CN106523132A - Pressurizing type air cooling system of diesel engine - Google Patents
Pressurizing type air cooling system of diesel engine Download PDFInfo
- Publication number
- CN106523132A CN106523132A CN201611258463.3A CN201611258463A CN106523132A CN 106523132 A CN106523132 A CN 106523132A CN 201611258463 A CN201611258463 A CN 201611258463A CN 106523132 A CN106523132 A CN 106523132A
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- Prior art keywords
- water
- high temperature
- temperature section
- aerial cooler
- low
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
- F02B29/0462—Liquid cooled heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0412—Multiple heat exchangers arranged in parallel or in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0437—Liquid cooled heat exchangers
- F02B29/0443—Layout of the coolant or refrigerant circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Supercharger (AREA)
Abstract
The invention discloses a pressurizing type air cooling system of a diesel engine. An air cooler comprises a high temperature section and a low temperature section. When the system is in a low load mode, circulating water in a water bag entirely enters a jacket water heat exchanger after being pressurized through a circulating pump, all circulating water enters into the high temperature section of the air cooling device after being subjected to heat exchanging, all outlet circulating water of the high temperature section of the air cooling device flows into a boiler water heater through a pipeline, the outlet circulating water of the boiler water heater is divided into two paths through pipelines, one path flows to a boiler through the corresponding pipeline, and the other path flows into an organic working medium generator unit evaporator through the corresponding pipeline to be subjected to heat exchanging and then flows back to the water bag. When the system is in a high load mode, the circulating water in the water bag enters the jacket water heat exchanger after being pressurized through the circulating pump, the circulating water after heat exchanging is divided into two paths, one path enters the air cooling device to be subjected to heat exchanging, the other path flows to the boiler water heater through a pipeline and passes through a high-low pressure steam bag, and then the extra circulating water is mixed with the outlet water of the boiler water heater through a pressure reducing valve and then enters the organic working medium unit to be subjected to heat exchanging and then flows back to the water bag.
Description
Technical field
The invention belongs to Diesel Engine Technique Field, more particularly to a kind of diesel engine supercharging air cooling system.
Background technology
Aerial cooler is the heat exchanger using air heat flux body.Hot fluid in pipe passes through tube wall and fin and pipe
Outer air is exchanged heat, and air used is supplied by ventilation blower.
At present, marine low speed diesel engine charger-air cooler is all all-in-one-piece, in order to reach air cooled purpose,
Cooling water inflow is larger, and temperature is relatively low, it is difficult to recycle.Air velocity is the important heating power for directly determining aerial cooler performance
Parameter, flow velocity are higher, and heat transfer coefficient is bigger, and the pressure loss is also bigger, the property in terms of the two from diesel engine to aerial cooler
It is conflicting for requiring.Under the conditions of a certain depth dimensions, the more low then cooling effectiveness of flow velocity of air is higher, air
The pressure loss is less.
In configuration aspects, aerial cooler is mainly made up of tube bank, support and blower fan.The section bar and material of tube bank is to air
The performance impact of cooler is very big, due to the heat transfer coefficient very little of air side, therefore the additional fins of Chang Guan, to increase heat transfer area
And fluid velocity, reduce thermal resistance.Tube bank includes heat-transfer pipe, bobbin carriage, curb girder and crossbeam etc., is improved using horizontal arrangement as far as possible
Heat transfer area is simultaneously uniformly distributed air.Finned tube adopts hierarchal arrangement as the core parts of aerial cooler, and it is used as biography
Heat pipe can expand heat transfer area, improve heat-transfer effect.Marine low speed diesel engine charge-air temperature is cooled down at 190 DEG C or so
To cylinder is entered when 36 DEG C, there is larger heat reclaim, and air themperature is higher after main frame modulation, but the cooling of existing air
Device is configured on a diesel engine using all-in-one-piece structure mostly, and cooling water amount is larger, and water temperature is relatively low, the more difficult utilization of waste heat.
