CN113431722A - Low-temperature starting preheating system of diesel generator - Google Patents
Low-temperature starting preheating system of diesel generator Download PDFInfo
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- CN113431722A CN113431722A CN202110827277.1A CN202110827277A CN113431722A CN 113431722 A CN113431722 A CN 113431722A CN 202110827277 A CN202110827277 A CN 202110827277A CN 113431722 A CN113431722 A CN 113431722A
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- 238000000034 method Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
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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 Eletrric Generators (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a low-temperature starting preheating system of a diesel generator, which relates to the technical field of generators, and is characterized in that different temperature threshold value intervals are set, and the temperature threshold value intervals are respectively corresponding to the rotating speed magnitude of a crankshaft, so that when the diesel generator needs to be preheated, the corresponding rotating speed of the crankshaft corresponding to the rotating speed magnitude of the crankshaft can be selected automatically according to the corresponding temperature threshold value intervals in the preheating process of the diesel generator, and the crankshaft can generate certain heat in the rotating process, so that the preheating system can be assisted to finish the preheating process more quickly, the complementary effect is achieved, the preheating efficiency is improved, meanwhile, the diesel generator can be started without waiting for preheating, and the starting time is shortened.
Description
Technical Field
The invention belongs to the technical field of generators, and particularly relates to a low-temperature starting preheating system of a diesel generator.
Background
The prime motor of the diesel generator is a diesel engine, and for large and medium-sized air-cooled diesel engines, a direct-current motor is generally used for starting, a storage battery is used as a power supply, and a special direct-current starting motor is used for dragging a generator crankshaft to rotate so as to start the diesel engine. Under the low temperature environment, because the temperature of the engine body is too low, the heat dissipation is fast, the rotating speed of the crankshaft is low when the diesel engine is started, and the temperature and the pressure in the cylinder are too low when the compression stroke of the cylinder of the diesel engine is finished due to too low temperature of the sucked air, on one hand, the spontaneous combustion ignition temperature of fuel oil cannot be reached, on the other hand, the atomization of the fuel oil is not good, the diesel oil is not easy to explode and burn, the combustion power is unstable when the diesel engine is started, and the diesel engine is difficult to start.
In the prior art, the diesel generator is generally heated directly in the preheating process of the diesel generator, and when the diesel generator is heated to a certain temperature threshold value, the diesel generator is started, so that the heating efficiency is low, and meanwhile, the starting time of the diesel generator is influenced.
Disclosure of Invention
The invention aims to provide a low-temperature starting preheating system of a diesel generator.
The technical problems to be solved by the invention are as follows: how to improve the preheating efficiency of the diesel generator and enable the diesel generator to be started in the preheating process, thereby shortening the starting time of the diesel generator.
The purpose of the invention can be realized by the following technical scheme: a low-temperature starting preheating system of a diesel generator comprises a database, a temperature acquisition module, a temperature analysis module, a constant temperature module, a rotating speed adjusting module and a control center;
a temperature and speed matching model is established in the database;
the temperature acquisition module is used for acquiring temperature data of the diesel generator and the environment where the diesel generator is located before the diesel generator is started;
the temperature analysis module is used for analyzing the data acquired by the temperature acquisition module and generating a relevant execution instruction, and the specific analysis process comprises the following steps:
firstly, judging whether the environment where the diesel generator is located is a low-temperature environment or not according to the temperature HW of the environment where the diesel generator is located, and meanwhile, obtaining a temperature threshold interval corresponding to the HW; if the temperature of the environment where the diesel generator is located is a low-temperature environment, a temperature adjusting instruction is sent to the constant-temperature module; respectively matching the surface temperature BW and the internal temperature NW of the diesel generator with a low-temperature environment standard to obtain corresponding temperature threshold intervals, and marking the temperature threshold intervals; when the temperature threshold value interval corresponding to the surface temperature BW and the internal temperature NW respectively and the temperature threshold value interval corresponding to the temperature HW of the environment where the diesel generator is located are the same temperature threshold value interval, marking the crankshaft rotation speed magnitude corresponding to the temperature threshold value interval; when the temperature threshold interval corresponding to the surface temperature BW and the internal temperature NW respectively is not the same temperature threshold interval as the temperature threshold interval corresponding to the temperature HW of the environment where the diesel generator is located, comparing the BW, the NW and the HW, and marking the lowest temperature value, so as to obtain the corresponding crankshaft rotation speed magnitude;
the constant temperature module is used for preheating the diesel generator in a low-temperature environment;
and the rotating speed adjusting module is used for adjusting the rotating speed of the crankshaft according to the temperature analysis module.
