesel engine single cycle hybrid cooling system, described cooling system comprises fresh water pump, sea water pump, temperature-adjusting device, heat exchanger, air-cooler and each connecting pipeline; Described fresh water pump is arranged on a side of diesel engine driving end, provides cooling water circulation required driving force; Described sea water pump is arranged on the opposite side of diesel engine driving end, is communicated with heat exchanger, and the seawater required driving force that circulates is provided; Described air-cooler is arranged on diesel engine output terminal, is the device that pressurized air and cooling water carry out heat exchange; Described heat exchanger is arranged on diesel engine driving end, is the device that cooling water and seawater carry out heat exchange; Described fresh water pump is communicated with diesel engine by connecting pipeline, for diesel engine provides recirculated cooling water; Diesel engine is carried out to cooled recirculated cooling water to be communicated with temperature-adjusting device; Described temperature-adjusting device has three cooling water outlets, and three described cooling water outlets are connected with heat exchanger, air-cooler, fresh water pump by connecting pipeline respectively; Be thermostatic three cooling water outlets, by connecting pipeline, be connected with fresh water pump respectively; By connecting pipeline, be connected with air-cooler, pressurized air is heated or cooling; By connecting pipeline, be connected with heat exchanger, carry out heat exchange with the seawater that enters heat exchanger; Described heat exchanger is communicated with air-cooler by connecting pipeline, makes cooling water carry out cooling to pressurized air; Described air-cooler is connected with fresh water pump by connecting pipeline.
Described temperature-adjusting device includes high temperature thermostat, low temperature thermostat and five cooling water channels; Five described cooling water channels are respectively: cooling water channel I, cooling water channel II, cooling water channel III, cooling water channel IV, cooling water channel V; Described high temperature thermostat, low temperature thermostat carry temperature sensing part, form according to the unlatching of the cooling water temperature control thermostat of inflow thermostat or close, and select different cooling water runners, realize the structure of different cooling water circulations; According to entering thermostatic coolant water temperature, the difference of high temperature thermostat, low temperature thermostat opening degree, and then control enter different cooling water circulations cooling water circulation amount, regulation and control enter the cooling water temperature of air-cooler and diesel engine, make diesel engine when high/low operating mode, all have superperformance, diesel engine effective efficiency is high.
The recirculated cooling water water outlet of described diesel engine is communicated with thermostatic high temperature thermostat by connecting pipeline I, cooling water channel I, when described high temperature thermostat is positioned at whole opening state, cooling water is communicated with heat exchanger by cooling water channel III, connecting pipeline IX, and cooling water enters heat exchanger; When described high temperature thermostat is positioned at Close All state, cooling water is communicated with thermostatic low temperature thermostat by cooling water channel II, and cooling water enters low temperature thermostat by cooling water channel II; When described low temperature thermostat is positioned at whole opening state, cooling water is communicated with fresh water pump by cooling water channel V, connecting pipeline VIII, connecting pipeline VII, makes cooling water flow into fresh water pump; When described low temperature thermostat is positioned at Close All state, cooling water is communicated with air-cooler by cooling water channel IV, connecting pipeline IV, connecting pipeline III, and cooling water flows into air-cooler.