The content of the invention
The present invention utilizes the raising of apparatus system overall thermal efficiency for diesel residual heat, in particular, using high temperature
Water directly affects the thermal performance and security and a whole set of dress of waste heat boiler as waste heat boiler feedwater and organic working medium thermal source
The heat-economy put, reaches the purpose of raising system overall thermal efficiency, there is provided a kind of diesel engine supercharging air cooling system.
A kind of diesel engine supercharging air cooling system, including an aerial cooler, the core shell space of the aerial cooler
Interior arrangement two-part core of air cooler connects cooling water pipe respectively as high temperature section and low-temperature zone, high temperature section and low-temperature zone；
Two-part aerial cooler core housing need to be only inserted into during installation, it is easy for installation.
When the exit water temperature degree of aerial cooler high temperature section is less than setting value, the system is in low load mode, water
Recirculated water in bag fully enters cylinder sleeve water- to-water heat exchanger after circulating pump supercharging, and it is cold that the recirculated water after heat exchange fully enters air
But the high temperature section of device, aerial cooler high temperature section outlet recirculated water whole Jing pipelines all flow to boiler hot hydrophone,
Boiler hot hydrophone outlet recirculated water Jing pipelines are divided into two-way, lead up to pipeline flow-direction boiler, another road Jing pipelines
Water bag is returned to into organic working medium generating set evaporator heat exchange；
When the exit water temperature degree of aerial cooler high temperature section is more than or equal to setting value, when system is in high load capacity pattern,
Recirculated water in water bag fully enters cylinder sleeve water- to-water heat exchanger after circulating pump supercharging, and the recirculated water after heat exchange is divided into two-way, and one
Road air inlet cooler heat exchange, another road Jing pipeline flow-directions boiler hot hydrophone, the unnecessary circulation after high-low pressure drum
Water exports water by pressure-reducing valve and boiler hot hydrophone and mixes, and into after organic working medium set heat exchange returns to water bag；
The low-temperature zone of air cooler is intake by water inlet manifold, and after heat exchange, hot water Jing pipelines are to return main.
Preferably, the second three-way solenoid valve ratio positioned at aerial cooler high temperature section import is high positioned at aerial cooler
The 3rd three-way solenoid valve elder generation action of temperature section outlet,
When aerial cooler entrance circulates water cut, first switch the 3rd three-way solenoid valve, switch the second electromagnetic three-way afterwards
Valve,
In emergency loop, the second three-way solenoid valve and the 3rd three-way solenoid valve are while action.
The invention has the beneficial effects as follows, the low-temperature zone of aerial cooler can ensure that the scavenging temperature of diesel engine itself is enough
It is low, ensure that diesel engine normally runs, the heat of high temperature section can preferably give boiler feedwater waste heat, reduce heat loss, carry
The utilization rate of high-energy.
Description of the drawings
Fig. 1 is that diesel engine supercharging air cooling system of the present invention is in higher load condition schematic diagram.
Fig. 2 is that diesel engine supercharging air cooling system of the present invention is in low load condition schematic diagram.
Fig. 3 is aerial cooler embodiment figure in diesel engine supercharging air cooling system of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Diesel engine supercharging aerial cooler is re-designed as high temperature and low temperature two-part aerial cooler, air by the present invention
The high temperature section of cooler is preheated for boiler feedwater, and many remaining hot waters are then supplied to outside system.According to diesel engine supercharging air parameter,
Main diesel engine stable operation is required, using thermal conduction study and hydrodynamic methods, is calculated, is checked the heat exchange of charger-air cooler high temperature
The heat exchange area of device and cryogenic heat exchanger, cast, the liquid form of cooling water and air and high and low temperature cooling water flow, make height,
Low-temperature cooling water and air exit temp are satisfied by the cascade utilization of ship energy and main diesel engine intake air temperature is required.Analysis makes
With condition and operating load relation, it is determined that the thermal parameter needed for the height temperature section design of heat exchanger of economy, and changed by setting up
Hot device heat transfer and the Mathematical Modeling of resistance optimization, obtain tube bank heat exchange and the resistance pressure drop of heat exchanger designs, carry out structure and set
Meter；Pepeline characteristic, the calculating of required cooling water flow and the selection of water pump, configuration and control technology research are carried out simultaneously.
