CN114233460A - Independent heat dissipation control system and method for engineering machinery - Google Patents
Independent heat dissipation control system and method for engineering machinery Download PDFInfo
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- CN114233460A CN114233460A CN202111620695.XA CN202111620695A CN114233460A CN 114233460 A CN114233460 A CN 114233460A CN 202111620695 A CN202111620695 A CN 202111620695A CN 114233460 A CN114233460 A CN 114233460A
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- Prior art keywords
- heat dissipation
- independent heat
- fan
- controller
- engine
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000010720 hydraulic oil Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000003921 oil Substances 0.000 claims description 11
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 101100500564 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ECM7 gene Proteins 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/13—Ambient temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
An independent heat dissipation control system of engineering machinery comprises a controller, wherein the input end of the controller is connected with a temperature sensor, the output end of the controller is connected with an independent heat dissipation pump, the independent heat dissipation pump is connected with an independent heat dissipation motor, and the independent heat dissipation motor is connected with a fan; the input end of the controller is also connected with an ECM installed on the engine. After the control device and the method are adopted, the rotating speed of the fan is changed from the previous discontinuous jump change to the continuous linear change, so that the internal lubricating effect of the hydraulic device is improved, the loss of the hydraulic device and the fan caused by the sudden rotating speed change is prevented, the service lives of the hydraulic device and the fan are prolonged, and the noise of the whole machine is reduced. In addition, the number of sensors is greatly reduced, the control logic is simple, and the probability of control errors caused by sensor faults or complex control logic is reduced. The independent heat dissipation pump is arranged to make up for the change of the rotating speed of the fan caused by the gear shifting of the engine, so that the rotating speed of the fan is stable.
Description
Technical Field
The invention relates to the technical field of engineering machinery heat dissipation control, in particular to an independent heat dissipation control system for engineering machinery.
Background
With the increasing demand of domestic and foreign mines on large-scale engineering machinery, the trend of large-scale engineering machinery in China is obvious, the conventional direct-connected fan cannot meet the demand of the large-scale engineering machinery, and independent cooling systems are adopted by more and more manufacturers.
The independent heat dissipation control of the domestic engineering machinery is carried out by comparing and calculating data measured by a sensor through a controller, and then controlling an independent heat dissipation pump, a motor or an electromagnetic proportional valve to achieve the purpose of controlling the rotating speed of an independent heat dissipation fan, wherein the control logic is carried out discontinuously in stages. At present, the independent heat dissipation sensor of each engineering machine tool inputs more data, for example, the input of the water dissipation control logic comprises a plurality of parameters such as a high-temperature cooling liquid temperature sensor, a low-temperature cooling liquid temperature sensor, an engine oil temperature sensor and an air intake manifold temperature sensor, the input of the plurality of parameters and the staged control logic can cause the rotating speed of the fan to be suddenly changed, and the rotating speed of the fan continuously jumps between two adjacent rotating speeds under the limit working condition. The fluctuation of the rotating speed can reduce the service life of the fan, the independent heat dissipation pump and the motor and increase the noise of the whole machine.
Disclosure of Invention
In view of the above problems in the prior art, the present invention provides an independent heat dissipation control system and method for engineering machinery, which can prevent the rotating speed of a fan from jumping, thereby improving the internal lubrication effect of a hydraulic device, reducing wear, preventing the loss of the hydraulic device and the fan due to sudden rotating speed change, prolonging the service life of the hydraulic device and the fan, and reducing the noise of the whole machine.
The technical scheme adopted by the invention is as follows: an independent heat dissipation control system of engineering machinery comprises a controller, wherein the input end of the controller is connected with a temperature sensor, the output end of the controller is connected with an independent heat dissipation pump, the independent heat dissipation pump is connected with an independent heat dissipation motor, and the independent heat dissipation motor is connected with a fan; the input end of the controller is also connected with an ECM installed on the engine.
Preferably, the temperature sensor includes an oil/water temperature sensor and an atmospheric temperature sensor.
Preferably, the independent heat dissipation motor and the fan are connected together through a spline.
Preferably, a hydraulic oil filter is arranged between the independent heat dissipation pump and the independent heat dissipation motor.
