CN113669185A - Multi-channel fresh water mutual preheating heating system and method for marine diesel engine and diesel generator - Google Patents
Multi-channel fresh water mutual preheating heating system and method for marine diesel engine and diesel generator Download PDFInfo
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- CN113669185A CN113669185A CN202110719623.4A CN202110719623A CN113669185A CN 113669185 A CN113669185 A CN 113669185A CN 202110719623 A CN202110719623 A CN 202110719623A CN 113669185 A CN113669185 A CN 113669185A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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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
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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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
- F02B77/00—Component parts, details or accessories, not otherwise provided for
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Abstract
The invention discloses a multi-channel fresh water mutual preheating heating method for a marine diesel engine and a plurality of diesel generators, wherein the diesel generators are arranged in a plurality, and the fresh water pipelines of the diesel generators are connected in parallel, and the method is characterized by comprising the following steps of: step one, the diesel generators and the diesel engine are not started, and a preheater is used for heating water in a fifth fresh water circulating pipeline to preheat one of the diesel generators; step two, starting the preheated diesel generator to preheat the diesel engine; step three, starting the diesel engine; step four, heating water in the first fresh water circulating pipeline by heat generated by the working of the diesel engine, and preheating the diesel generator which is not preheated; step five, starting the diesel generator after the diesel generator reaches the preheating temperature; and step six, repeating the step four and the step five. The method has the advantages that mutual preheating speed is high, consumption of ship electric energy is reduced, and an energy-saving effect is achieved.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a multi-channel fresh water mutual preheating and heating system and method for a marine diesel engine and a diesel generator.
Background
Before a diesel engine is started, warming of the cylinder is generally required. As shown in fig. 1, in the pipeline design, an electric heating unit is usually arranged outside the diesel engine, and the electric heating unit heats fresh water, and the preheated fresh water is injected into the diesel engine and flows out of the diesel engine and returns to the preheated fresh water pump. The circulating hot fresh water enables the cylinder sleeve in the diesel engine to reach the temperature required by a diesel engine manufacturer, and thus the diesel engine can be started. The diesel generator is the same. The diesel engine and the diesel generator are respectively provided with an electric heating unit, the power of the electric heating unit of the diesel engine is usually large, for example, the capacity of the electric heating unit of the diesel generator with the model of MAN B & W G50ME-C9.5-TII is 110 kilowatts, each diesel generator MAN 6L28/32H needs to be provided with an electric heating unit of 12 kilowatts, but the diesel engine warming tank still needs a long time, for example, fresh water is heated from 15 ℃ to 50 ℃ for about 12 hours, and therefore, the electric heating process consumes a large amount of electric energy of the ship.
Therefore, how to design a preheating mode of a diesel engine, which can reduce the application of a high-power electric heating unit and achieve the effect of energy saving, is a problem that needs to be solved at present.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a multi-channel fresh water mutual preheating and heating system for a marine diesel engine and a diesel generator. In addition, the invention also provides a multi-channel fresh water mutual preheating and heating method for the marine diesel engine and the diesel generator.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a multi-channel fresh water mutual preheating and heating method for a marine diesel engine and a plurality of diesel generators, wherein the diesel generators are arranged in a plurality, and the fresh water pipelines of the diesel generators are connected in parallel, and the method is characterized by comprising the following steps of:
step one, the diesel generator and the diesel engine are not started, a high-temperature fresh water outlet of the diesel generator and a fresh water inlet of the diesel generator are communicated through a fifth fresh water circulating pipeline, a preheater and a third water pump are arranged on the fifth fresh water circulating pipeline, and water in the fifth fresh water circulating pipeline is heated through the preheater to preheat one of the diesel generators;
step two, starting the preheated diesel generator, closing a fifth fresh water circulating pipeline, and opening a third fresh water circulating pipeline and a fourth fresh water circulating pipeline; the third fresh water circulation pipeline is sequentially connected with a preheated high-temperature fresh water outlet of the diesel generator, a fresh water inlet of the diesel engine, a high-temperature fresh water outlet of the diesel engine, a second water pump, a second cooler and a fresh water inlet of the diesel generator; the fourth fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the preheated diesel generator, a second water pump, a second cooler and a fresh water inlet of the diesel generator; the heat generated by the diesel generator heats the water in the third fresh water circulating pipeline to preheat the diesel engine;
step three, starting the diesel engine, closing a third fresh water circulating pipeline, and opening a second fresh water circulating pipeline; the second fresh water circulating pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine, the first cooler, the first water pump and a fresh water inlet of the diesel engine;
opening a first fresh water circulation pipeline, wherein the first fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine, a fresh water inlet of the diesel generator, a high-temperature fresh water outlet of the diesel generator, a first water pump and a fresh water inlet of the diesel engine; the heat generated by the diesel engine heats the water in the first fresh water circulating pipeline, and preheats the diesel generator which is not preheated;
step five, starting the diesel generator when the diesel generator reaches the preheating temperature, closing the first fresh water circulation pipeline, and opening a fourth fresh water circulation pipeline of the diesel generator;
and step six, repeating the step four and the step five.
