CN113339174A - Fuel oil heating method for diesel power generation power assembly - Google Patents
Fuel oil heating method for diesel power generation power assembly Download PDFInfo
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- CN113339174A CN113339174A CN202110680222.2A CN202110680222A CN113339174A CN 113339174 A CN113339174 A CN 113339174A CN 202110680222 A CN202110680222 A CN 202110680222A CN 113339174 A CN113339174 A CN 113339174A
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
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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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
- F02M31/042—Combustion air
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention provides a fuel oil heating method of a diesel power generation power assembly, and belongs to the technical field of diesel power generation power assemblies. When the fuel oil heating method of the diesel power generation power assembly is carried out at the ambient temperature of more than-30 ℃, the air inlet temperature of the engine is increased by heating through additionally arranging an air inlet preheating grid, so that the engine can be started smoothly in a low-temperature environment, the water preheating device is started when the ambient temperature is lower than-30 ℃, a water preheating interface is reserved on the engine and is communicated with a circulating water path in the engine, the temperature of a combustion chamber of the engine is increased by heating the fuel oil and electrically heating, finally, an exhaust system is arranged, a telescopic space caused by factors such as thermal expansion, unit displacement, vibration and the like is reserved, and a corrugated pipe is arranged to be used as transitional connection of an exhaust connecting pipe.
Description
Technical Field
The invention relates to the technical field of diesel power generation power assemblies, in particular to a fuel oil heating method of a diesel power generation power assembly.
Background
The diesel generator set is a power generation device using diesel as main fuel, and is a mechanical device which uses a diesel engine as a motive power to drive a generator to generate power and convert kinetic energy into electric energy and heat energy. The starting mode of the diesel generating set is compression ignition, namely ignition is carried out by utilizing high temperature generated by compressed gas. In a low temperature environment, the temperature of the air sucked into the engine is too low, so that the starting of the diesel generator set is difficult and unstable.
When the diesel generating set enters a severe cold region, the diesel generating set is difficult to start due to low external environment temperature, and the diesel generating set cannot be started or the engine oil and cooling water are frozen. Therefore, in order to enable the diesel generator to work normally in severe cold areas, a heating system of the diesel generator set must be added to the generator set, the heating system is also divided into a plurality of types, and if the cooling liquid heating system, the engine oil heating system and the fuel oil heating system are started.
In order to avoid the diesel generator being unable to enter the operating condition at a high speed due to diesel blockage, the outdoor temperature is usually lower than 5 ℃. Taking 0 # diesel as an example, the electric heating function of the diesel generator set is turned on in winter. Because diesel oil contains a certain amount of wax, the wax can be gradually separated out in winter when the temperature is low, and even the diesel oil is coagulated and cannot move. When the wax start end of the diesel oil is separated to block the filter and then affect the normal oil supply of the oil circuit, the temperature at the moment is called the cold filtering point of the diesel oil. Taking 0 # diesel as an example, the condensation point is 0 ℃ and the cold filter plugging point is 4 ℃. Usually, when the outdoor temperature is lower than 5 ℃, the electric heating function is turned on, so that the diesel oil is saturated and can be put into operation at any time. Electrical heating consumes a certain amount of electrical energy. Therefore, it is necessary to turn on the electric heating function at an appropriate temperature so that the diesel generator can be put into operation efficiently at any time
How to invent a fuel oil heating method of a diesel power generation power assembly to improve the problems becomes a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In order to make up for the defects, the invention provides a fuel oil heating method of a diesel power generation power assembly, and aims to solve the problem that a diesel generator normally works due to the influence of the external environment temperature.
The invention is realized by the following steps:
the invention provides a fuel oil heating method of a diesel power generation power assembly, which comprises the following steps:
s1: adding an air inlet preheating grid: the engine is suitable for the environment temperature above minus 30 ℃, and the air inlet temperature of the engine is improved by heating, so that the engine can be smoothly started in a low-temperature environment;
s2: an engine is provided with a water preheating interface;
s3: install water preheating device additional on the unit base, with the engine inner loop water route intercommunication: the temperature of the combustion chamber of the engine is increased by heating the circulating water in the engine at the temperature lower than minus 30 ℃ so that the engine can be started smoothly in a low-temperature environment, and the water preheating device mainly comprises two types of fuel oil heating and electric heating;
s4: arranging an exhaust system: and reserving enough telescopic space during thermal expansion, and installing a corrugated pipe as transitional connection of the exhaust connecting pipe.
