CN210859018U - Diesel generator set with good low-temperature starting performance - Google Patents
Diesel generator set with good low-temperature starting performance Download PDFInfo
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- CN210859018U CN210859018U CN201921449752.0U CN201921449752U CN210859018U CN 210859018 U CN210859018 U CN 210859018U CN 201921449752 U CN201921449752 U CN 201921449752U CN 210859018 U CN210859018 U CN 210859018U
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Abstract
The utility model relates to a diesel generating set technical field, it discloses a diesel generating set with good low temperature startability, including diesel generating set's controller, be used for respectively carrying out the grid and the fuel air heater that admits air that heat to diesel generating set's engine, be used for carrying out the direct current machine oil heater that heats to diesel generating set's machine oil, be used for carrying out the machine oil temperature sensor that detects, be used for carrying out the air temperature sensor that the temperature detected to ambient temperature to machine oil temperature, just it connects respectively to admit air preheating grid, the fuel air heater that admits air, direct current machine oil heater, machine oil temperature sensor, air temperature sensor the controller. The utility model provides high diesel generating set's low temperature startability has reduced later stage unit maintenance cost simultaneously.
Description
Technical Field
The utility model relates to a diesel generating set technical field, concretely relates to diesel generating set with good low temperature startability.
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 diesel generator set in the prior art has the following problems in use:
firstly, the diesel generator set is started in a compression ignition mode, namely, ignition is carried out by utilizing high temperature generated by compressed gas. However, in a low-temperature environment of 0 ℃ to-40 ℃, the temperature of air sucked into the engine is too low, so that the starting of the diesel generating set is difficult and unstable. In order to improve low-temperature starting performance, an air heating and ether starting system is generally adopted in the existing diesel generator set, but in an actual use environment, the air heating effect is very limited in a low-temperature environment, and the ether starting system is flammable and explosive due to the fact that ether belongs to consumables, so that later-stage unit maintenance cost is high, and unstable factors are too many.
Secondly, in a low-temperature environment, the diesel engine needs to replace engine oil with different grades according to the temperature so as to ensure the starting performance of the engine, but the diesel engine is difficult to operate in an actual use environment, a generator set is mostly in a remote area, and the difficulty of engine oil replacement workers is large due to the fact that no commercial power exists or the traffic is inconvenient.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a diesel generating set with good low temperature startability aims at improving diesel generating set's low temperature startability, reduces later stage unit maintenance cost simultaneously. The specific technical scheme is as follows:
a diesel generator set with good low-temperature starting performance comprises a controller of the diesel generator set, an air inlet preheating grid and an air inlet fuel air heater which are used for heating the air sucked into an engine of the diesel generator set respectively, a direct-current engine oil heater used for heating engine oil of the diesel generator set, an engine oil temperature sensor used for detecting the temperature of the engine oil, and an air temperature sensor used for detecting the temperature of the surrounding environment, wherein the air inlet preheating grid, the air inlet fuel air heater, the direct-current engine oil heater, the engine oil temperature sensor and the air temperature sensor are connected with the controller respectively.
Preferably, the air inlet preheating grid is an electric heating type air inlet preheating grid, the air inlet fuel oil air heater is an electric starting type air inlet fuel oil air heater, the direct current engine oil heater is an electric heating type direct current engine oil heater, and power supplies of the electric heating type air inlet preheating grid, the electric starting type air inlet fuel oil air heater and the electric heating type direct current engine oil heater are set starting batteries of the diesel generator set.
The air inlet fuel oil air heater is a device which adopts a unit starting battery to ignite and burn diesel oil or gasoline to heat air, and heats air inlet of the engine under the condition of no auxiliary of external power supplies such as commercial power and the like to improve the low-temperature starting performance of the engine.
Preferably, an air inlet channel for sucking air is arranged on an engine of the diesel generator set, an air filter is arranged on the air inlet channel, the air inlet fuel oil and air heater is connected to an air inlet end of the air filter, and the air inlet preheating grid is connected to an air outlet end of the air filter.
Preferably, the controller is connected with a first relay, a second relay and a third relay respectively, contacts of the first relay are connected in series in a heating circuit of the air inlet preheating grid, contacts of the second relay are connected in series in a heating circuit of the direct current engine oil heater, and contacts of the third relay are connected in series in a control circuit of the air inlet fuel oil air heater.
A low-temperature starting method of a diesel generating set with good low-temperature starting performance comprises the following steps: the heating temperature is determined according to the low-temperature starting characteristic of the engine, and heating devices which are required to be used together for achieving the heating temperature are one, two or three of an air-fuel inlet heater, an air-preheating grid and a direct-current engine oil heater.
