CN110159409B - Cooling device, rotary drilling rig and engine cooling method - Google Patents
Cooling device, rotary drilling rig and engine cooling method Download PDFInfo
- Publication number
- CN110159409B CN110159409B CN201910573524.2A CN201910573524A CN110159409B CN 110159409 B CN110159409 B CN 110159409B CN 201910573524 A CN201910573524 A CN 201910573524A CN 110159409 B CN110159409 B CN 110159409B
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- fan
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- heat dissipation
- preset value
- controller
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- 238000001816 cooling Methods 0.000 title claims abstract description 108
- 238000005553 drilling Methods 0.000 title claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 137
- 230000017525 heat dissipation Effects 0.000 claims abstract description 94
- 238000006073 displacement reaction Methods 0.000 claims description 33
- 230000005855 radiation Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000000446 fuel Substances 0.000 description 41
- 239000002826 coolant Substances 0.000 description 39
- 230000007423 decrease Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- 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
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
-
- 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
- F01P7/026—Thermostatic control
-
- 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
- F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
-
- 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
- F01P2025/50—Temperature using two or more temperature sensors
-
- 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
- F01P2025/52—Heat exchanger temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention relates to the technical field of engineering machinery, in particular to a cooling device, a rotary drilling rig and an engine cooling method; the cooling device comprises a variable control mechanism, a fan, a heat dissipation mechanism and a controller, wherein the variable control mechanism is connected with the fan and is used for driving the fan to rotate so as to enable the heat dissipation mechanism to dissipate heat; the variable control mechanism and the heat dissipation mechanism are electrically connected with the controller; the heat dissipation mechanism comprises at least two heat dissipation components, each heat dissipation component comprises a temperature sensor and a radiator, the controller is electrically connected with the temperature sensor, and the temperature sensor is used for detecting the temperature of the radiator; the controller is used for acquiring the temperature of each radiator, and controlling the variable control mechanism to adjust the rotating speed of the fan according to the comparison result of the temperature of each radiator and the preset value; the cooling device, the rotary drilling rig and the engine cooling method can flexibly adjust the rotating speed of the fan according to the temperature of each radiator so that each radiator has good cooling performance.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a cooling device, a rotary drilling rig and an engine cooling method.
Background
The engine of the rotary drilling rig provided by the related art is mostly a diesel engine, and a cooling system used by the engine comprises a cooling liquid radiating component, an air radiating component and a fuel oil radiating component, wherein the three radiating components are usually cooled by cooling air provided by a fan, however, when the radiating components of three different radiating mediums are used for radiating the engine, the radiating components have different radiating capacities, and when the engine radiates, the temperature of each radiating component is different, and then the fans with different rotating speeds are required to ensure that the engine can be effectively radiated, but the related technology is difficult to ensure stable cooling of the engine.
Disclosure of Invention
The invention aims to provide a cooling device, a rotary drilling rig and an engine cooling method, which can adjust the rotating speed of a fan according to the temperature of each radiator in a radiating mechanism, so as to improve the cooling effect of the cooling device and provide more stable cooling for the engine of the rotary drilling rig.
Embodiments of the present invention are implemented as follows:
the variable control mechanism is connected with the fan and is used for driving the fan to rotate so as to enable the heat dissipation mechanism to dissipate heat; the variable control mechanism and the heat dissipation mechanism are electrically connected with the controller; the heat dissipation mechanism comprises at least two heat dissipation components, the heat dissipation media of the heat dissipation components are different, each heat dissipation component comprises a temperature sensor and a radiator, the controller is electrically connected with the temperature sensor, and the temperature sensor is used for detecting the temperature of the radiator; the controller is used for obtaining the temperature of each radiator and controlling the variable control mechanism to adjust the rotating speed of the fan according to the comparison result of the temperature of each radiator and the preset value.
Optionally, the controller is specifically configured to control the variable control mechanism to increase the rotational speed of the fan when at least one sensor detects that the temperature of its corresponding radiator is higher than a preset value and the other sensor detects that the temperature of its corresponding radiator is equal to the preset value.