In one embodiment of the present invention, the intake air preheating grid in the step S1 is controlled by a preheating relay, and is powered by a 24V power supply.
In one embodiment of the present invention, the control manner of the intake pre-heating grill in step S1 includes 2 manners: firstly, a unit control module is used for preheating control, and preheating time needs to be set manually and is generally 15-60 seconds; one is controlled by an engine ECU, and the preheating time is automatically judged and controlled by the ECU according to the ambient temperature.
In one embodiment of the present invention, the step S3 the fuel heating and preheating device heats the circulating water in the engine by using the heat generated by the combustion of the diesel fuel, and the heat is transferred to the combustion chamber of the engine through the circulating water.
In an embodiment of the present invention, the fuel oil heating device in step S3 needs to be externally connected to a battery power supply, and is mainly applied to special purpose units and field operation units.
In an embodiment of the present invention, in the step S3, the electric heating preheating device heats the circulating water in the engine by using the commercial power, and the heat is transferred to the combustion chamber of the engine by the circulating water, and is mainly applied to a stationary standby unit.
In an embodiment of the present invention, the pipeline of step S3 is far away from the high temperature region of the engine, and by using gravity, the circulating water enters the water inlet of the water preheating device from the low position of the engine, and returns to the high position of the engine from the water outlet of the water preheating device.
In one embodiment of the present invention, the distance between the exhaust pipe and the inflammable substance in the step S4 is greater than or equal to 300 mm.
In one embodiment of the present invention, when the exhaust nozzle must pass through the wall or ceiling in step S4, the exhaust nozzle should be added with a flame retardant sleeve or heat insulation cotton.
In an embodiment of the present invention, the exhaust adapter of step S4 has a slope in its horizontal position, and the lower end is far away from the diesel engine. A rain cover is additionally arranged when the exhaust port of the exhaust connecting pipe is vertically upward.
The invention has the beneficial effects that: the invention firstly adds the air inlet preheating grid, is suitable for the environment temperature above minus 30 ℃, heats and improves the air inlet temperature of the engine, enables the engine to start smoothly in the low temperature environment, if the environment temperature is lower than minus 30 ℃, then starts the water preheating device which is communicated with the internal circulation water path of the engine, improves the temperature of the combustion chamber of the engine through fuel oil heating and electric heating, and finally sets the exhaust system, reserves the expansion space caused by factors such as thermal expansion, unit displacement and vibration, and the like, thus when the diesel generator works in the severe cold area, the diesel generator is not easy to start because of the low external environment temperature, and the engine can not be started or the freezing point of engine oil and cooling water can not cause the engine body frost crack accident.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic flow chart of a fuel heating method for a diesel power generation powertrain according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
Referring to fig. 1, the present invention provides a fuel heating method for a diesel power generation assembly, comprising the following steps:
s1: adding an air inlet preheating grid: the engine is suitable for the environment temperature above minus 30 ℃, and the air inlet temperature of the engine is improved by heating, so that the engine can be smoothly started in a low-temperature environment.
The control mode of the air inlet preheating grid comprises 2 types: firstly, a unit control module is used for preheating control, a controller is a brain part of a generator set, functions of starting, stopping, data measurement, data display and fault protection of an engine are provided, functions of electric quantity measurement, electric quantity display and electric quantity protection of a generator are also provided, and preheating time needs to be set manually and is generally 15-60 seconds; one is controlled by engine ECU, its preheating time is judged and controlled by ECU according to the ambient temperature by oneself, ECU is the electronic control unit, it is the special microcomputer controller of car, ECU collects every part working condition information of the engine through various sensors, send to ECU by the circuit responsible for transmitting, after ECU receives these signals, will analyze various signals, know what state each part function of engine is in, what information of the operational situation, then calculate automatically according to the program written in advance, what should let what the executive component do under this state, then send the order to the executive component, order the executive component to work, the temperature sensor is equipped with two, fix to mount in engine chassis outer casing and engine chassis inside separately, facilitate the temperature inside and outside of overall monitoring engine.