As a preferred technical solution, a first stop valve is arranged between the high-temperature fresh water outlet of the diesel engine and the fresh water inlet of the diesel generator, a second stop valve is arranged between the high-temperature fresh water outlet of the diesel engine and the second water pump, a third stop valve is arranged between the high-temperature fresh water outlet of the diesel engine and the first cooler, a fourth stop valve is arranged between the first water pump and the fresh water inlet of the diesel engine, a fifth stop valve is arranged between the high-temperature fresh water outlet of the diesel generator and the first water pump, a sixth stop valve is arranged between the high-temperature fresh water outlet of the diesel generator and the fresh water inlet of the diesel engine, and a seventh stop valve is arranged before the fresh water inlet of the second cooler and the diesel generator; an eighth stop valve is arranged between the preheater and the fresh water inlet of the diesel generator, and a ninth stop valve is arranged between the high-temperature fresh water outlet of the diesel generator and the third water pump.
As a preferred technical solution, the first fresh water circulating pipeline, the second fresh water circulating pipeline, the third fresh water circulating pipeline, the fourth fresh water circulating pipeline, and the fifth fresh water circulating pipeline are filled with water.
As a preferable technical scheme, the diesel generators are arranged to be 4, and fresh water pipelines of the 4 diesel generators are connected in parallel.
Preferably, the diesel generator includes a first diesel generator, a second diesel generator, a third diesel generator, and a fourth diesel generator.
As a preferred technical scheme, a fresh water inlet of the first diesel generator is connected with a first water inlet branch pipe a and a first water inlet branch pipe B, a fresh water inlet of the second diesel generator is connected with a second water inlet branch pipe a and a second water inlet branch pipe B, a fresh water inlet of the third diesel generator is connected with a third water inlet branch pipe a and a third water inlet branch pipe B, a fresh water inlet of the fourth diesel generator is connected with a fourth water inlet branch pipe a and a fourth water inlet branch pipe B, the first water inlet branch pipe a, the second water inlet branch pipe a, the third water inlet branch pipe a and the fourth water inlet branch pipe a are connected with a first fresh water circulation pipeline and a fifth fresh water circulation pipeline, the first water inlet branch pipe a is provided with a first on-off valve, the second water inlet branch pipe a is provided with a second on-off valve, the third water inlet branch pipe a is provided with a third on-off valve, the fourth water inlet branch pipe a is provided with a fourth on-off valve,
the first water inlet branch pipe B, the second water inlet branch pipe B, the third water inlet branch pipe B and the fourth water inlet branch pipe B are connected with a third fresh water circulating pipeline and a fourth fresh water circulating pipeline, the first water inlet branch pipe B is provided with a fifth on-off valve, the second water inlet branch pipe B is provided with a sixth on-off valve, the third water inlet branch pipe B is provided with a seventh on-off valve, the fourth water inlet branch pipe B is provided with an eighth on-off valve,
a high-temperature fresh water outlet of the first diesel generator is connected with a first drainage branch pipe A, a first drainage branch pipe B and a first drainage branch pipe C, a high-temperature fresh water outlet of the second diesel generator is connected with a second drainage branch pipe A, a second drainage branch pipe B and a second drainage branch pipe C, a high-temperature fresh water outlet of the third diesel generator is connected with a third drainage branch pipe A, a third drainage branch pipe B and a third drainage branch pipe C, a high-temperature fresh water outlet of the fourth diesel generator is connected with a fourth drainage branch pipe A, a fourth drainage branch pipe B and a fourth drainage branch pipe C, the first drainage branch pipe A, the second drainage branch pipe A, the third drainage branch pipe A and the fourth drainage branch pipe A are connected with a first fresh water circulating pipeline and a third fresh water circulating pipeline, a ninth on-off valve is arranged on the first drainage branch pipe A, a tenth on-off valve is arranged on the second drainage branch pipe A, an eleventh on-off valve is arranged on the third water discharge branch pipe A, a twelfth on-off valve is arranged on the fourth water discharge branch pipe A,
the first drainage branch pipe B, the second drainage branch pipe B, the third drainage branch pipe B and the fourth drainage branch pipe B are connected with a fourth fresh water circulating pipeline, a thirteenth on-off valve is arranged on the first drainage branch pipe B, a fourteenth on-off valve is arranged on the second drainage branch pipe B, a fifteenth on-off valve is arranged on the third drainage branch pipe B, a sixteenth on-off valve is arranged on the fourth drainage branch pipe B,
the first branch drain pipe C is provided with a seventeenth on-off valve, the second branch drain pipe C is provided with an eighteenth on-off valve, the third branch drain pipe C is provided with a nineteenth on-off valve, and the fourth branch drain pipe C is provided with a twentieth on-off valve.