Optionally, the controller is specifically further configured to control the variable control mechanism to reduce the rotational speed of the fan when at least one sensor detects that the temperature of its corresponding radiator is below a preset value and the other sensor detects that the temperature of its corresponding radiator is equal to the preset value.
Optionally, the controller is specifically further configured to control the variable control mechanism to keep the rotational speed of the fan unchanged when the respective sensor detects that the temperature of the radiator is equal to a preset value.
Optionally, the variable control mechanism comprises a fixed displacement pump, a fixed displacement motor and a proportional overflow valve arranged between the fixed displacement pump and the fixed displacement motor; the fan is in transmission connection with the output shaft of the quantitative motor; the controller is electrically connected with the proportional overflow valve and used for adjusting the opening and closing of the proportional overflow valve so as to control the quantitative motor to adjust the rotating speed of the fan.
Optionally, the variable control mechanism comprises a variable pump and a quantitative motor which are connected with each other, and the fan is in transmission connection with an output shaft of the quantitative motor; the controller is electrically connected with the variable pump and used for controlling the variable pump to drive the quantitative motor to adjust the rotating speed of the fan.
Optionally, the variable control mechanism comprises a constant displacement pump and a variable displacement motor which are connected with each other, and the fan is in transmission connection with an output shaft of the variable displacement motor; the controller is electrically connected with the variable motor and used for controlling the variable motor to adjust the rotating speed of the fan.
Optionally, the variable control mechanism further comprises a reversing valve, and the controller is electrically connected with the reversing valve and used for controlling the reversing valve to determine the steering direction of the fan.
The cooling device is used for cooling the engine of the rotary drilling rig.
An engine cooling method for the cooling device or the rotary drilling machine, comprising the following steps: acquiring the temperature of a heat dissipation mechanism; when the temperature of the heat dissipation mechanism is larger than a preset value, the variable control mechanism is controlled to increase the rotating speed of the fan; when the temperature of the heat dissipation mechanism is smaller than a preset value, the variable control mechanism is controlled to reduce the rotating speed of the fan; when the temperature of the heat dissipation mechanism is equal to a preset value, the control variable control mechanism keeps the rotating speed of the fan unchanged.
The cooling device provided by the embodiment of the invention has the beneficial effects that: the cooling device provided by the embodiment of the invention comprises a variable control mechanism, a fan, a heat dissipation mechanism and a controller, wherein the variable control mechanism is used for driving the fan connected with the variable control mechanism so as to dissipate heat of heat dissipation components of the heat dissipation mechanism by using the fan, the heat dissipation mechanism comprises at least two heat dissipation components, heat dissipation mediums of the heat dissipation components are different, each heat dissipation component comprises a temperature sensor and a radiator, the controller is electrically connected with the temperature sensor, the temperature sensor is used for detecting the temperature of the radiator, and each radiator is used for cooling an engine of mechanical equipment such as a rotary drilling rig and the like; the controller is used for obtaining the temperature of each radiator and controlling the variable control mechanism to adjust the rotating speed of the fan according to the comparison result of the temperature of each radiator and the preset value, so that the rotating speed of the fan can be flexibly adjusted according to the temperature comparison between each radiator and the preset value, and the temperature of each radiator is adjusted, so that the stable and effective cooling capacity of each radiator is ensured.
The rotary drilling rig provided by the embodiment of the invention has the beneficial effects that: the rotary drilling rig provided by the embodiment of the invention comprises the cooling device, wherein the cooling device is used for cooling the engine of the rotary drilling rig, and the cooling device controls the variable control mechanism to adjust the rotating speed of the fan according to the comparison result of the temperature of each radiator and the preset value obtained by the controller, so that the temperature of each radiator can be flexibly controlled, and the cooling mechanism can be used for stably and effectively cooling the engine of the rotary drilling rig.