The cooling means of above-mentioned marine diesel engine single cycle hybrid cooling system is:
Cooling water drives through fresh water pump, by connecting pipeline VI, enter diesel engine, after absorbing diesel engine heat, through connecting pipeline I, enter temperature-adjusting device, temperature-adjusting device is according to the cooling water temperature entering, high temperature thermostat, low temperature thermostat are opened or close or half-open semi-closure state, cooling water carries out different circulating paths in temperature-adjusting device inside, and diesel engine is realized different cooling water circulations:
When diesel engine is during in cold machine state, in air-cooler, charge-air temperature is lower than the temperature of cooling water, go out diesel engine cooling coolant-temperature gage lower, high temperature thermostat, low temperature thermostat are all in buttoned-up status, cooling water passes through cooling water channel I, high temperature thermostat, cooling water channel II, low temperature thermostat, cooling water channel IV, connecting pipeline IV, connecting pipeline III after entering temperature-adjusting device successively, enter air-cooler, in air-cooler inside, pressurized air is heated, then successively by connecting pipeline II, connecting pipeline VII, get back to fresh water pump; When the cold machine state of diesel engine, system heat exchanger is inoperative, and light, seawater does not carry out heat exchange, and pressurized air is heated by cooling water in air-cooler, enters the interior charge-air temperature of cylinder high, is beneficial to burning, and fuel consumption rate is too low, and economic performance is good;
When diesel engine is during in full load condition, in air-cooler, charge-air temperature is higher than the temperature of cooling water, go out diesel engine cooling coolant-temperature gage high, high temperature thermostat is in full open position, cooling water passes through cooling water channel I after entering temperature-adjusting device successively, high temperature thermostat, cooling water channel III, connecting pipeline IX, enter heat exchanger, the seawater pumping into sea water pump in heat exchanger carries out heat exchange, cooling water through heat exchange passes through connecting pipeline V successively, connecting pipeline III, enter air-cooler, to pressurized air, carry out cooling, then successively by connecting pipeline II, connecting pipeline VII, get back to fresh water pump.When diesel engine full load condition, system has efficient air-cooler and the heat exchanger with powerful cooling capacity, has guaranteed the cooling needs of full load condition pressurized air, and system has reached the effect of conventional binary cycle system completely;
When diesel engine is during in part load condition, in air-cooler, charge-air temperature, higher than the temperature of cooling water, goes out diesel engine cooling coolant-temperature gage moderate, high temperature thermostat, low temperature thermostat is all in half-open semi-closure state, and cooling water enters temperature-adjusting device rear portion cooling water successively by cooling water channel I, high temperature thermostat, cooling water channel III, connecting pipeline IX, enters heat exchanger, and the seawater pumping into sea water pump in heat exchanger carries out heat exchange, through the cooling water of heat exchange by after connecting pipeline V, and successively by cooling water channel I, high temperature thermostat, cooling water channel II, low temperature thermostat, cooling water channel IV, the second portion cooling water of connecting pipeline IV by connecting pipeline III, enters air-cooler after mixing, and in air-cooler inside, pressurized air is carried out coolingly, and then cooling water is by connecting pipeline II, and successively by cooling water channel I, high temperature thermostat, cooling water channel II, low temperature thermostat, cooling water channel V, after mixing, the Part III cooling water of connecting pipeline VIII by connecting pipeline VII, gets back to fresh water pump.According to entering thermostatic coolant water temperature, the difference of high temperature thermostat, low temperature thermostat opening degree, and then control enter different cooling water circulations cooling water circulation amount, regulation and control enter the cooling water temperature of air-cooler and diesel engine, make diesel engine when high/low operating mode, all have superperformance, diesel engine effective efficiency is high.
The diesel engine single cycle hybrid cooling system outstanding feature the utility model proposes is:
1, when the cold machine state of diesel engine, system heat exchanger is inoperative, and light, seawater does not carry out heat exchange, pressurized air is heated by cooling water in air-cooler, enters the interior charge-air temperature of cylinder high, is beneficial to burning, fuel consumption rate is too low, and economic performance is good;
2, when diesel engine full load condition, system has efficient air-cooler and has the heat exchanger of powerful cooling capacity, has guaranteed the cooling needs of full load condition pressurized air, and system has reached the effect of conventional binary cycle system completely;
3, temperature-adjusting device, by inner high and low temperature thermostat, can regulate air-cooler entering water temp and diesel coolant entering water temp automatically, makes diesel engine when high/low operating mode, all have superperformance, and diesel engine effective efficiency is high.