Preferably, the independent heat dissipation pump is installed on a power take-off port of the engine, and the engine is provided with the transfer case through a coupling.
Preferably, the engine is provided with a transfer case through a coupler, and the independent heat dissipation pump is arranged on one power take-off port of the transfer case.
An independent heat dissipation control method for engineering machinery comprises the following steps:
s1: after the engineering machinery is electrified, the temperature sensor collects the ambient temperature and sends the ambient temperature to the controller;
s2: after receiving the ambient temperature signal, the controller determines the preset rotating speed of the fan and the starting point and the adjusting end point of the fan control curve;
s3: after an engine of the engineering machinery is ignited, the rotating speed of a fan is increased from zero to a preset rotating speed, a temperature sensor collects and collects hydraulic oil temperature and water temperature and sends the hydraulic oil temperature and the water temperature to a controller, the controller judges whether the oil temperature and the water temperature are increased to a starting point, if yes, S4 is executed, and if not, S3 is continuously executed;
s4: the controller controls the fan rotating speed to dynamically and continuously adjust according to the rising amplitude of the hydraulic oil temperature and the water temperature, the fan rotating speed is lifted to an adjustment termination point to the maximum extent, meanwhile, the ECM collects the engine rotating speed, the controller judges whether the engine rotating speed changes, if so, S5 is executed, and if not, S1 is executed;
s5: the controller adjusts the current of the electromagnetic valve of the independent heat dissipation pump, so that the output flow/pressure of the independent heat dissipation pump is kept unchanged, and the rotating speed of the fan is ensured to be stable;
s6: and judging whether the engine is flamed out or not, if so, stopping the operation, and if not, executing the step S1.
The invention has the beneficial effects that: after the control device and the method of the invention are adopted, the rotating speed of the fan is changed from the previous discontinuous jump change to the continuous linear change, thereby improving the internal lubricating effect of the hydraulic device, reducing the abrasion, preventing the loss of the hydraulic device and the fan caused by the sudden rotating speed change, prolonging the service life of the hydraulic device and the fan and reducing the noise of the whole machine. In addition, the number of sensors is greatly reduced, the control logic is simple, and the probability of control errors caused by sensor faults or complex control logic is reduced. The independent heat dissipation pump is arranged to make up for the change of the rotating speed of the fan caused by the gear shifting of the engine, so that the rotating speed of the fan is stable.
Drawings
FIG. 1 is a diagram of an independent heat dissipation control system for an engineering machine according to the present invention;
FIG. 2 is a logic diagram of an independent cooling fan control according to the present invention;
FIG. 3 is a schematic diagram of the control logic of the present invention at different ambient temperatures;
FIG. 4 is a flowchart of an independent heat dissipation control method for an engineering machine according to the present invention;
FIG. 5 is a logic diagram illustrating fan speed and hydraulic oil temperature/coolant temperature control according to the present invention.
Detailed Description
For further explanation of the details of the technical solutions of the present application and their advantages, reference is now made to the accompanying drawings and examples.
As shown in fig. 1, the invention provides an independent heat dissipation control system for engineering machinery, which comprises a controller 4, wherein an input end of the controller 4 is connected with a temperature sensor 5, an output end of the controller 4 is connected with an independent heat dissipation pump 3, the independent heat dissipation pump 3 is connected with an independent heat dissipation motor 2, the independent heat dissipation motor 2 is connected with a fan 1, and an input end of the controller 4 is further connected with an ECM7 installed on an engine 6.