As a further aspect of the present invention, the process of establishing the temperature-velocity matching model includes:
the method comprises the steps of firstly establishing a low-temperature environment standard, specifically a first-stage low temperature, a second-stage low temperature and a third-stage low temperature, wherein the first-stage low temperature, the second-stage low temperature and the third-stage low temperature respectively correspond to temperature threshold ranges (— ∞, T1), (T1, T2) and (T2, T3), then establishing a crankshaft rotation speed magnitude of a diesel generator, wherein the crankshaft rotation speed magnitude is divided into a first-stage rotation speed, a second-stage rotation speed and a third-stage rotation speed, the first-stage rotation speed, the second-stage rotation speed and the third-stage rotation speed are respectively marked as V1, V2 and V3, and finally matching the first-stage low temperature, the second-stage low temperature and the third-stage low temperature with the first-stage rotation speed, the second-stage rotation speed and the third-stage rotation speed respectively to generate a temperature and speed matching model.
As a further aspect of the present invention, the process of acquiring the temperature data of the diesel generator and the environment where the diesel generator is located includes:
acquiring the temperature of the environment where the diesel generator is located, and marking the temperature of the environment where the diesel generator is located as HW; the surface temperature and the internal temperature of the diesel generator are obtained, and are respectively marked as BW and NW.
As a further aspect of the present invention, the preheating process comprises: by setting a temperature threshold CT, wherein CT is greater than T3, when the environment where the diesel generator is located is a low-temperature environment, the diesel generator is preheated through the constant-temperature module, the internal temperature NW1 of the diesel generator is obtained in real time, and when NW1 is not less than CT, heating of the diesel generator is stopped.
As a further aspect of the present invention, the process of adjusting the rotational speed of the crankshaft includes: obtaining an analysis result of the temperature analysis module and obtaining a rotating speed adjustment instruction sent by the temperature analysis module; and acquiring a marked temperature threshold interval according to the rotating speed adjusting instruction, and adjusting the rotating speed of the crankshaft of the diesel generator to a rotating speed value corresponding to the rotating speed magnitude of the crankshaft according to the rotating speed magnitude corresponding to the temperature threshold interval.
The invention has the beneficial effects that: in the traditional technology, the diesel generator is generally heated directly in the preheating process of the diesel generator, and the diesel generator is started when the diesel generator is heated to a certain temperature threshold, so that the heating efficiency is low, and the starting time of the diesel generator is influenced; the invention sets different temperature threshold value intervals and respectively corresponds the temperature threshold value intervals to the crankshaft rotating speed magnitude, so that when the diesel generator needs to be preheated, the diesel generator can automatically select the crankshaft rotating speed corresponding to the corresponding crankshaft rotating speed magnitude according to the corresponding temperature threshold value intervals in the preheating process, and the crankshaft can generate certain heat in the rotating process, thereby assisting the preheating system to complete the preheating process more quickly, playing a complementary role, improving the preheating efficiency, simultaneously starting the diesel generator without waiting for the preheating to complete, and shortening the starting time.
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 block diagram of a low temperature start preheating system for a diesel generator.