Accompanying drawing explanation
Fig. 1 is the utility model single cycle hybrid cooling system schematic diagram;
Fig. 2 is temperature-adjusting device structure principle chart;
In figure: 1, diesel engine; 2, connecting pipeline I; 3, connecting pipeline II; 4, air-cooler; 5, connecting pipeline III; 6, connecting pipeline IV; 7, connecting pipeline V; 8, heat exchanger; 9, sea water pump; 10, connecting pipeline VI; 11, fresh water pump; 12, connecting pipeline VII; 13, temperature-adjusting device; 14, connecting pipeline VIII; 15, connecting pipeline IX; 16, cooling water channel I; 17, high temperature thermostat; 18, cooling water channel II; 19, cooling water channel III; 20, low temperature thermostat; 21, cooling water channel IV; 22, cooling water channel V.
Embodiment
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings.
As shown in Figure 1, a kind of marine diesel engine single cycle hybrid cooling system, described cooling system comprises fresh water pump 11, sea water pump 9, temperature-adjusting device 13, heat exchanger 8, air-cooler 4 and each connecting pipeline; Described fresh water pump 11 is arranged on a side of diesel engine driving end, provides cooling water circulation required driving force; Described sea water pump 9 is arranged on the opposite side of diesel engine driving end, and the seawater required driving force that circulates is provided; Described air-cooler 4 is arranged on diesel engine output terminal, is the device that pressurized air and cooling water carry out heat exchange; Described heat exchanger 8 is arranged on diesel engine driving end, is the device that cooling water and seawater carry out heat exchange; Described fresh water pump 11 is communicated with diesel engine 1 by connecting pipeline 10, for diesel engine provides recirculated cooling water; Diesel engine 1 is carried out to cooled recirculated cooling water and be communicated with by connecting pipeline I 2 with temperature-adjusting device 13, enter temperature-adjusting device 13; The water outlet of described temperature-adjusting device 13 is connected with heat exchanger 8, air-cooler 4, fresh water pump 11 by connecting pipeline respectively; The cooling water after temperature-adjusting device modulation, enters fresh water pump 11 according to the temperature of cooling water by connecting pipeline VIII 14, connecting pipeline VII 12; Or enter air-cooler 4 by connecting pipeline IV 6, connecting pipeline III 5, pressurized air is heated; Or enter heat exchanger 8 by connecting pipeline IX 15; Described heat exchanger 8 is communicated with sea water pump 9, makes the cooling water that enters heat exchanger 8 obtain cooling; Described heat exchanger 8 is communicated with air-cooler 4 by connecting pipeline V 7, connecting pipeline III 5, makes cooled cooling water enter air-cooler 4, to pressurized air, carries out cooling; Described air-cooler 4 is connected with fresh water pump 11 by connecting pipeline II 3, connecting pipeline VII 12, makes the water outlet of air-cooler 4 enter fresh water pump 11.
In conjunction with Fig. 2, described temperature-adjusting device 13 includes: high temperature thermostat 17, low temperature thermostat 20 and five cooling water channels.Cooling water channel I 16 communicates with connecting pipeline I 2, cooling water channel III 19 communicates with connecting pipeline IX 15, cooling water channel IV 21 communicates with connecting pipeline IV 6, cooling water channel V 22 communicates with connecting pipeline VIII 14, high temperature thermostat 17, low temperature thermostat 20 carry temperature sensing part, and temperature sensing material paraffin is equipped with in temperature sensing part inside, according to the cooling water temperature paraffin that flows into thermostat, expand with heat and contract with cold and then control the unlatching of thermostat or close, select different cooling water runners, realize different cooling water circulations; According to entering thermostatic coolant water temperature, the difference of high temperature thermostat, low temperature thermostat opening degree, and then control enter different cooling water circulations cooling water circulation amount, regulation and control enter the cooling water temperature of air-cooler and diesel engine, make diesel engine when high/low operating mode, all have superperformance, diesel engine effective efficiency is high.