Fig. 1 is referred to, Fig. 1 is diesel engine supercharging air cooling system of the present invention in higher load condition schematic diagram, such as figure
Shown, when the exit water temperature degree of aerial cooler high temperature section is less than setting value, the system is in low load mode, water bag 1
In recirculated water by circulating pump 2 supercharging after fully enter cylinder sleeve water- to-water heat exchanger 3, it is cold that the recirculated water after heat exchange fully enters air
But the high temperature section 4 of device, aerial cooler high temperature section outlet recirculated water whole Jing pipelines all flow to boiler hot hydrophone 5, boiler hot
The outlet recirculated water Jing pipelines of hydrophone 5 are divided into two-way, lead up to pipeline flow-direction low-pressure drum 6 and HP steam drum 7, another Lu Jingguan
Road returns to water bag 1 into the heat exchange of organic working medium generating set evaporimeter 8.
Fig. 2 is that diesel engine supercharging air cooling system of the present invention is in low load condition schematic diagram, as illustrated, working as air
When the exit water temperature degree of cooler high temperature section is more than or equal to setting value, when system is in high load capacity pattern, the recirculated water in water bag 1
Cylinder sleeve water- to-water heat exchanger 3 is fully entered after circulating pump 2 is pressurized, the recirculated water after heat exchange is divided into two-way, and air inlet is cold all the way
But device heat exchange, another road Jing pipeline flow-directions boiler hot hydrophone, after high-low pressure drum 7, unnecessary recirculated water passes through pressure-reducing valve
Mix with boiler hot hydrophone outlet water, water bag is returned to into after organic working medium set heat exchange；
The low-temperature zone 9 of air cooler is intake by water inlet manifold, and after heat exchange, hot water Jing pipelines are to return main.
As a example by two-part aerial cooler as shown in Figure 3, present configuration and principle are further described.
After diesel residual heat is using the circulation pump startup of device, three-way solenoid valve T0002 and three-way solenoid valve T0003 is answered
In off status.When recirculated water is after cylinder sleeve water- to-water heat exchanger, by three-way solenoid valve T0001, three-way solenoid valve T0001 is in
Fully open position, recirculated water whole Jing pipeline air inlet cooler high temperature sections, the action of three-way solenoid valve T0002 elder generations, electromagnetic three-way
Action after valve T0003, the action of three-way solenoid valve T0002 elder generations, action after three-way solenoid valve T0003.When aerial cooler entrance is followed
During ring water cut, first switch three-way solenoid valve T0003, switch three-way solenoid valve T0002 afterwards, note the transfer sequence of valve, do not allow
Cooling water enters residual heat using device system circulation water system.It should be noted that when loop is in emergency loop, electromagnetism three
When port valve T0002 and three-way solenoid valve T0003 should be at open state, the action of three-way solenoid valve T0003 elder generations, three-way solenoid valve
Action after T0002.It is aerial cooler scavenging period that three-way solenoid valve T0003 closes delay time, and the two should be consistent.