Detailed Description
As shown in fig. 1, a low-temperature starting preheating system of a diesel generator comprises a database, a temperature acquisition module, a temperature analysis module, a constant temperature module, a rotating speed regulation module and a control center;
in the actual use process, when the control center receives an instruction for starting the diesel generator to work, the control center starts the low-temperature starting preheating system of the diesel generator so as to finish the normal starting of the diesel generator;
establishing a temperature and speed matching model in a database, wherein the establishment process of the temperature and speed matching model comprises the following steps:
step S1: establishing a low-temperature environment standard, wherein the low-temperature environment standard specifically comprises a first-level low temperature, a second-level low temperature and a third-level low temperature, and the first-level low temperature, the second-level low temperature and the third-level low temperature respectively correspond to temperature threshold intervals (— ∞, T1], (T1, T2) and (T2, T3], wherein T1 is more than T2 and more than T3;
step S2: establishing a crankshaft rotation speed magnitude of the diesel generator, wherein the crankshaft rotation speed magnitude is divided into a first-level rotation speed, a second-level rotation speed and a third-level rotation speed, and the first-level rotation speed, the second-level rotation speed and the third-level rotation speed are respectively marked as V1, V2 and V3, wherein V1 is more than 0 and V2 is more than V3;
step S3: and respectively matching the first-stage low temperature, the second-stage low temperature and the third-stage low temperature with the first-stage rotating speed, the second-stage rotating speed and the third-stage rotating speed to generate a temperature and speed matching model.
Before starting the diesel generator, temperature data of the diesel generator and the environment where the diesel generator is located are obtained through a temperature acquisition module, and the specific obtaining process comprises the following steps:
step C1: acquiring the temperature of the environment where the diesel generator is located, and marking the temperature of the environment where the diesel generator is located as HW;
step C2: acquiring the surface temperature and the internal temperature of the diesel generator, and marking the surface temperature and the internal temperature of the diesel generator as BW and NW respectively;
step C3: and sending the data obtained in the steps C1-C2 to a temperature analysis module.
The temperature analysis module is used for analyzing the data acquired by the temperature acquisition module and generating a relevant execution instruction, and the specific analysis process comprises the following steps:
step X1: matching the obtained temperature HW of the environment where the diesel generator is located with a low-temperature environment standard;
step X2: when HW is more than T3, the temperature of the environment where the diesel generator is located is judged not to be a low-temperature environment, and a diesel generator starting instruction is sent to the control center;
step X3: when the HW is in a certain temperature threshold interval, judging that the temperature of the environment where the diesel generator is located is a low-temperature environment, sending a temperature adjusting instruction to a constant temperature module, marking the temperature threshold interval, and then carrying out the next step;
step X4: respectively matching the surface temperature BW and the internal temperature NW of the diesel generator with a low-temperature environment standard, and marking temperature threshold intervals respectively corresponding to the surface temperature BW and the internal temperature NW of the diesel generator;
step X5: matching the temperature threshold intervals respectively corresponding to the surface temperature, the internal temperature BW and the NW of the diesel generator in the step X4 with the temperature threshold interval corresponding to the temperature HW of the environment where the diesel generator is located;
step X6: when the temperature threshold interval corresponding to the surface temperature BW and the internal temperature NW respectively and the temperature threshold interval corresponding to the temperature HW of the environment where the diesel generator is located are the same temperature threshold interval, marking the crankshaft rotation speed magnitude corresponding to the temperature threshold interval, and sending a rotation speed adjusting instruction to a rotation speed adjusting module;
step X7: when the temperature threshold interval corresponding to the surface temperature BW and the internal temperature NW respectively is not the same temperature threshold interval as the temperature threshold interval corresponding to the temperature HW of the environment where the diesel generator is located, comparing the BW, the NW and the HW, marking the lowest temperature value, thereby obtaining the corresponding crankshaft rotation speed magnitude, and sending a rotation speed adjusting instruction to the rotation speed adjusting module.