The engine cooling method of the embodiment of the invention has the beneficial effects that: the engine cooling method provided by the embodiment of the invention is used for the cooling device or the rotary drilling rig, and can control the variable control mechanism to adjust the rotating speed of the fan according to the comparison result of the temperature of each radiator and the preset value obtained by the controller, so that the cooling mechanism can keep stable and effective cooling performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a cooling device according to an embodiment of the present invention;
FIG. 2 is a block diagram of a cooling device according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method of cooling an engine in accordance with an embodiment of the present invention;
FIG. 4 is a second flowchart of an engine cooling method according to an embodiment of the present invention.
Icon: 010-cooling means; 100-variable control mechanism; 200-fans; 300-a controller; 400-a heat dissipation mechanism; 410-a heat sink assembly; 411-temperature sensor; 412-a heat sink; 110-a fixed displacement pump; 120-a quantitative motor; 130-a proportional overflow valve; 101-a hydraulic pump; 102-a motor; 140-reversing valve.
Detailed Description
For the purpose of making 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 clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In describing embodiments of the present invention, it should be noted that terms indicating an orientation or a positional relationship are based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, the present embodiment provides a cooling device 010, which can be used for cooling an engine of a mechanical device such as a rotary drilling machine.
Referring to fig. 1 and 2, the cooling device 010 of the present embodiment includes a variable control mechanism 100, a fan 200, a heat dissipation mechanism 400, and a controller 300, wherein the variable control mechanism 100 is connected to the fan 200 for driving the fan 200 to rotate so as to dissipate heat of the heat dissipation mechanism 400; the variable control mechanism 100 and the heat dissipation mechanism 400 are electrically connected with the controller 300; the heat dissipation mechanism 400 includes at least two heat dissipation components 410, and the heat dissipation media of the heat dissipation components 410 are different, each heat dissipation component 410 includes a temperature sensor 411 and a heat sink 412, the controller 300 is electrically connected to the temperature sensor 411, and the temperature sensor 411 is used for detecting the temperature of the heat sink 412; the controller 300 is configured to obtain the temperature of each radiator 412, and control the variable control mechanism 100 to adjust the rotation speed of the fan 200 according to the comparison result between the temperature of each radiator 412 and the preset value. The heat sinks 412 of the heat dissipation mechanism 400 are used to cool the engine of the mechanical equipment such as the rotary drilling machine.
After the temperature of each radiator 412 is obtained, the controller 300 of the cooling device 010 of the present embodiment compares the temperature of each radiator 412 with a preset value, so that the variable control mechanism 100 can be controlled to adjust the rotation speed of the fan 200 according to the comparison result of the temperature of each radiator 412 and the preset value, thereby flexibly adjusting the rotation speed of the fan 200 to flexibly adjust the temperature of the heat dissipation mechanism 400, so that each radiator 412 of the heat dissipation mechanism 400 can have stable and effective cooling capability.
The preset value may be a critical high temperature of the engine of the mechanical device cooled by the cooling device 010 during normal operation, or a critical temperature at which each radiator 412 can cool the engine of the mechanical device; further, the preset value may be a temperature range or a temperature point value, for example: the preset value can be 35-40deg.C, 35-45deg.C, or 40deg.C, etc.; the temperature of the heat sink 412 is equal to a preset value, and may be a point value where the temperature of the heat sink 412 is equal to the preset value, or fall within a preset value interval.
Further, the controller 300 of the present embodiment is configured to obtain the temperature value of the corresponding radiator 412 detected by each temperature sensor 411, and the controller 300 is specifically configured to control the variable control mechanism 100 to increase the rotation speed of the fan 200 when at least one sensor detects that the temperature of the corresponding radiator 412 is higher than a preset value and another sensor detects that the temperature of the corresponding radiator 412 is equal to the preset value; the controller 300 is specifically further configured to control the variable control mechanism 100 to reduce the rotational speed of the fan 200 when at least one sensor detects that the temperature of its corresponding heat sink 412 is below a preset value and another sensor detects that the temperature of its corresponding heat sink 412 is equal to the preset value; the controller 300 is specifically further configured to control the variable control mechanism 100 to keep the rotational speed of the fan 200 unchanged when the respective sensors detect that the temperature of the radiator 412 is equal to a preset value. So configured, the controller 300 can be used to control the variable control mechanism 100 to adjust the rotation speed of the fan 200, so as to flexibly adjust the temperature of each radiator 412 in the heat dissipation mechanism 400, so that the plurality of radiators 412 can maintain a stable and effective cooling effect.