In a second aspect of the present invention, a method for mutually preheating and heating multichannel fresh water of a marine diesel engine and a diesel generator is provided, which comprises the following steps:
step one, the diesel generator and the diesel engine are not started, a high-temperature fresh water outlet of the diesel generator and a fresh water inlet of the diesel generator are communicated through a fifth fresh water circulating pipeline, a preheater and a third water pump are arranged on the fifth fresh water circulating pipeline, and water in the fifth fresh water circulating pipeline is heated through the preheater to preheat one of the diesel generators;
step two, starting the preheated diesel generator, closing a fifth fresh water circulating pipeline, and opening a third fresh water circulating pipeline and a fourth fresh water circulating pipeline; the third fresh water circulation pipeline is sequentially connected with a preheated high-temperature fresh water outlet of the diesel generator, a fresh water inlet of the diesel engine, a high-temperature fresh water outlet of the diesel engine, a second water pump, a second cooler and a fresh water inlet of the diesel generator; the fourth fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the preheated diesel generator, a second water pump, a second cooler and a fresh water inlet of the diesel generator, and heat generated by the diesel generator in operation heats water in the third fresh water circulation pipeline to preheat the diesel engine;
step three, starting the diesel engine, closing a third fresh water circulating pipeline, and opening a second fresh water circulating pipeline; the second fresh water circulating pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine, the first cooler, the first water pump and a fresh water inlet of the diesel engine;
opening a first fresh water circulation pipeline, wherein the first fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine, a fresh water inlet of the diesel generator, a high-temperature fresh water outlet of the diesel generator, a first water pump and a fresh water inlet of the diesel engine; the heat generated by the diesel engine heats the water in the first fresh water circulating pipeline, and preheats the diesel generator which is not preheated;
step five, starting the diesel generator when the diesel generator reaches the preheating temperature, closing the first fresh water circulation pipeline, and opening a fourth fresh water circulation pipeline of the diesel generator;
and step six, repeating the step four and the step five.
Compared with the prior art, the invention has the beneficial effects that: the invention realizes the mutual heating function of the diesel engine and the diesel generator, when the diesel engine works, the heat generated by the work of the diesel engine is utilized to heat water to preheat the diesel generator, and when the diesel generator works, the heat generated by the work of the diesel generator is utilized to heat water to preheat the diesel engine, thereby reducing the use of a high-power heating unit of the diesel engine. The method has the advantages of rapid mutual preheating speed, reduced ship electric energy consumption, energy saving effect, ship cost saving and convenient operation of a shipman.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electric heating unit of a diesel engine in the background art.
Fig. 2 is a schematic structural diagram of a system for preheating and heating the diesel engine and the diesel generator in a fresh water mutual manner in embodiment 1.
Fig. 3 is a schematic structural diagram of a system for preheating and heating fresh water of a diesel engine and a diesel generator in an embodiment 2.
Wherein the reference numerals are specified as follows: a diesel engine 1, a diesel generator 2, a first water pump 3, a second water pump 4, a third water pump 5, a preheater 6, a second cooler 7, a first cooler 8, a first stop valve 9, a second stop valve 10, a third stop valve 11, a fourth stop valve 12, a fifth stop valve 13, a sixth stop valve 14, a seventh stop valve 15, an eighth stop valve 16, a ninth stop valve 17, a first diesel generator 18, a second diesel generator 19, a third diesel generator 20, a fourth diesel generator 21, a first on-off valve 22, a second on-off valve 23, a third on-off valve 24, a fourth on-off valve 25, a fifth on-off valve 26, a sixth on-off valve 27, a seventh on-off valve 28, an eighth on-off valve 29, a ninth on-off valve 30, a tenth on-off valve 31, an eleventh on-off valve 32, a twelfth on-off valve 33, a thirteenth on-off valve 34, a fourteenth on-off valve 35, a fifteenth on-off valve 36, A sixteenth on-off valve 37, a seventeenth on-off valve 38, an eighteenth on-off valve 39, a nineteenth on-off valve 40, and a twentieth on-off valve 41.
Detailed Description
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Example 1
The embodiment provides a diesel engine and diesel generator fresh water each other is for preheating heating system, and diesel engine 1 and diesel generator 2 are at the during operation, and its inside circulating water that need let in realizes cooling and cooling to diesel engine 1, diesel generator 2's inside.
The preheating and heating system comprises a diesel engine 1, a diesel generator 2, a first fresh water circulating pipeline, a second fresh water circulating pipeline, a third fresh water circulating pipeline, a fourth fresh water circulating pipeline and a fifth fresh water circulating pipeline,
the first fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine 1, a fresh water inlet of the diesel generator 2, a high-temperature fresh water outlet of the diesel generator 2, the first water pump 3 and a fresh water inlet of the diesel engine 1.
The second fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine 1, the first cooler 8, the first water pump 3 and a fresh water inlet of the diesel engine 1.
The third fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel generator 2, a fresh water inlet of the diesel engine 1, a high-temperature fresh water outlet of the diesel engine 1, the second water pump 4, the second cooler 7 and a fresh water inlet of the diesel generator 2.
The fourth fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel generator 2, the second water pump 4, the second cooler 7 and a fresh water inlet of the diesel generator 2.
The fifth fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel generator 2, the third water pump 5, the preheater 6 and a fresh water inlet of the diesel generator 2.
The first fresh water circulating pipeline, the second fresh water circulating pipeline, the third fresh water circulating pipeline, the fourth fresh water circulating pipeline and the fifth fresh water circulating pipeline are controlled to be on and off through valves respectively.