The constant temperature module is used for preheating the diesel generator in a low-temperature environment, and by setting a temperature threshold CT, wherein CT is larger than T3, when the environment where the diesel generator is located is the low-temperature environment, the diesel generator is preheated through the constant temperature module, the internal temperature NW1 of the diesel generator is obtained in real time, and when NW1 is larger than or equal to CT, heating of the diesel generator is stopped;
the rotating speed adjusting module is used for adjusting the rotating speed of the crankshaft according to the temperature analysis module, acquiring an analysis result of the temperature analysis module and acquiring a rotating speed adjusting instruction sent by the temperature analysis module; and acquiring a marked temperature threshold interval according to the rotating speed adjusting command, and adjusting the crankshaft rotating speed of the diesel generator to a rotating speed value V1, V2 or V3 corresponding to the crankshaft rotating speed level according to the crankshaft rotating speed level corresponding to the temperature threshold interval.
The foregoing is illustrative and explanatory of the structure of the invention, and various modifications, additions or substitutions in a similar manner to the specific embodiments described may be made by those skilled in the art without departing from the structure or scope of the invention as defined in the claims. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and there may be other divisions when the actual implementation is performed; the modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the method of the embodiment.
It will also be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.
Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware. The terms second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above examples are only intended to illustrate the technical process of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical process of the present invention without departing from the spirit and scope of the technical process of the present invention.
Claims (5)
1. A low-temperature starting preheating system of a diesel generator is characterized by comprising a database, a temperature acquisition module, a temperature analysis module, a constant temperature module, a rotating speed regulation module and a control center;
a temperature and speed matching model is established in the database;
the temperature acquisition module is used for acquiring temperature data of the diesel generator and the environment where the diesel generator is located before the diesel generator is started;
the temperature analysis module is used for analyzing the data acquired by the temperature acquisition module and generating a relevant execution instruction, and the specific analysis process comprises the following steps:
firstly, judging whether the environment where the diesel generator is located is a low-temperature environment or not according to the temperature HW of the environment where the diesel generator is located, and meanwhile, obtaining a temperature threshold interval corresponding to the HW; if the temperature of the environment where the diesel generator is located is a low-temperature environment, a temperature adjusting instruction is sent to the constant-temperature module; respectively matching the surface temperature BW and the internal temperature NW of the diesel generator with a low-temperature environment standard to obtain corresponding temperature threshold intervals, and marking the temperature threshold intervals; when the temperature threshold value interval corresponding to the surface temperature BW and the internal temperature NW respectively and the temperature threshold value interval corresponding to the temperature HW of the environment where the diesel generator is located are the same temperature threshold value interval, marking the crankshaft rotation speed magnitude corresponding to the temperature threshold value interval; when the temperature threshold interval corresponding to the surface temperature BW and the internal temperature NW respectively is not the same temperature threshold interval as the temperature threshold interval corresponding to the temperature HW of the environment where the diesel generator is located, comparing the BW, the NW and the HW, and marking the lowest temperature value, so as to obtain the corresponding crankshaft rotation speed magnitude;
the constant temperature module is used for preheating the diesel generator in a low-temperature environment;
and the rotating speed adjusting module is used for adjusting the rotating speed of the crankshaft according to the temperature analysis module.
2. The diesel generator cold-start preheating system as set forth in claim 1, wherein the establishment process of the temperature-speed matching model comprises:
the method comprises the steps of firstly establishing a low-temperature environment standard, specifically a first-stage low temperature, a second-stage low temperature and a third-stage low temperature, wherein the first-stage low temperature, the second-stage low temperature and the third-stage low temperature respectively correspond to temperature threshold ranges (— ∞, T1), (T1, T2) and (T2, T3), then establishing a crankshaft rotation speed magnitude of a diesel generator, wherein the crankshaft rotation speed magnitude is divided into a first-stage rotation speed, a second-stage rotation speed and a third-stage rotation speed, the first-stage rotation speed, the second-stage rotation speed and the third-stage rotation speed are respectively marked as V1, V2 and V3, and finally matching the first-stage low temperature, the second-stage low temperature and the third-stage low temperature with the first-stage rotation speed, the second-stage rotation speed and the third-stage rotation speed respectively to generate a temperature and speed matching model.