S2: the engine reserves a water preheating interface.
S3: install water preheating device additional on the unit base, with the engine inner loop water route intercommunication: the temperature of the engine combustion chamber is increased by heating the circulating water in the engine at the temperature lower than-30 ℃, so that the engine can be started smoothly in a low-temperature environment.
The water preheating device mainly comprises two types of fuel oil heating and electric heating: the fuel oil heating preheating device in the step S3 heats circulating water in the engine by using heat generated by diesel oil combustion, the heat is transferred to a combustion chamber of the engine through the circulating water, and the fuel oil heating device is required to be externally connected with a storage battery power supply and is mainly applied to special purpose units and field operation units; the step S3 electric heating preheating device heats the circulating water in the engine by using commercial power, the heat is transferred to the combustion chamber of the engine by the circulating water, the electric heating preheating device is mainly applied to a fixed standby unit, the pipeline is far away from the high-temperature area of the engine, and the circulating water enters the water inlet of the water preheating device from the low position of the engine and returns to the high position of the engine from the water outlet of the water preheating device by using gravity.
S4: arranging an exhaust system: an enough telescopic space is reserved during thermal expansion, a corrugated pipe is installed to be used as transition connection of an exhaust connecting pipe, the distance between the exhaust connecting pipe and an inflammable matter is larger than or equal to 300mm, when the exhaust connecting pipe needs to penetrate through a wall or a ceiling, a flame-retardant sleeve or heat-insulating cotton is added to the exhaust connecting pipe, a horizontal part of the exhaust connecting pipe is inclined to a certain degree, and the lower end of the exhaust connecting pipe is far away from a diesel engine. A rain cover is additionally arranged when the exhaust port of the exhaust connecting pipe is vertically upward.
Example 2
Referring to fig. 1, the present invention provides a fuel heating method for a diesel power generation assembly, comprising the following steps:
s1: adding an air inlet preheating grid: the air inlet preheating grid is controlled by a preheating relay and is powered by a 24V power supply.
The control mode of the air inlet preheating grid comprises 2 types: firstly, a unit control module is used for preheating control, a controller is a brain part of a generator set, functions of starting, stopping, data measurement, data display and fault protection of an engine are provided, functions of electric quantity measurement, electric quantity display and electric quantity protection of a generator are also provided, and preheating time needs to be set manually and is generally 15-60 seconds; one is controlled by engine ECU, its preheating time is judged and controlled by ECU according to the ambient temperature by oneself, ECU is the electronic control unit, it is the special microcomputer controller of car, ECU collects every part working condition information of the engine through various sensors, send to ECU by the circuit responsible for transmitting, after ECU receives these signals, will analyze various signals, know what state each part function of engine is in, what information of the operational situation, then calculate automatically according to the program written in advance, what should let what the executive component do under this state, then send the order to the executive component, order the executive component to work, the temperature sensor is equipped with two, fix to mount in engine chassis outer casing and engine chassis inside separately, facilitate the temperature inside and outside of overall monitoring engine.
S2: the engine reserves a water preheating interface.
S3: install water preheating device additional on the unit base, with the engine inner loop water route intercommunication: the temperature of the engine combustion chamber is increased by heating the circulating water in the engine at the temperature lower than-30 ℃, so that the engine can be started smoothly in a low-temperature environment.
The water preheating device mainly comprises two types of fuel oil heating and electric heating: the step S3 is that the fuel oil heating and preheating device heats the circulating water in the engine by using the heat generated by the combustion of the diesel oil, and the heat is transferred to the combustion chamber of the engine through the circulating water; the step S3 electric heating preheating device heats the circulating water in the engine by using commercial power, the heat is transferred to the combustion chamber of the engine by the circulating water, the electric heating preheating device is mainly applied to a fixed standby unit, the pipeline is far away from the high-temperature area of the engine, and the circulating water enters the water inlet of the water preheating device from the low position of the engine and returns to the high position of the engine from the water outlet of the water preheating device by using gravity.