Further, the heat dissipation mechanism 400 of the present embodiment includes an air heat dissipation assembly, a fuel heat dissipation assembly and a coolant heat dissipation assembly, which can be used for cooling an engine of a mechanical device such as a rotary drilling machine.
Still further, the air heat dissipation assembly of the present embodiment includes an air temperature sensor and an air radiator, the fuel heat dissipation assembly includes a fuel temperature sensor and a fuel radiator, and the coolant heat dissipation assembly includes a coolant temperature sensor and a coolant radiator; the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor are all electrically connected to the controller 300, and the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor are respectively configured to detect temperatures of the air radiator, the fuel radiator, and the coolant radiator, and to transmit the detected temperatures to the controller 300.
It should be noted that the structures and working principles of the air temperature sensor, the fuel temperature sensor, the coolant temperature sensor, the air radiator, the fuel radiator and the coolant radiator are similar to those of the related art, and are not described herein again.
In other embodiments, the air heat rejection assembly may further include an intercooler and an air temperature sensor. In other embodiments, heat dissipation mechanism 400 may include an air heat dissipation assembly and a fuel heat dissipation assembly, or a fuel heat dissipation assembly and a coolant heat dissipation assembly, or an air heat dissipation assembly and a coolant heat dissipation assembly.
Further, referring to fig. 1, the variable control mechanism 100 of the present embodiment includes a hydraulic pump 101 and a motor 102 connected to each other, and a fan 200 fixedly sleeved on an output shaft of the motor 102; the controller 300 is used for controlling the motor 102 to adjust the rotation speed of the fan 200; in detail, when the rotation speed of the output shaft of the motor 102 increases, the rotation speed of the fan 200 increases to increase the rotation speed, and when the rotation speed of the output shaft of the motor 102 decreases, the rotation speed of the fan 200 decreases to decrease the rotation speed. The hydraulic pump 101 is used to supply high-pressure oil to the motor 102, thereby driving the fan 200 to rotate.
It should be noted that, when the cooling device 010 provided in this embodiment cools the engine of the rotary drilling machine, since the fan 200 is not disposed on the rotating shaft of the engine, the cooling of the cooling mechanism 400 by the fan 200 is not affected by the rotation of the rotating shaft of the engine.
In detail, referring to fig. 2, the variable control mechanism 100 of the present embodiment includes a fixed displacement pump 110, a fixed displacement motor 120, and a proportional relief valve 130 disposed between the fixed displacement pump 110 and the fixed displacement motor 120; the fan 200 is in transmission connection with the output shaft of the dosing motor 120; the controller 300 is electrically connected with the proportional overflow valve 130, and is used for adjusting the opening and closing of the proportional overflow valve 130 so as to control the quantitative motor 120 to adjust the rotating speed of the fan 200; that is, the hydraulic pump 101 includes a fixed displacement pump 110, and the motor 102 includes a fixed displacement motor 120. In detail, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is higher than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the current of the proportional overflow valve 130 is controlled to be changed to increase the opening degree of the proportional overflow valve 130, thereby increasing the rotation speed of the dosing motor 120 to increase the rotation speed of the fan 200, increasing the rotation speed such that the temperatures of the plurality of radiators 412 of the heat radiation mechanism 400 are all equal to the preset value; when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is lower than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, controlling the current of the proportional overflow valve 130 to be changed, thereby reducing the opening degree of the proportional overflow valve 130, thereby reducing the rotation speed of the dosing motor 120, thereby reducing the rotation speed of the fan 200, and reducing the rotation speed, such that the temperatures of the plurality of radiators 412 of the heat dissipation mechanism 400 are all equal to the preset value; when the air temperature sensor, the fuel temperature sensor and the coolant temperature sensor detect that the temperatures of the corresponding radiator 412 are equal to the preset values, the current of the proportional overflow valve 130 is controlled to be constant, so that the opening degree of the proportional overflow valve 130 is kept constant, the rotational speeds of the quantitative motor 120 and the fan 200 are kept constant, and the rotational speeds are kept constant.