As a further improvement of the low-temperature starting method, low-temperature laboratory simulation is carried out in advance, a low-temperature starting test of the diesel generating set is carried out in a temperature interval of 5 ℃ every time in an environment temperature range of 0 ℃ to-40 ℃, a heating device model selection result and a heating time parameter selection result which have the shortest starting time and the minimum battery consumption power in each temperature interval range are obtained, and the heating device model selection result and the heating time parameter selection result obtained by the low-temperature laboratory simulation are applied to the actual low-temperature starting of the diesel generating set.
Preferably, the heating device only needs to start the air inlet preheating grid to heat the air sucked into the engine at the ambient temperature of-5 to-10 ℃, and the heating time of the air inlet preheating grid is controlled to be 4 to 6S by the controller.
Preferably, the heating device only needs to start the air inlet preheating grid to heat the air sucked into the engine at the ambient temperature of-10 to-15 ℃, and the heating time of the air inlet preheating grid is controlled to be 12 to 18S by the controller.
Preferably, at the ambient temperature of-15 to-20 ℃, an air inlet fuel oil air heater and an air inlet preheating grid in the heating device need to be started to heat the air sucked by the engine, and the heating time of the air inlet fuel oil air heater is controlled to be 100 to 140S and the heating time of the air inlet preheating grid is controlled to be 20 to 30S through a controller.
Preferably, at the ambient temperature of-25 to-30 ℃, an air inlet fuel oil air heater and an air inlet preheating grid are required to be started to heat the air sucked by the engine, a direct current engine oil heater is started to heat the engine oil of the diesel generator set, and a controller is used for controlling the heating time of the air inlet fuel oil air heater to be 100 to 140S, the heating time of the air inlet preheating grid to be 20 to 30S and the heating time of the direct current engine oil heater to be 250 to 350S.
The heating device started at low temperature adopts a unit starting battery for power supply, and the performance of the starting battery is reduced at low temperature, so that the working time of the heater equipment is shortened as much as possible, and the consumption of the electric quantity of the battery is reduced as much as possible under the condition of successful starting.
The utility model discloses in, under the controller pressed the condition of starting the button, can automatic control heating device work, do not need human intervention, the automatic start engine after the heating is accomplished, if start unsuccessful cycle last step.
The utility model discloses in, because direct current engine oil heater high temperature can cause the machine oil carbonization to shorten the machine oil life-span, so the increase has set up machine oil temperature sensor to can ensure that machine oil temperature control is in within a range of +25 ~ 30 ℃.
Need change the machine oil of different reference numerals at the temperature interval of difference for traditional diesel generating set and increase the engine at low temperature startability, the utility model discloses owing to increased direct current machine oil heater to can avoid changing the shortcoming of machine oil because of ambient temperature difference, thereby practiced thrift the maintenance cost.
In the utility model, the low-temperature starting auxiliary operation is automatically controlled, thereby avoiding a plurality of problems (such as when to start the heating device, how long to start the heating device, when to close the heating device, and the like) caused by manual operation.
The utility model has the advantages that:
first, the utility model discloses a diesel generating set with good low temperature startability, through increasing the fuel air heater that admits air, admit air preheating grid and direct current machine oil heater, make the controller can be according to outside ambient temperature, heating device and the heat time under this ambient temperature of automatic optimization and reasonable selection, thereby reduce engine start time, shorten engine on-load operating duration, thereby let the engine reach best operating condition in the shortest time, realize closing heating device under engine hot restart condition or normal atmospheric temperature start condition simultaneously.
Second, the utility model discloses a diesel generating set with good low temperature startability compares with traditional air heating and ether starting system, and the security is good, and later stage unit maintenance cost is lower.
Third, the utility model discloses a diesel generating set with good low temperature startability is provided with machine oil temperature sensor for the controller can monitor machine oil temperature, prevents that direct current machine oil heater operating temperature is too high and arouse the machine oil carbonization.
Fourth, the utility model discloses a diesel generating set with good low temperature startability through carrying out the simulation of low temperature test room in advance, obtains the heating device lectotype result and the choice result of heating time parameter that have shortest start-up time and minimum battery power consumption within a definite time at each temperature interval to diesel generating set's low temperature startability has further been improved.
Fifth, the utility model discloses a diesel generating set with good low temperature startability for traditional diesel generating set need increase the engine at low temperature startability at the machine oil of different grade of change in the temperature interval of difference, the utility model discloses owing to increased direct current machine oil heater to can avoid changing the shortcoming of machine oil because of ambient temperature is different, thereby practiced thrift the maintenance cost.
Drawings
Fig. 1 is a low-temperature start control schematic block diagram of a diesel generator set with good low-temperature start performance according to the present invention;
FIG. 2 is a schematic structural diagram of an intake air pre-heating grid, an intake fuel air heater and a direct current engine oil heater arranged on a diesel generator set;
fig. 3 is a low-temperature start control circuit diagram of a diesel generator set with good low-temperature start performance.