The recirculated cooling water water outlet of described diesel engine 1 is communicated with thermostatic high temperature thermostat 17 by connecting pipeline I 2, cooling water channel I 16, when cooling water temperature is higher than the standard-sized sheet temperature of high temperature thermostat 17, when described high temperature thermostat 17 is positioned at whole opening state, cooling water is connected with heat exchanger 8 by cooling water channel III 19, connecting pipeline IX 15, and cooling water enters heat exchanger 8; When cooling water temperature is lower than the open temp of high temperature thermostat 17, when described high temperature thermostat 17 is positioned at Close All state, cooling water is communicated with thermostatic low temperature thermostat 20 by cooling water channel II 18, and cooling water flows into cooling water channel II 18, low temperature thermostat 20; When cooling water temperature is higher than the standard-sized sheet temperature of low temperature thermostat 20, when described low temperature thermostat 20 is positioned at whole opening state, cooling water is connected with fresh water pump 11 by cooling water channel V 22, connecting pipeline VIII 14, connecting pipeline VII 12, makes cooling water flow into fresh water pump 11; When cooling water temperature is lower than the open temp of low temperature thermostat, when described low temperature thermostat 20 is positioned at Close All state, cooling water is communicated with air-cooler 4 by cooling water channel IV 21, connecting pipeline IV 6, connecting pipeline III 5, and cooling water flows into air-cooler 4.
The cooling means of above-mentioned marine diesel engine single cycle hybrid cooling system is:
Cooling water drives through fresh water pump 11, by connecting pipeline VI 10, enter diesel engine 1, after absorbing diesel engine 1 heat, through connecting pipeline I 2, enter temperature-adjusting device 13, temperature-adjusting device 13 is according to the cooling water temperature entering, high temperature thermostat 17, low temperature thermostat 20 are opened or are closed or half-open semi-closure state, cooling water carries out different circulating paths in temperature-adjusting device 13 inside, and diesel engine is realized different cooling water circulations:
When diesel engine is during in cold machine state, in air-cooler, charge-air temperature is lower than the temperature of cooling water, go out diesel engine cooling coolant-temperature gage lower, high temperature thermostat 17, low temperature thermostat 20 is all in buttoned-up status, cooling water passes through cooling water channel I 16 after entering temperature-adjusting device 13 successively, high temperature thermostat 17, cooling water channel II 18, low temperature thermostat 20, cooling water channel IV 21, connecting pipeline IV 6, connecting pipeline III 5, enter air-cooler 4, in air-cooler 4 inside, pressurized air is heated, then successively by connecting pipeline II 3, connecting pipeline VII 12, get back to fresh water pump 11, when the cold machine state of diesel engine, system heat exchanger is inoperative, and light, seawater does not carry out heat exchange, and pressurized air is heated by cooling water in air-cooler, enters the interior charge-air temperature of cylinder high, is beneficial to burning, and fuel consumption rate is too low, and economic performance is good,
When diesel engine is during in full load condition, in air-cooler, charge-air temperature is higher than the temperature of cooling water, go out diesel engine cooling coolant-temperature gage high, high temperature thermostat 17 is in full open position, cooling water passes through cooling water channel I 16 after entering temperature-adjusting device 13 successively, high temperature thermostat 17, cooling water channel III 19, connecting pipeline IX 15, enter heat exchanger 8, the seawater pumping into sea water pump 9 in heat exchanger 8 carries out heat exchange, cooling water through heat exchange passes through connecting pipeline V 7 successively, connecting pipeline III 5, enter air-cooler 4, to pressurized air, carry out cooling, then successively by connecting pipeline II 3, connecting pipeline VII 12, get back to fresh water pump 11, when diesel engine full load condition, system has efficient air-cooler and the heat exchanger with powerful cooling capacity, has guaranteed the cooling needs of full load condition pressurized air, and system has reached the effect of conventional binary cycle system completely,