In the present embodiment, the temperature sensor 5 includes an oil/water temperature sensor 8 and an atmospheric temperature sensor 9. The oil/water temperature sensor 8 is used for measuring the temperature and the water temperature of the hydraulic oil, wherein the oil/water temperature sensor 8 is determined according to the type of a radiator in application, and is an oil temperature sensor if the hydraulic oil radiator is controlled; if the engine water radiator is controlled, the water temperature sensor is used. The atmospheric temperature sensor 9 is used to measure the ambient temperature. The independent heat dissipation pump 3 is a variable pump, the independent heat dissipation motor 2 and the fan 1 are connected together through a spline, the rotating speeds of the independent heat dissipation motor 2 and the fan are kept consistent, and the rotating speed of an output shaft of the independent heat dissipation motor 2 is determined by the flow/pressure output by the independent heat dissipation pump 3. The independent heat dissipation pump 3 absorbs oil from a hydraulic oil tank or an auxiliary oil tank, hydraulic oil is output from the independent heat dissipation pump 3 and then drives the independent heat dissipation motor 2 to rotate, and a hydraulic oil outlet of the independent heat dissipation motor 2 flows to a radiator or the hydraulic oil tank.
And a hydraulic oil filter 11 is arranged between the independent heat dissipation pump 3 and the independent heat dissipation motor 2, so that the cleanliness of hydraulic oil is improved, and the service life of the hydraulic device is prolonged. According to the tonnage of the engineering machinery or the number of engine interfaces, the independent heat dissipation pump 2 can be directly arranged on the engine 6, or the independent heat dissipation pump 3 can be arranged on the transfer case 10, and the transfer case 10 is connected with the engine 6 through a coupler.
As shown in fig. 2, the present invention further provides an independent heat dissipation control method for engineering machinery, which is logically different from the previous independent heat dissipation control logic, and as shown in fig. 3, the method includes the following steps:
s1: after the engineering machinery is electrified, the temperature sensor 5 collects the ambient temperature and sends the ambient temperature to the controller 4;
s2: after receiving the ambient temperature signal, the controller 4 determines the preset rotating speed of the fan 1 and the starting point and the adjusting ending point of the fan control curve; the atmospheric temperature sensor 9 detects the ambient temperature, and after receiving the signal, the controller 4 determines that the outside ambient temperature is greater than the ambient temperature at the time of starting the apparatus or the temperature change at the time of adjusting the control curve of the independent cooling fan last time by 5 ℃, and adjusts the start point and the end point of the control curve of the independent cooling fan as shown in fig. 3. When the rotation speed of the fan 1 reaches the maximum (point D in fig. 5), the rotation speed of the fan 1 is kept constant, and the hydraulic oil temperature/coolant temperature changes along the section DE.
S3: after an engine of the engineering machinery is ignited, the rotating speed of a fan 1 is increased from zero to a preset rotating speed, a temperature sensor collects 5 hydraulic oil temperature and water temperature and sends the hydraulic oil temperature and the water temperature to a controller 4, the controller 4 judges whether the oil temperature and the water temperature are increased to a starting point, if yes, S4 is executed, and if not, S3 is continuously executed;
s4: the controller 4 controls the rotation speed of the fan 1 to dynamically and continuously adjust according to the rising amplitude of the hydraulic oil temperature and the water temperature, and the rotation speed of the fan 1 is increased to the adjustment termination point at the highest, as shown in fig. 5, in the independent cooling fan control curve of the present invention, the fan rotation speed and the hydraulic oil temperature/coolant temperature are at point a shown in fig. 5. After the engineering machinery is ignited, the controller 4 outputs a signal to the independent heat dissipation pump 3 to control the current, and the independent heat dissipation pump 3 outputs flow/pressure to control the rotating speed of the independent heat dissipation motor 2, namely the rotating speed of the fan 1. Under the control of the controller 4, the rotating speed of the fan 1 continuously and slowly increases from 0 (point A) to the starting point fan rotating speed (point B) along the section AB, then the rotating speed is stabilized until the hydraulic oil temperature/cooling liquid temperature reaches the starting point (point C) along the section BC, and then the controller 4 controls the rotating speed of the fan 1 to dynamically and continuously adjust in the section CD. Meanwhile, the ECM7 is used for collecting the rotating speed of the engine 6, the controller 4 judges whether the rotating speed of the engine changes, if so, S5 is executed, and if not, S1 is executed;
s5: the controller 4 receives an engine speed signal input from the ECM7 on the engine 6, and if the engine speed signal is detected to change, the rotation speed of the independent heat dissipation pump 3 is also adjusted when the engine speed signal changes, so that the pressure/flow output by the independent heat dissipation pump 3 is affected, and at the moment, the controller adjusts the electromagnetic valve control current of the independent heat dissipation pump 3, so that the pressure/flow output by the stable independent heat dissipation pump 3 is kept unchanged.