In the figure: 1. the engine, 2, the air filter, 3, the engine air inlet;
in the figure: k1 is the first relay, K2 is the second relay, K3 is the third relay, R1 is the air temperature sensor, R2 is the engine oil temperature sensor, D1 is the grid that preheats for admitting air, D2 is direct current engine oil heater, D3 is the fuel air heater of admitting air, E is the unit start battery.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1:
fig. 1 to 3 show that the utility model discloses a diesel generating set's embodiment with good low temperature startability, including diesel generating set's controller, be used for respectively carrying out the intake preheating grid D1 and the fuel air heater D3 that admits air that heats to diesel generating set's engine 1's suction air, be used for carrying out the direct current oil heater D2 that heats to diesel generating set's machine oil, be used for carrying out the machine oil temperature sensor R2 that detects to the machine oil temperature, be used for carrying out the air temperature sensor R1 that temperature detected to ambient temperature, just it connects respectively to admit air preheating grid D1, admit air fuel air heater D3, direct current oil heater D2, machine oil temperature sensor R2, air temperature sensor R1 the controller.
Preferably, the intake air preheating grid D1 is an electric heating type intake air preheating grid, the intake fuel air heater D3 is an electric starting type intake fuel air heater, the direct current engine oil heater D2 is an electric heating type direct current engine oil heater, and a power supply of the electric heating type intake air preheating grid, the electric starting type intake fuel air heater and the electric heating type direct current engine oil heater is a unit starting battery E of the diesel generator set.
The intake fuel oil air heater D3 is a device that heats air by igniting and burning diesel oil or gasoline with a unit start battery, and heats intake air of the engine 1 without the assistance of an external power supply such as a commercial power supply to improve the low-temperature starting performance of the engine 1.
Preferably, an air inlet channel for sucking air is arranged on the engine 1 of the diesel generating set, an air filter 2 is arranged on the air inlet channel, the air inlet fuel oil and air heater D3 is connected at the air inlet end of the air filter 2, and the air inlet preheating grid D1 is connected at the air outlet end of the air filter 2.
Preferably, the controller is connected to a first relay K1, a second relay K2 and a third relay K3, respectively, and contacts of the first relay K1 are connected in series to a heating circuit of the intake air preheating grid D1, contacts of the second relay K2 are connected in series to a heating circuit of the dc engine oil heater D2, and contacts of the third relay K3 are connected in series to a control circuit of the intake fuel oil air heater D3.
Example 2:
a low-temperature starting method for the diesel generator set with good low-temperature starting performance in the embodiment 1 comprises the following steps: the heating temperature is determined according to the low-temperature starting characteristics of the engine 1 and heating devices required to be used together for achieving the heating temperature are one, two or three of an intake fuel air heater D3, an intake pre-heating grid D1 and a direct current engine oil heater D2.
As a further improvement of the low-temperature starting method, low-temperature laboratory simulation is carried out in advance, a low-temperature starting test of the diesel generating set is carried out in a temperature interval of 5 ℃ every time in an environment temperature range of 0 ℃ to-40 ℃, a heating device model selection result and a heating time parameter selection result which have the shortest starting time and the minimum battery consumption power in each temperature interval range are obtained, and the heating device model selection result and the heating time parameter selection result obtained by the low-temperature laboratory simulation are applied to the actual low-temperature starting of the diesel generating set.
Preferably, the heating device only needs to start the intake preheating grid D1 to heat the intake air of the engine 1 at the ambient temperature of-5 to-10 ℃, and the heating time of the intake preheating grid D1 is controlled by the controller to be 4 to 6S.
Preferably, the heating device only needs to start the intake preheating grid D1 to heat the intake air of the engine 1 at the ambient temperature of-10 to-15 ℃, and the heating time of the intake preheating grid D1 is controlled by the controller to be 12 to 18S.
Preferably, the heating device needs to start the intake fuel air heater D3 and the intake preheating grid D1 to heat the intake air of the engine at the ambient temperature of-15 to-20 ℃, and the heating time of the intake fuel air heater D3 is controlled to be 100 to 140S and the heating time of the intake preheating grid D1 is controlled to be 20 to 30S through a controller.
Preferably, at an ambient temperature of-25 to-30 ℃, the intake fuel oil air heater D3 and the intake preheating grid D1 are required to be started to heat the intake air of the engine 1, the direct current engine oil heater D2 is required to be started to heat the engine oil of the diesel generator set, and the controller is used to control the heating time of the intake fuel oil air heater D3 to be 100 to 140S, the heating time of the intake preheating grid D1 to be 20 to 30S, and the heating time of the direct current engine oil heater D2 to be 250 to 350S.