The diesel generators 2 are arranged to be 4, and fresh water pipelines of the 4 diesel generators 2 are connected in parallel.
A first stop valve 9 is arranged between a high-temperature fresh water outlet of the diesel engine 1 and a fresh water inlet of the diesel generator 2, a second stop valve 10 is arranged between the high-temperature fresh water outlet of the diesel engine 1 and the second water pump 4, a third stop valve 11 is arranged between the high-temperature fresh water outlet of the diesel engine 1 and the first cooler 8, a fourth stop valve 12 is arranged between the first water pump 3 and the fresh water inlet of the diesel engine 1, a fifth stop valve 13 is arranged between the high-temperature fresh water outlet of the diesel generator 2 and the first water pump 3, a sixth stop valve 14 is arranged between the high-temperature fresh water outlet of the diesel generator 2 and the fresh water inlet of the diesel engine 1, and a seventh stop valve 15 is arranged in front of the second cooler 7 and the fresh water inlet of the diesel generator 2; an eighth stop valve 16 is arranged between the preheater 6 and the fresh water inlet of the diesel generator 2, and a ninth stop valve 17 is arranged between the high-temperature fresh water outlet of the diesel generator 2 and the third water pump 5. The fourth stop valve 12 and the seventh stop valve 15 are electromagnetic on-off valves.
When the diesel engine 1 normally works and the diesel generator 2 does not work, the first fresh water circulation pipeline (abce) and the second fresh water circulation pipeline (afde) are opened, the third fresh water circulation pipeline (cefgb), the fourth fresh water circulation pipeline (bcg) and the fifth fresh water circulation pipeline are closed, specifically, the first stop valve 9, the third stop valve 11, the fourth stop valve 12 and the fifth stop valve 13 are opened, other stop valves are closed, heat generated by the diesel engine 1 during working is used for heating water, and the diesel generator 2 is preheated.
When the diesel generator 2 normally works and the diesel engine 1 does not work, the third fresh water circulation pipeline and the fourth fresh water circulation pipeline are opened, the first fresh water circulation pipeline, the second fresh water circulation pipeline and the fifth fresh water circulation pipeline are specifically opened by the second stop valve 10, the sixth stop valve 14 and the seventh stop valve 15, other stop valves are closed, heat generated by the work of the diesel generator 2 is used for heating water, and the diesel engine 1 is preheated.
When the diesel engine 1 and the diesel generator 2 do not work, the fifth fresh water circulation pipeline is opened, the first fresh water circulation pipeline, the second fresh water circulation pipeline, the third fresh water circulation pipeline and the fourth fresh water circulation pipeline are closed, specifically, the eighth stop valve 16 and the ninth stop valve 17 are opened, other stop valves are closed, and the diesel generator 2 is preheated by heat generated by the preheater 6.
Example 2
The embodiment provides a diesel engine and diesel generator fresh water each other is preheating system, and the structure of this embodiment is roughly the same with embodiment 1, on embodiment 1's basis, has optimized diesel generator's parallel connection structure, specifically is: the diesel generators include a first diesel generator 18, a second diesel generator 19, a third diesel generator 20, and a fourth diesel generator 21.
A fresh water inlet of the first diesel generator 18 is connected with a first water inlet branch pipe A and a first water inlet branch pipe B, a fresh water inlet of the second diesel generator 19 is connected with a second water inlet branch pipe A and a second water inlet branch pipe B, a fresh water inlet of the third diesel generator 20 is connected with a third water inlet branch pipe A and a third water inlet branch pipe B, a fresh water inlet of the fourth diesel generator 21 is connected with a fourth water inlet branch pipe A and a fourth water inlet branch pipe B, the first water inlet branch pipe A, the second water inlet branch pipe A, the third water inlet branch pipe A and the fourth water inlet branch pipe A are connected with a first fresh water circulating pipeline and a fifth fresh water circulating pipeline, the first water inlet branch pipe A is provided with a first on-off valve 22, the second water inlet branch pipe A is provided with a second on-off valve 23, the third water inlet branch pipe A is provided with a third on-off valve 24, and the fourth water inlet branch pipe A is provided with a fourth on-off valve 25.
The first water inlet branch pipe B, the second water inlet branch pipe B, the third water inlet branch pipe B and the fourth water inlet branch pipe B are connected with a third fresh water circulating pipeline and a fourth fresh water circulating pipeline, a fifth on-off valve 26 is arranged on the first water inlet branch pipe B, a sixth on-off valve 27 is arranged on the second water inlet branch pipe B, a seventh on-off valve 28 is arranged on the third water inlet branch pipe B, and an eighth on-off valve 29 is arranged on the fourth water inlet branch pipe B.