S4: arranging an exhaust system: an enough telescopic space is reserved during thermal expansion, a corrugated pipe is installed to be used as transition connection of an exhaust connecting pipe, the distance between the exhaust connecting pipe and an inflammable matter is larger than or equal to 300mm, when the exhaust connecting pipe needs to penetrate through a wall or a ceiling, a flame-retardant sleeve or heat-insulating cotton is added to the exhaust connecting pipe, a horizontal part of the exhaust connecting pipe is inclined to a certain degree, and the lower end of the exhaust connecting pipe is far away from a diesel engine. A rain cover is additionally arranged when the exhaust port of the exhaust connecting pipe is vertically upward.
Example 3
Referring to fig. 1, the present invention provides a fuel heating method for a diesel power generation assembly, comprising the following steps:
s1: adding an air inlet preheating grid: the air inlet preheating grid is controlled by a preheating relay and is powered by a 24V power supply.
The control mode of the air inlet preheating grid comprises 2 types: firstly, a unit control module is used for preheating control, a controller is a brain part of a generator set, functions of starting, stopping, data measurement, data display and fault protection of an engine are provided, functions of electric quantity measurement, electric quantity display and electric quantity protection of a generator are also provided, and preheating time needs to be set manually and is generally 15-60 seconds; one is controlled by engine ECU, its preheating time is judged and controlled by ECU according to the ambient temperature by oneself, ECU is the electronic control unit, it is the special microcomputer controller of car, ECU collects every part working condition information of the engine through various sensors, send to ECU by the circuit responsible for transmitting, after ECU receives these signals, will analyze various signals, know what state each part function of engine is in, what information of the operational situation, then calculate automatically according to the program written in advance, what should let what the executive component do under this state, then send the order to the executive component, order the executive component to work, the temperature sensor is equipped with two, fix to mount in engine chassis outer casing and engine chassis inside separately, facilitate the temperature inside and outside of overall monitoring engine.
S2: the engine reserves a water preheating interface.
S3: install water preheating device additional on the unit base, with the engine inner loop water route intercommunication: the temperature of the engine combustion chamber is increased by heating the circulating water in the engine at the temperature lower than-30 ℃, so that the engine can be started smoothly in a low-temperature environment.
The water preheating device mainly comprises two types of fuel oil heating and electric heating: the fuel oil heating preheating device in the step S3 heats circulating water in the engine by using heat generated by diesel oil combustion, the heat is transferred to a combustion chamber of the engine through the circulating water, and the fuel oil heating device is required to be externally connected with a storage battery power supply and is mainly applied to special purpose units and field operation units; the step S3 electric heating preheating device heats the circulating water in the engine by using commercial power, the heat is transferred to the combustion chamber of the engine by the circulating water, the electric heating preheating device is mainly applied to a fixed standby unit, the pipeline is far away from the high-temperature area of the engine, and the circulating water enters the water inlet of the water preheating device from the low position of the engine and returns to the high position of the engine from the water outlet of the water preheating device by using gravity.
S4: arranging an exhaust system: an enough telescopic space is reserved during thermal expansion, a corrugated pipe is installed to be used as transition connection of an exhaust connecting pipe, the distance between the exhaust connecting pipe and an inflammable matter is larger than or equal to 300mm, when the exhaust connecting pipe needs to penetrate through a wall or a ceiling, a flame-retardant sleeve or heat-insulating cotton is added to the exhaust connecting pipe, a horizontal part of the exhaust connecting pipe is inclined to a certain degree, and the lower end of the exhaust connecting pipe is far away from a diesel engine. A rain cover is additionally arranged when the exhaust port of the exhaust connecting pipe is vertically upward.