3. The diesel generator low-temperature starting preheating system as claimed in claim 1, wherein the process of acquiring the temperature data of the diesel generator and the environment in which the diesel generator is located comprises:
acquiring the temperature of the environment where the diesel generator is located, and marking the temperature of the environment where the diesel generator is located as HW; the surface temperature and the internal temperature of the diesel generator are obtained, and are respectively marked as BW and NW.
4. The diesel generator cold-start preheating system as set forth in claim 1, wherein the preheating process comprises: by setting a temperature threshold CT, wherein CT is greater than T3, when the environment where the diesel generator is located is a low-temperature environment, the diesel generator is preheated through the constant-temperature module, the internal temperature NW1 of the diesel generator is obtained in real time, and when NW1 is not less than CT, heating of the diesel generator is stopped.
5. The low-temperature starting preheating system for the diesel generator as set forth in claim 1, wherein the adjustment process of the crankshaft rotation speed comprises: obtaining an analysis result of the temperature analysis module and obtaining a rotating speed adjustment instruction sent by the temperature analysis module; and acquiring a marked temperature threshold interval according to the rotating speed adjusting instruction, and adjusting the rotating speed of the crankshaft of the diesel generator to a rotating speed value corresponding to the rotating speed magnitude of the crankshaft according to the rotating speed magnitude corresponding to the temperature threshold interval.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110827277.1A CN113431722B (en) | 2021-07-21 | 2021-07-21 | Low-temperature starting preheating system of diesel generator |
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| CN202110827277.1A CN113431722B (en) | 2021-07-21 | 2021-07-21 | Low-temperature starting preheating system of diesel generator |
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| CN113431722B CN113431722B (en) | 2024-03-12 |
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| US20140263261A1 (en) * | 2013-03-15 | 2014-09-18 | James Hunt | Engine Heater Control System |
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| CN110529320A (en) * | 2019-09-03 | 2019-12-03 | 无锡法尔胜悦能动力有限公司 | Diesel generating set and low-temperature start method with good low temperature starting performance |
| CN112253342A (en) * | 2020-09-30 | 2021-01-22 | 中联重科股份有限公司 | Engine cold start warm-up control system and method |
| CN112727657A (en) * | 2020-12-31 | 2021-04-30 | 东风越野车有限公司 | Vehicle low-temperature auxiliary starting system and control method thereof |
-
2021
- 2021-07-21 CN CN202110827277.1A patent/CN113431722B/en active Active
Patent Citations (8)
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| JPS59221431A (en) * | 1983-05-30 | 1984-12-13 | Hino Motors Ltd | Accelerator for warming-up operation of diesel engine |
| KR20020054813A (en) * | 2000-12-28 | 2002-07-08 | 이계안 | Method and apparatus for a pre-heating controlling in diesel vehicles |
| CN202937396U (en) * | 2012-09-19 | 2013-05-15 | 泰州市凯华柴油发电机组有限公司 | Low temperature starter of diesel generator |
| US20140263261A1 (en) * | 2013-03-15 | 2014-09-18 | James Hunt | Engine Heater Control System |
| CN108150332A (en) * | 2017-12-13 | 2018-06-12 | 中国北方车辆研究所 | Mixed type accumulator cold-starting dynamical system |
| CN110529320A (en) * | 2019-09-03 | 2019-12-03 | 无锡法尔胜悦能动力有限公司 | Diesel generating set and low-temperature start method with good low temperature starting performance |
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| CN113431722B (en) | 2024-03-12 |
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