A high-temperature fresh water outlet of a first diesel generator 18 is connected with a first drainage branch pipe A, a first drainage branch pipe B and a first drainage branch pipe C, a high-temperature fresh water outlet of a second diesel generator 19 is connected with a second drainage branch pipe A, a second drainage branch pipe B and a second drainage branch pipe C, a high-temperature fresh water outlet of a third diesel generator 20 is connected with a third drainage branch pipe A, a third drainage branch pipe B and a third drainage branch pipe C, a high-temperature fresh water outlet of a fourth diesel generator 21 is connected with a fourth drainage branch pipe A, a fourth drainage branch pipe B and a fourth drainage branch pipe C, the first drainage branch pipe A, the second drainage branch pipe A, the third drainage branch pipe A and the fourth drainage branch pipe A are connected with a first fresh water circulating pipeline and a third fresh water circulating pipeline, a ninth on-off valve 30 is arranged on the first drainage branch pipe A, a tenth on-off valve 31 is arranged on the second drainage branch pipe A, and an eleventh on-off valve 32 is arranged on the third drainage branch pipe A, the fourth branch drain pipe a is provided with a twelfth on-off valve 33.
The first drainage branch pipe B, the second drainage branch pipe B, the third drainage branch pipe B and the fourth drainage branch pipe B are connected with a fourth fresh water circulating pipeline, a thirteenth on-off valve 34 is arranged on the first drainage branch pipe B, a fourteenth on-off valve 35 is arranged on the second drainage branch pipe B, a fifteenth on-off valve 36 is arranged on the third drainage branch pipe B, and a sixteenth on-off valve 37 is arranged on the fourth drainage branch pipe B.
The first, second, third and fourth branch drain pipes C, C are connected to a fifth fresh water circulation pipeline, the seventeenth on-off valve 38 is disposed on the first branch drain pipe C, the eighteenth on-off valve 39 is disposed on the second branch drain pipe C, the nineteenth on-off valve 40 is disposed on the third branch drain pipe C, and the twentieth on-off valve 41 is disposed on the fourth branch drain pipe C.
The embodiment also provides a method for preheating and heating the marine diesel engine and the diesel generator by using multi-channel fresh water mutually, which comprises the following working processes:
step one, preheating a first diesel generator 18; the diesel engine 1, the first diesel generator 18, the second diesel generator 19 and the third diesel generator 20 are not operated, the first on-off valve 22 and the seventeenth on-off valve 38 are opened, other valves are closed, water circulation is a high-temperature fresh water outlet of the first diesel generator 18, a preheater and a fresh water inlet of the first diesel generator 18, and when the first diesel generator 18 reaches a starting temperature, the first power generation diesel engine 18 operates.
Step two, the first diesel generator 18 preheats the diesel engine; the fifth on-off valve 26, the ninth on-off valve 30, the thirteenth on-off valve 34, the second stop valve 10, the sixth stop valve 14 and the seventh stop valve 15 are opened, other valves are closed, and the first diesel generator 18 preheats the diesel engine 1; at this time, there are two water circulations, the self-circulation of the first diesel generator 18, and the water circulation between the first diesel generator 18 and the diesel engine 1.
Step three, starting the diesel engine; when the diesel engine is preheated to the designated temperature, on the basis of the step two, the second stop valve 10, the sixth stop valve 14 and the thirteenth stop valve 34 are closed, the third stop valve 24 and the fourth stop valve 25 are opened, and the first diesel generator 18 and the diesel engine 1 operate respectively. At this time, there are two water cycles, the self-circulation of the first diesel generator 18 and the self-circulation of the diesel engine 1.
And step four, the diesel engine 1 preheats the second diesel generator 19, and the first stop valve 9, the second stop valve 23, the fourteenth stop valve 35 and the fifth stop valve 13 are opened on the basis of the step three. At this time, there are three water circulations, that is, the self-circulation of the first diesel generator 18, the self-circulation of the diesel engine 1, and the water circulation between the diesel engine 1 and the second diesel generator 19.
Step five, starting the second diesel generator 19; when the second diesel generator 19 reaches the start temperature, the sixth and tenth on-off valves 27 and 31 are opened, and the first, fifth, and fourteenth off- valves 9, 13, and 35 are closed, based on step four. In this case, there are three water circulations, that is, self-circulation of the diesel engine 1, self-circulation of the first diesel generator 18, and self-circulation of the second diesel generator 19.
And step six, the diesel engine 1 preheats the third diesel generator 20, and on the basis of the step five, the first stop valve 9, the third stop valve 24, the fifteenth stop valve 36 and the fifth stop valve 13 are opened. At this time, there are four water circulations, that is, the self-circulation of the first diesel generator 18, the self-circulation of the second diesel generator 19, the self-circulation of the diesel engine 1, and the water circulation between the diesel engine 1 and the third diesel generator 20.
Step seven, starting the third diesel generator 20; when the third diesel generator 20 reaches the start temperature, the seventh on-off valve 28 and the eleventh on-off valve 32 are opened, and the first, fifth, and fifteenth off- valves 9, 13, and 36 are closed, on the basis of step six. At this time, there are four water cycles, namely, the self-circulation of the diesel engine 1, the self-circulation of the first diesel generator 18, the self-circulation of the second diesel generator 19, and the self-circulation of the third diesel generator 20.
And step eight, the diesel engine 1 preheats the fourth diesel generator 21, and on the basis of the step seven, the first stop valve 9, the fourth stop valve 25, the sixteenth stop valve 37 and the fifth stop valve 13 are opened. At this time, there are five water circulations, that is, the self-circulation of the first diesel generator 18, the self-circulation of the second diesel generator 19, the self-circulation of the third diesel generator 20, the self-circulation of the diesel engine 1, and the water circulation between the diesel engine 1 and the fourth diesel generator 21.