S6: and judging whether the engine is flamed out or not, if so, stopping the operation, and if not, executing the step S1.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The independent heat dissipation control system for the engineering machinery comprises a controller (4), and is characterized in that: the input end of the controller (4) is connected with a temperature sensor (5), the output end of the controller (4) is connected with an independent heat dissipation pump (3), the independent heat dissipation pump (3) is connected with an independent heat dissipation motor (2), and the independent heat dissipation motor (2) is connected with a fan (1); the input end of the controller (4) is also connected with an ECM (7) arranged on an engine (6).
2. The independent heat dissipation control system of engineering machinery according to claim 1, wherein: the temperature sensor (5) comprises an oil/water temperature sensor (8) and an atmospheric temperature sensor (9).
3. The independent heat dissipation control system of engineering machinery according to claim 1, wherein: the independent heat dissipation motor (2) is connected with the fan (1) through a spline.
4. The independent heat dissipation control system of engineering machinery according to claim 1, wherein: and a hydraulic oil filter (11) is arranged between the independent heat dissipation pump (3) and the independent heat dissipation motor (2).
5. The independent heat dissipation control system of engineering machinery according to claim 1, wherein: the independent heat dissipation pump (3) is installed on a power take-off port of the engine (6), and the engine (6) is provided with the transfer case (10) through a coupler.
6. The independent heat dissipation control system of engineering machinery according to claim 1, wherein: the engine (6) is provided with a transfer case (10) through a coupler, and the independent heat dissipation pump (3) is arranged on one power take-off opening of the transfer case (10).
7. An independent heat dissipation control method for engineering machinery is characterized in that: the method comprises the following steps:
s1: after the engineering machinery is electrified, the temperature sensor (5) collects the ambient temperature and sends the ambient temperature to the controller (4);
s2: after receiving the ambient temperature signal, the controller (4) determines the preset rotating speed of the fan (1) and the starting point and the adjusting end point of the fan control curve;
s3: after an engine of the engineering machinery is ignited, the rotating speed of a fan (1) is increased from zero to a preset rotating speed, a temperature sensor collects (5) hydraulic oil temperature and water temperature and sends the hydraulic oil temperature and the water temperature to a controller (4), the controller (4) judges whether the oil temperature and the water temperature are increased to a starting point, if yes, S4 is executed, and if not, S3 is continuously executed;
s4: the controller (4) controls the rotation speed of the fan (1) to be dynamically and continuously adjusted according to the rising amplitude of the temperature of hydraulic oil and the water temperature, the rotation speed of the fan (1) is increased to an adjustment termination point to the maximum, meanwhile, the ECM (7) is used for collecting the rotation speed of the engine (6), the controller (4) judges whether the rotation speed of the engine is changed, if so, S5 is executed, and if not, S1 is executed;
s5: the controller (4) adjusts the current of the electromagnetic valve of the independent heat dissipation pump (3) to keep the output flow/pressure of the independent heat dissipation pump (3) unchanged, thereby ensuring the stable rotating speed of the fan (1);
s6: and judging whether the engine is flamed out or not, if so, stopping the operation, and if not, executing the step S1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620695.XA CN114233460A (en) | 2021-12-28 | 2021-12-28 | Independent heat dissipation control system and method for engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111620695.XA CN114233460A (en) | 2021-12-28 | 2021-12-28 | Independent heat dissipation control system and method for engineering machinery |
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| CN114233460A true CN114233460A (en) | 2022-03-25 |
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| CN202111620695.XA Pending CN114233460A (en) | 2021-12-28 | 2021-12-28 | Independent heat dissipation control system and method for engineering machinery |
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|---|---|---|---|---|
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| US20090217655A1 (en) * | 2005-04-07 | 2009-09-03 | Yasuhisa Yabuki | Cooling System for Construction Machine |
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-
2021
- 2021-12-28 CN CN202111620695.XA patent/CN114233460A/en active Pending
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