When diesel engine is during in part load condition, in air-cooler, charge-air temperature, higher than the temperature of cooling water, goes out diesel engine cooling coolant-temperature gage moderate, high temperature thermostat 17, low temperature thermostat 20 is all in half-open semi-closure state, and cooling water enters temperature-adjusting device 13 rear portion cooling waters successively by cooling water channel I 16, high temperature thermostat 17, cooling water channel III 19, connecting pipeline IX 15, enters heat exchanger 8, and the seawater pumping into sea water pump 9 in heat exchanger 8 carries out heat exchange, through the cooling water of heat exchange by after connecting pipeline V 7, and successively by cooling water channel I 16, high temperature thermostat 17, cooling water channel II 18, low temperature thermostat 20, cooling water channel IV 21, the second portion cooling water of connecting pipeline IV 6 by connecting pipeline III 5, enters air-cooler 4 after mixing, and in air-cooler 4 inside, pressurized air is carried out coolingly, and then cooling water is by connecting pipeline II 3, and successively by cooling water channel I 16, high temperature thermostat 17, cooling water channel II 18, low temperature thermostat 20, cooling water channel V 22, after mixing, the Part III cooling water of connecting pipeline VIII 14 by connecting pipeline VII 12, gets back to fresh water pump 11.According to entering thermostatic coolant water temperature, the difference of high temperature thermostat, low temperature thermostat opening degree, and then control enter different cooling water circulations cooling water circulation amount, regulation and control enter the cooling water temperature of air-cooler and diesel engine, make diesel engine when high/low operating mode, all have superperformance, diesel engine effective efficiency is high.
The general cold machine state of diesel engine (just starting), charge-air temperature is identical with ambient temperature, and diesel engine water-exit temperature is generally between 50 to 60 ℃, and this temperature is lower than high and low temperature thermostat open temp; In severe cold area, generally first cooling water in diesel engine is heated to 45 ℃ and just starts diesel engine; The general open temp of high temperature thermostat is greater than charge-air temperature, and standard-sized sheet temperature is less than diesel coolant and allows maximum temperature; The general open temp of low temperature thermostat is greater than charge-air temperature, is less than the general open temp of high temperature thermostat, and standard-sized sheet temperature is less than height, warm thermostat standard-sized sheet temperature; The cold machine state of diesel engine, high low temperature thermostat all cuts out, and cooling water enters air-cooler; Diesel engine at full capacity, high temperature thermostat standard-sized sheet, cooling water enters heat exchanger; Under the most of operating mode of diesel engine, high and low temperature thermostat is all in half-open semi-closure state, comprehensive state; Comprehensive state refers to cooling water circulation path complexity, there is enter cools down, have and directly enter air-cooler, also have and directly get back to fresh water pump, and according to entering thermostatic coolant water temperature, the difference of high temperature thermostat, low temperature thermostat opening degree, the cooling water circulation amount difference that enters different cooling water circulations, the cooling water of each circulation exists and mixes temperature adjustment process.
In a kind of marine diesel engine single cycle of the utility model hybrid cooling system, high temperature thermostat in temperature-adjusting device, low temperature thermostat are opened or close and can complete by different control principles, open or close principle, increase high temperature thermostat, low temperature thermostat number, to change temperature control device internal cooling water channel and change that component mounting point is all considered as be the distortion of this model utility by changing high temperature thermostat, low temperature thermostat.