Step nine, starting the fourth diesel generator 21; when the fourth diesel generator 21 reaches the start temperature, the eighth on-off valve 29 and the twelfth on-off valve 33 are opened, and the first stop valve 9, the fifth stop valve 13, and the sixteenth on-off valve 37 are closed, based on step eight. At this time, there are five water cycles, namely, the self-circulation of the diesel engine 1, the self-circulation of the first diesel generator 18, the self-circulation of the second diesel generator 19, the self-circulation of the third diesel generator 20, and the self-circulation of the fourth diesel generator 21.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (9)
1. A multi-channel fresh water mutual preheating and heating system for a marine diesel engine and a diesel generator is characterized by comprising the diesel engine, the diesel generator, a first fresh water circulating pipeline, a second fresh water circulating pipeline, a third fresh water circulating pipeline, a fourth fresh water circulating pipeline and a fifth fresh water circulating pipeline,
the first fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine, a fresh water inlet of the diesel generator, a high-temperature fresh water outlet of the diesel generator, the first water pump and a fresh water inlet of the diesel engine;
the second fresh water circulating pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine, the first cooler, the first water pump and a fresh water inlet of the diesel engine;
the third fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel generator, a fresh water inlet of the diesel engine, a high-temperature fresh water outlet of the diesel engine, a second water pump, a second cooler and a fresh water inlet of the diesel generator;
the fourth fresh water circulating pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel generator, a second water pump, a second cooler and a fresh water inlet of the diesel generator;
the fifth fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel generator, the third water pump, the preheater and a fresh water inlet of the diesel generator;
the first fresh water circulating pipeline, the second fresh water circulating pipeline, the third fresh water circulating pipeline, the fourth fresh water circulating pipeline and the fifth fresh water circulating pipeline are controlled to be on and off through valves respectively.
2. The multi-channel fresh water mutual preheating heating system of the marine diesel engine and the diesel generator as claimed in claim 1, it is characterized in that a first stop valve is arranged between the high-temperature fresh water outlet of the diesel engine and the fresh water inlet of the diesel generator, a second stop valve is arranged between the high-temperature fresh water outlet of the diesel engine and the second water pump, a third stop valve is arranged between the high-temperature fresh water outlet of the diesel engine and the first cooler, a fourth stop valve is arranged between the first water pump and the fresh water inlet of the diesel engine, a fifth stop valve is arranged between the high-temperature fresh water outlet of the diesel generator and the first water pump, a sixth stop valve is arranged between the high-temperature fresh water outlet of the diesel generator and the fresh water inlet of the diesel engine, a seventh stop valve is arranged between the second cooler and the fresh water inlet of the diesel generator; an eighth stop valve is arranged between the preheater and the fresh water inlet of the diesel generator, and a ninth stop valve is arranged between the high-temperature fresh water outlet of the diesel generator and the third water pump.
3. The multi-channel mutual fresh water preheating and heating system for the marine diesel engine and the diesel generator according to claim 1, wherein the first fresh water circulating pipeline and the second fresh water circulating pipeline are opened simultaneously, and the third fresh water circulating pipeline, the fourth fresh water circulating pipeline and the fifth fresh water circulating pipeline are closed.
4. The multi-channel mutual fresh water preheating and heating system of the marine diesel engine and the diesel generator according to claim 1, wherein the third fresh water circulating pipeline is simultaneously opened in the fourth fresh water circulating pipeline, and the first fresh water circulating pipeline, the second fresh water circulating pipeline and the fifth fresh water circulating pipeline are closed.
5. The multi-channel mutual fresh water preheating and heating system for the marine diesel engine and the diesel generator according to claim 1, wherein the fifth fresh water circulating pipeline is opened, and the first fresh water circulating pipeline, the second fresh water circulating pipeline, the third fresh water circulating pipeline and the fourth fresh water circulating pipeline are closed.
6. The multi-channel mutual fresh water preheating and heating system for the marine diesel engine and the diesel generator according to claim 1, wherein the first fresh water circulating pipeline, the second fresh water circulating pipeline, the third fresh water circulating pipeline, the fourth fresh water circulating pipeline and the fifth fresh water circulating pipeline are filled with water.
7. The multi-channel fresh water mutual preheating and heating system of the marine diesel engine and the diesel generator according to claim 1, wherein the diesel generator is provided in plurality, and the fresh water pipelines of the plurality of diesel generators are connected in parallel.