Claims (3)
1. a kind of diesel engine supercharging air cooling system, it is characterised in that including an aerial cooler, the aerial cooler
Arrange in core shell space that two-part core of air cooler connects cooling respectively as high temperature section and low-temperature zone, high temperature section and low-temperature zone
Water pipe；
When the exit water temperature degree of aerial cooler high temperature section is less than setting value, the system is in low load mode, in water bag
Recirculated water by circulating pump supercharging after fully enter cylinder sleeve water- to-water heat exchanger, the recirculated water after heat exchange fully enters aerial cooler
High temperature section, aerial cooler high temperature section outlet recirculated water whole Jing pipelines all flow to boiler hot hydrophone,
Boiler hot hydrophone outlet recirculated water Jing pipelines are divided into two-way, lead up to pipeline flow-direction low-pressure drum and HP steam drum, separately
Jing pipelines return to water bag into organic working medium generating set evaporator heat exchange all the way；
When the exit water temperature degree of aerial cooler high temperature section is more than or equal to setting value, when system is in high load capacity pattern, water bag
In recirculated water by circulating pump supercharging after fully enter cylinder sleeve water- to-water heat exchanger, the recirculated water after heat exchange is divided into two-way, enters all the way
Enter aerial cooler to exchange heat, another road Jing pipeline flow-directions boiler hot hydrophone, after high-low pressure drum, unnecessary recirculated water leads to
Cross pressure-reducing valve to mix with boiler hot hydrophone outlet water, water bag is returned to into after organic working medium set heat exchange；
The low-temperature zone of air cooler is intake by water inlet manifold, and after heat exchange, hot water Jing pipelines are to return main.
2. diesel engine supercharging air cooling system according to claim 1, it is characterised in that described high temperature section Inlet and outlet water
With low-temperature zone Inlet and outlet water all at main frame thrust end.
3. it is as claimed in claim 1 to plant diesel engine supercharging air cooling system, it is characterised in that positioned at aerial cooler high temperature
Second three-way solenoid valve (T0002) of section import is than the 3rd three-way solenoid valve positioned at the outlet of aerial cooler high temperature section
(T0003) first action,
When aerial cooler entrance circulates water cut, first switch the 3rd three-way solenoid valve, switch the second three-way solenoid valve afterwards,
In emergency loop, the second three-way solenoid valve and the 3rd three-way solenoid valve are while action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611258463.3A CN106523132B (en) | 2016-12-30 | 2016-12-30 | Diesel engine charge air cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611258463.3A CN106523132B (en) | 2016-12-30 | 2016-12-30 | Diesel engine charge air cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106523132A true CN106523132A (en) | 2017-03-22 |
| CN106523132B CN106523132B (en) | 2022-07-15 |
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ID=58336126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611258463.3A Active CN106523132B (en) | 2016-12-30 | 2016-12-30 | Diesel engine charge air cooling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106523132B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211716A (en) * | 2020-09-14 | 2021-01-12 | 上海中船三井造船柴油机有限公司 | Condensate water discharge pipeline capable of being monitored for marine diesel engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5612035A (en) * | 1979-07-09 | 1981-02-05 | Sumitomo Heavy Ind Ltd | Waste heat recovery mechanism |
| CN103967648A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨工程大学 | Comprehensive waste heat recovery system of ship low-speed diesel engine |
| US20140311141A1 (en) * | 2011-08-31 | 2014-10-23 | Kabushiki Kaisha Toyota Jidoshokki | Waste heat utilization apparatus |
-
2016
- 2016-12-30 CN CN201611258463.3A patent/CN106523132B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5612035A (en) * | 1979-07-09 | 1981-02-05 | Sumitomo Heavy Ind Ltd | Waste heat recovery mechanism |
| US20140311141A1 (en) * | 2011-08-31 | 2014-10-23 | Kabushiki Kaisha Toyota Jidoshokki | Waste heat utilization apparatus |
| CN103967648A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨工程大学 | Comprehensive waste heat recovery system of ship low-speed diesel engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211716A (en) * | 2020-09-14 | 2021-01-12 | 上海中船三井造船柴油机有限公司 | Condensate water discharge pipeline capable of being monitored for marine diesel engine |
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| Publication number | Publication date |
|---|---|
| CN106523132B (en) | 2022-07-15 |
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