Claims (3)

1. a marine diesel engine single cycle hybrid cooling system, is characterized in that: described cooling system comprises fresh water pump (11), sea water pump (9), temperature-adjusting device (13), heat exchanger (8), air-cooler (4) and each connecting pipeline; Described fresh water pump (11) is arranged on a side of diesel engine driving end, provides cooling water circulation required driving force; Described sea water pump (9) is arranged on the opposite side of diesel engine driving end, is communicated with heat exchanger (8), and the seawater required driving force that circulates is provided; Described air-cooler (4) is arranged on diesel engine output terminal, is the device that pressurized air and cooling water carry out heat exchange; Described heat exchanger (8) is arranged on diesel engine driving end, is the device that cooling water and seawater carry out heat exchange; Described fresh water pump (11) is communicated with diesel engine (1) by connecting pipeline, for diesel engine provides recirculated cooling water; The recirculated cooling water water outlet of described diesel engine (1) is communicated with temperature-adjusting device (13); Described temperature-adjusting device (13) has three cooling water outlets; Three cooling water outlets of described temperature-adjusting device (13) are connected with heat exchanger (8), air-cooler (4), fresh water pump (11) by connecting pipeline respectively; Three cooling water outlets that are temperature-adjusting device (13) are connected with fresh water pump (11) by connecting pipeline respectively; By connecting pipeline, be connected with air-cooler (4), pressurized air is heated or cooling; By connecting pipeline, be connected with heat exchanger (8), carry out heat exchange with the seawater that enters heat exchanger; Described heat exchanger (8) is communicated with air-cooler (4) by connecting pipeline, makes cooling water carry out cooling to pressurized air; Described air-cooler (4) is connected with fresh water pump (11) by connecting pipeline.
2. according to a kind of marine diesel engine single cycle hybrid cooling system claimed in claim 1, it is characterized in that: described temperature-adjusting device (13) includes high temperature thermostat (17), low temperature thermostat (20) and five cooling water channels; Five described cooling water channels are respectively: cooling water channel I (16), cooling water channel II (18), cooling water channel III (19), cooling water channel IV (21), cooling water channel V (22); Described high temperature thermostat (17), low temperature thermostat (20) carry temperature sensing part, form according to the unlatching of the cooling water temperature control thermostat of inflow thermostat or close, and select different cooling water runners, realize the structure of different cooling water circulations.
3. according to a kind of marine diesel engine single cycle hybrid cooling system claimed in claim 1, it is characterized in that: the recirculated cooling water water outlet of described diesel engine (1) is communicated with thermostatic high temperature thermostat (17) by connecting pipeline; When described high temperature thermostat (17) is positioned at whole opening state, cooling water is communicated with heat exchanger (8) by cooling water channel III (19), connecting pipeline IX (15); When described high temperature thermostat (17) is positioned at Close All state, cooling water is communicated with low temperature thermostat (20) by cooling water channel II (18); When described low temperature thermostat (20) is positioned at whole opening state, cooling water is communicated with fresh water pump (11) by cooling water channel V (22), connecting pipeline VIII (14), connecting pipeline VII (12); When described low temperature thermostat (20) is positioned at Close All state, cooling water is communicated with air-cooler (4) by cooling water channel IV (21), connecting pipeline IV (6), connecting pipeline III (5).
CN201320621175.5U 2013-10-10 2013-10-10 Single-circulation combined cooling system of marine diesel engine Expired - Fee Related CN203584555U (en)

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Application Number Priority Date Filing Date Title
CN201320621175.5U CN203584555U (en) 2013-10-10 2013-10-10 Single-circulation combined cooling system of marine diesel engine

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Application Number Priority Date Filing Date Title
CN201320621175.5U CN203584555U (en) 2013-10-10 2013-10-10 Single-circulation combined cooling system of marine diesel engine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485874A (en) * 2013-10-10 2014-01-01 河南柴油机重工有限责任公司 Single-cycle mixing cooling system of diesel machine for ship and cooling method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485874A (en) * 2013-10-10 2014-01-01 河南柴油机重工有限责任公司 Single-cycle mixing cooling system of diesel machine for ship and cooling method
CN103485874B (en) * 2013-10-10 2016-01-20 河南柴油机重工有限责任公司 A kind of marine diesel engine single cycle hybrid cooling system and cooling means

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