8. The multichannel freshwater mutual preheating heating system of the marine diesel engine and the diesel generator as claimed in claim 1, wherein the diesel generator comprises a first diesel generator, a second diesel generator, a third diesel generator, and a fourth diesel generator,
the fresh water inlet of the first diesel generator is connected with a first water inlet branch pipe A and a first water inlet branch pipe B, the fresh water inlet of the second diesel generator is connected with a second water inlet branch pipe A and a second water inlet branch pipe B, the fresh water inlet of the third diesel generator is connected with a third water inlet branch pipe A and a third water inlet branch pipe B, the fresh water inlet of the fourth diesel generator is connected with a fourth water inlet branch pipe A and a fourth water inlet branch pipe B, the first water inlet branch pipe A, the second water inlet branch pipe A, the third water inlet branch pipe A and the fourth water inlet branch pipe A are connected with a first fresh water circulating pipeline and a fifth fresh water circulating pipeline, the first water inlet branch pipe A is provided with a first on-off valve, the second water inlet branch pipe A is provided with a second on-off valve, the third water inlet branch pipe A is provided with a third on-off valve, and the fourth water inlet branch pipe A is provided with a fourth on-off valve,
the first water inlet branch pipe B, the second water inlet branch pipe B, the third water inlet branch pipe B and the fourth water inlet branch pipe B are connected with a third fresh water circulating pipeline and a fourth fresh water circulating pipeline, the first water inlet branch pipe B is provided with a fifth on-off valve, the second water inlet branch pipe B is provided with a sixth on-off valve, the third water inlet branch pipe B is provided with a seventh on-off valve, the fourth water inlet branch pipe B is provided with an eighth on-off valve,
a high-temperature fresh water outlet of the first diesel generator is connected with a first drainage branch pipe A, a first drainage branch pipe B and a first drainage branch pipe C, a high-temperature fresh water outlet of the second diesel generator is connected with a second drainage branch pipe A, a second drainage branch pipe B and a second drainage branch pipe C, a high-temperature fresh water outlet of the third diesel generator is connected with a third drainage branch pipe A, a third drainage branch pipe B and a third drainage branch pipe C, a high-temperature fresh water outlet of the fourth diesel generator is connected with a fourth drainage branch pipe A, a fourth drainage branch pipe B and a fourth drainage branch pipe C, the first drainage branch pipe A, the second drainage branch pipe A, the third drainage branch pipe A and the fourth drainage branch pipe A are connected with a first fresh water circulating pipeline and a third fresh water circulating pipeline, a ninth on-off valve is arranged on the first drainage branch pipe A, a tenth on-off valve is arranged on the second drainage branch pipe A, an eleventh on-off valve is arranged on the third water discharge branch pipe A, a twelfth on-off valve is arranged on the fourth water discharge branch pipe A,
the first drainage branch pipe B, the second drainage branch pipe B, the third drainage branch pipe B and the fourth drainage branch pipe B are connected with a fourth fresh water circulating pipeline, a thirteenth on-off valve is arranged on the first drainage branch pipe B, a fourteenth on-off valve is arranged on the second drainage branch pipe B, a fifteenth on-off valve is arranged on the third drainage branch pipe B, a sixteenth on-off valve is arranged on the fourth drainage branch pipe B,
the first branch drain pipe C is provided with a seventeenth on-off valve, the second branch drain pipe C is provided with an eighteenth on-off valve, the third branch drain pipe C is provided with a nineteenth on-off valve, and the fourth branch drain pipe C is provided with a twentieth on-off valve.
9. A multi-channel fresh water mutual preheating and heating method for a marine diesel engine and a diesel generator is characterized by comprising the following steps:
step one, the diesel generator and the diesel engine are not started, a high-temperature fresh water outlet of the diesel generator and a fresh water inlet of the diesel generator are communicated through a fifth fresh water circulating pipeline, a preheater and a third water pump are arranged on the fifth fresh water circulating pipeline, and water in the fifth fresh water circulating pipeline is heated through the preheater to preheat one of the diesel generators;
step two, starting the preheated diesel generator, closing a fifth fresh water circulating pipeline, and opening a third fresh water circulating pipeline and a fourth fresh water circulating pipeline; the third fresh water circulation pipeline is sequentially connected with a preheated high-temperature fresh water outlet of the diesel generator, a fresh water inlet of the diesel engine, a high-temperature fresh water outlet of the diesel engine, a second water pump, a second cooler and a fresh water inlet of the diesel generator; the fourth fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the preheated diesel generator, a second water pump, a second cooler and a fresh water inlet of the diesel generator, and heat generated by the diesel generator in operation heats water in the third fresh water circulation pipeline to preheat the diesel engine;