The working principle of the fuel oil heating method of the diesel power generation power assembly is as follows: when the diesel generator is used, an air inlet preheating grid is additionally arranged, the air inlet preheating grid is suitable for the environment temperature of more than-30 ℃, the air inlet temperature of the engine is increased through heating, the engine can be started smoothly in a low-temperature environment, if the environment temperature is lower than-30 ℃, the water preheating device is started and communicated with an internal circulation water channel of the engine, the temperature of a combustion chamber of the engine is increased through fuel oil heating and electric heating, and finally an exhaust system is arranged, a telescopic space caused by factors such as thermal expansion, unit displacement and vibration is reserved, so that when the diesel generator works in a severe cold area, the diesel generator is not easy to start due to low external environment temperature, and the engine cannot be started or the engine oil and cooling water are prevented from being frozen.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fuel oil heating method of a diesel power generation power assembly is characterized by comprising the following steps:
s1: adding an air inlet preheating grid: the engine is suitable for the environment temperature above minus 30 ℃, and the air inlet temperature of the engine is improved by heating, so that the engine can be smoothly started in a low-temperature environment;
s2: an engine is provided with a water preheating interface;
s3: install water preheating device additional on the unit base, with the engine inner loop water route intercommunication: the temperature of the combustion chamber of the engine is increased by heating the circulating water in the engine at the temperature lower than minus 30 ℃ so that the engine can be started smoothly in a low-temperature environment, and the water preheating device mainly comprises two types of fuel oil heating and electric heating;
s4: arranging an exhaust system: and reserving enough telescopic space during thermal expansion, and installing a corrugated pipe as transitional connection of the exhaust connecting pipe.
2. The method as claimed in claim 1, wherein the step S1 is implemented by controlling the inlet pre-heating grille with a pre-heating relay and supplying power from a 24V power source.
3. The method as claimed in claim 1, wherein the step S1 includes 2 control modes of the inlet pre-heating grid: firstly, a unit control module is used for preheating control, and preheating time needs to be set manually and is generally 15-60 seconds; one is controlled by an engine ECU, and the preheating time is automatically judged and controlled by the ECU according to the ambient temperature.
4. The fuel heating method for a diesel power generation powertrain of claim 1, wherein the step S3 the fuel heating and preheating means heats circulating water in the engine by using heat generated by combustion of diesel, and the heat is transferred to a combustion chamber of the engine by the circulating water.
5. The fuel oil heating method of the diesel power generation power assembly according to claim 4, wherein the fuel oil heating device of the step S3 is required to be externally connected with a storage battery power supply and is mainly applied to special purpose units and field operation units.
6. The fuel oil heating method for a diesel power generation powertrain of claim 1, wherein the electrical heating preheating device of step S3 heats circulating water in the engine by using commercial power, and the heat is transferred to the combustion chamber of the engine through the circulating water, and is mainly applied to a stationary backup unit.
7. The method as claimed in claim 6, wherein the pipeline of step S3 is far from the high temperature region of the engine, and the circulating water enters the water inlet of the water preheating device from the low position of the engine and returns to the high position of the engine from the water outlet of the water preheating device by gravity.
8. The method of claim 1, wherein the distance between the exhaust pipe and the inflammable substance in step S4 is not less than 300 mm.
9. The method as claimed in claim 8, wherein the step S4 is performed by adding a flame retardant sleeve or heat insulation cotton to the exhaust adapter when the exhaust adapter has to cross the wall or ceiling.
10. The method of claim 9, wherein the exhaust adapter is inclined at a lower end thereof away from the diesel engine in step S4. A rain cover is additionally arranged when the exhaust port of the exhaust connecting pipe is vertically upward.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087095A (en) * | 2021-11-24 | 2022-02-25 | 葛洲坝能源重工有限公司 | Cold region mobile power pack station black start preheating system |
| CN116357485A (en) * | 2023-05-30 | 2023-06-30 | 潍柴动力股份有限公司 | Engine intake air heating method, engine intake air heating system, storage medium and electronic equipment |
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| CN114087095B (en) * | 2021-11-24 | 2023-02-28 | 葛洲坝能源重工有限公司 | Cold region mobile type power pack station black start preheating system |
| CN116357485A (en) * | 2023-05-30 | 2023-06-30 | 潍柴动力股份有限公司 | Engine intake air heating method, engine intake air heating system, storage medium and electronic equipment |
| CN116357485B (en) * | 2023-05-30 | 2023-09-19 | 潍柴动力股份有限公司 | Engine intake air heating method, engine intake air heating system, storage medium and electronic equipment |
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Application publication date: 20210903 |