The heating device started at low temperature adopts the unit starting battery E for power supply, and the performance of the starting battery is reduced at low temperature, so that the working time of the heater equipment is shortened as much as possible, and the consumption of the electric quantity of the battery is reduced as much as possible under the condition of successful starting.
In this embodiment, the heating device can be automatically controlled to operate without human intervention when the controller presses the start button, and the engine 1 is automatically started after heating is completed, and the previous step is cycled if the start is unsuccessful.
In the embodiment, the direct current engine oil heater D2 has an excessively high temperature, which causes the carbonization of engine oil and shortens the service life of the engine oil, so that the engine oil temperature sensor R2 is additionally arranged, and the engine oil temperature can be controlled within the range of + 25-30 ℃.
Compared with the traditional diesel generator set, the engine oil with different labels needs to be replaced in different temperature intervals to improve the low-temperature starting performance of the engine, and the direct-current engine oil heater D2 is additionally arranged, so that the defect that the engine oil is replaced due to different environmental temperatures can be overcome, and the maintenance cost is saved.
Example 3:
on the basis of embodiment 2, the low-temperature starting parameters of the diesel generating set at various environmental temperatures are further optimized as follows:
in the heating device, only the air inlet preheating grid D1 is started to heat the air sucked by the engine 1 at the ambient temperature of-5 to-10 ℃, and the heating time of the air inlet preheating grid D1 is controlled to be 5S by the controller.
In the heating device, only the air inlet preheating grid D1 is started to heat the air sucked by the engine 1 at the ambient temperature of-10 to-15 ℃, and the heating time of the air inlet preheating grid D1 is controlled to be 15S by the controller.
In the heating device, an air inlet fuel air heater D3 and an air inlet preheating grid D1 are required to be started to heat air sucked by the engine 1 at the ambient temperature of-15 to-20 ℃, and a controller controls the heating time of the air inlet fuel air heater D3 to be 120S and controls the heating time of the air inlet preheating grid D1 to be 25S.
At the ambient temperature of minus 25 ℃ to minus 30 ℃, an air inlet fuel air heater D3 and an air inlet preheating grid D1 are required to be started to heat the air sucked by the engine 1, a direct current engine oil heater D2 is required to be started to heat the engine oil of the diesel generator set, and a controller is used for controlling the heating time of the air inlet fuel air heater D3 to be 120S, the heating time of the air inlet preheating grid D1 to be 25S and the heating time of the direct current engine oil heater D2 to be 300S.
In the above embodiment, the unit S of the heating time is seconds.
In the embodiment, the low-temperature starting auxiliary operation is automatically controlled, so that the problems caused by manual operation (such as when to start the heating equipment, how long to start the heating equipment, when to shut down the heating equipment and the like) are avoided
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The diesel generator set with good low-temperature starting performance is characterized by comprising a controller of the diesel generator set, an air inlet preheating grid and an air inlet fuel air heater which are used for heating the air sucked into an engine of the diesel generator set respectively, a direct current engine oil heater used for heating engine oil of the diesel generator set, an engine oil temperature sensor used for detecting the temperature of the engine oil, and an air temperature sensor used for detecting the temperature of the ambient environment, wherein the air inlet preheating grid, the air inlet fuel air heater, the direct current engine oil heater, the engine oil temperature sensor and the air temperature sensor are connected with the controller respectively.
2. The diesel generator set with good low-temperature starting performance as set forth in claim 1, wherein the intake air preheating grid is an electrically heated intake air preheating grid, the intake air fuel air heater is an electrically started intake air fuel air heater, the direct current engine oil heater is an electrically heated direct current engine oil heater, and a power supply source of the electrically heated intake air preheating grid, the electrically started intake air fuel air heater and the electrically heated direct current engine oil heater is a set starting battery of the diesel generator set.
3. The diesel generator set with good low-temperature starting performance as set forth in claim 1, wherein an intake passage for sucking air is provided on an engine of the diesel generator set, an air cleaner is provided on the intake passage, the intake fuel air heater is connected to an air inlet end of the air cleaner, and the intake preheating grill is connected to an air outlet end of the air cleaner.
4. The diesel generator set with good low-temperature starting performance as set forth in claim 2, wherein a first relay, a second relay and a third relay are connected to the controller, respectively, and contacts of the first relay are connected in series in the heating circuit of the intake air preheating grid, contacts of the second relay are connected in series in the heating circuit of the dc engine oil heater, and contacts of the third relay are connected in series in the control circuit of the intake air fuel oil air heater.
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| CN201921449752.0U CN210859018U (en) | 2019-09-03 | 2019-09-03 | Diesel generator set with good low-temperature starting performance |
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| CN201921449752.0U CN210859018U (en) | 2019-09-03 | 2019-09-03 | Diesel generator set with good low-temperature starting performance |
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| CN210859018U true CN210859018U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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