step three, starting the diesel engine, closing a third fresh water circulating pipeline, and opening a second fresh water circulating pipeline; the second fresh water circulating pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine, the first cooler, the first water pump and a fresh water inlet of the diesel engine;
opening a first fresh water circulation pipeline, wherein the first fresh water circulation pipeline is sequentially connected with a high-temperature fresh water outlet of the diesel engine, a fresh water inlet of the diesel generator, a high-temperature fresh water outlet of the diesel generator, a first water pump and a fresh water inlet of the diesel engine; the heat generated by the diesel engine heats the water in the first fresh water circulating pipeline, and preheats the diesel generator which is not preheated;
step five, starting the diesel generator when the diesel generator reaches the preheating temperature, closing the first fresh water circulation pipeline, and opening a fourth fresh water circulation pipeline of the diesel generator;
and step six, repeating the step four and the step five.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4424775A (en) * | 1981-11-09 | 1984-01-10 | Microphor, Inc. | Apparatus for maintaining a diesel engine in restarting condition |
| US4756359A (en) * | 1986-06-02 | 1988-07-12 | Pony Pack, Inc. | Auxiliary air conditioning, heating and engine warming system for vehicles |
| US4762170A (en) * | 1987-11-16 | 1988-08-09 | Paccar Inc. | Auxiliary power system for trucks and other heavy duty vehicles |
| CN2798378Y (en) * | 2005-06-02 | 2006-07-19 | 泰豪科技股份有限公司 | Reciprocal internetwork combined power station |
| CN201318241Y (en) * | 2008-12-05 | 2009-09-30 | 福建泰德机械工业有限公司 | Multinomial preheating system of diesel generator group |
| CN201827002U (en) * | 2010-07-19 | 2011-05-11 | 北京北宇机械设备有限公司 | Novel thermoelectric preheating device for diesel locomotive |
| CN202851232U (en) * | 2012-10-26 | 2013-04-03 | 郑州宇动新能源有限公司 | Forced water circulating and water preheating device of diesel generator |
| CN203146081U (en) * | 2013-04-01 | 2013-08-21 | 常州中和电气有限公司 | Internal combustion locomotive thermoelectric guaranteeing device |
| CN203412640U (en) * | 2013-08-06 | 2014-01-29 | 韩华彬 | Bridge type circulating preheating energy saving device of diesel engine set of petroleum drilling machine |
| CN204532656U (en) * | 2014-12-25 | 2015-08-05 | 上海航盛船舶设计有限公司 | Energy-saving standby generator sets diesel engine pre-heating system |
| CN205225557U (en) * | 2015-10-29 | 2016-05-11 | 大连船舶重工集团有限公司 | Cylinder liner system of preheating before reserve start -up of boats and ships auxiliary engine |
| CN206555055U (en) * | 2017-03-13 | 2017-10-13 | 北京凯迪辰源科技发展有限公司 | A kind of hot car device cold for the diesel-driven generator north |
| CN206785536U (en) * | 2017-05-29 | 2017-12-22 | 济南吉美乐电源技术有限公司 | A kind of heater of general small-power water-cooled generator group cold-starting |
| US20180306159A1 (en) * | 2015-11-27 | 2018-10-25 | Canadian Environmental Technologies Inc. | Auxiliary power system for vehicle |
-
2021
- 2021-06-28 CN CN202110719623.4A patent/CN113669185B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4424775A (en) * | 1981-11-09 | 1984-01-10 | Microphor, Inc. | Apparatus for maintaining a diesel engine in restarting condition |
| US4756359A (en) * | 1986-06-02 | 1988-07-12 | Pony Pack, Inc. | Auxiliary air conditioning, heating and engine warming system for vehicles |
| US4762170A (en) * | 1987-11-16 | 1988-08-09 | Paccar Inc. | Auxiliary power system for trucks and other heavy duty vehicles |
| CN2798378Y (en) * | 2005-06-02 | 2006-07-19 | 泰豪科技股份有限公司 | Reciprocal internetwork combined power station |
| CN201318241Y (en) * | 2008-12-05 | 2009-09-30 | 福建泰德机械工业有限公司 | Multinomial preheating system of diesel generator group |
| CN201827002U (en) * | 2010-07-19 | 2011-05-11 | 北京北宇机械设备有限公司 | Novel thermoelectric preheating device for diesel locomotive |
| CN202851232U (en) * | 2012-10-26 | 2013-04-03 | 郑州宇动新能源有限公司 | Forced water circulating and water preheating device of diesel generator |
| CN203146081U (en) * | 2013-04-01 | 2013-08-21 | 常州中和电气有限公司 | Internal combustion locomotive thermoelectric guaranteeing device |
| CN203412640U (en) * | 2013-08-06 | 2014-01-29 | 韩华彬 | Bridge type circulating preheating energy saving device of diesel engine set of petroleum drilling machine |
| CN204532656U (en) * | 2014-12-25 | 2015-08-05 | 上海航盛船舶设计有限公司 | Energy-saving standby generator sets diesel engine pre-heating system |
| CN205225557U (en) * | 2015-10-29 | 2016-05-11 | 大连船舶重工集团有限公司 | Cylinder liner system of preheating before reserve start -up of boats and ships auxiliary engine |
| US20180306159A1 (en) * | 2015-11-27 | 2018-10-25 | Canadian Environmental Technologies Inc. | Auxiliary power system for vehicle |
| CN206555055U (en) * | 2017-03-13 | 2017-10-13 | 北京凯迪辰源科技发展有限公司 | A kind of hot car device cold for the diesel-driven generator north |
| CN206785536U (en) * | 2017-05-29 | 2017-12-22 | 济南吉美乐电源技术有限公司 | A kind of heater of general small-power water-cooled generator group cold-starting |
Non-Patent Citations (4)
| Title |
|---|
| 唐庆德: "38000t系列船发电机缸套的预热问题", 《广船科技》 * |
| 荀向红: "某型柴油发电机组冷却水系统故障及改进措施", 《柴油机》 * |
| 董志忠等: "内燃机车柴油机的预热", 《铁道机车车辆》 * |
| 钮志峰: "发电厂柴油发电机启动异常的处理", 《华电技术》 * |
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