It should be noted that, the temperature of the corresponding radiator 412 detected by at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor is higher or lower than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, including: any one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of the corresponding radiator 412 is higher or lower than a preset value, any two of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detect that the temperature of the corresponding radiator 412 is higher or lower than a preset value, and the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detect that the temperature of the corresponding radiator 412 is higher or lower than three conditions of the preset value.
In other embodiments, referring to fig. 1, the variable control mechanism 100 includes a variable pump and a fixed-volume motor 120 connected to each other, and a fan 200 is in driving connection with an output shaft of the fixed-volume motor 120; the controller 300 is electrically connected with the variable pump, and is used for controlling the variable pump to drive the quantitative motor 120 to adjust the rotation speed of the fan 200, i.e. the hydraulic pump 101 can also comprise the variable pump; in detail, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is higher than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the displacement of the variable pump is controlled to be increased, thereby increasing the rotation speed of the dosing motor 120 to increase the rotation speed of the fan 200, and increasing the rotation speed such that the temperatures of the plurality of radiators 412 of the heat dissipation mechanism 400 are all equal to the preset value; when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is lower than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the displacement of the variable pump is controlled to be reduced, thereby reducing the rotation speed of the dosing motor 120 to reduce the rotation speed of the fan 200, and reducing the rotation speed such that the temperatures of the plurality of radiators 412 of the heat radiation mechanism 400 are all equal to the preset value; when the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detect that the temperatures of the corresponding radiator 412 are all equal to the preset values, the displacement of the variable displacement pump is controlled to be constant, so that the rotational speeds of the dosing motor 120 and the fan 200 are constant, and the rotational speeds are constant.
In other embodiments, referring to fig. 1, the variable displacement control mechanism 100 includes a fixed displacement pump 110 and a variable displacement motor that are connected to each other, and a fan 200 is in driving connection with an output shaft of the variable displacement motor; the controller 300 is electrically connected with the variable motor, and is used for controlling the variable motor to adjust the rotating speed of the fan 200; i.e., motor 102 may also include a variable displacement motor; in detail, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is higher than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the variable motor is controlled to increase the rotation speed of the fan 200 such that the temperatures of the plurality of radiators 412 of the heat dissipation mechanism 400 are all equal to the preset value; when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is lower than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the variable motor is controlled to decrease the rotation speed of the fan 200, so that the temperatures of the plurality of radiators 412 of the heat dissipation mechanism 400 are all equal to the preset value; when the air temperature sensor, the fuel temperature sensor and the coolant temperature sensor detect that the temperatures of the corresponding heat sinks 412 are all equal to the preset values, the rotational speed of the control variable motor is kept unchanged, so that the rotational speed of the fan 200 is kept unchanged.
Referring to fig. 2, the variable control mechanism 100 of the present embodiment further includes a reversing valve 140, and the controller 300 is electrically connected to the reversing valve 140 and is used for controlling the reversing valve 140 to determine the direction of the fan 200, i.e. the fan 200 can be rotated forward or backward by controlling the reversing valve 140 through the controller 300. In detail, the direction valve 140 is connected to the motor 102 to control the direction valve 140 to adjust the direction of the output shaft of the motor 102 by the controller 300, thereby achieving the adjustment of the direction of the fan 200; the electromagnetic valve of the embodiment comprises a three-position four-way electromagnetic valve; in other embodiments, the solenoid valve may also be of other types, such as: two-position four-way solenoid valve, three-position five-way solenoid valve, etc., are not further described herein. It should be noted that the specific connection manner of the reversing valve 140 and the motor 102 is similar to that of the related art, and will not be described herein.
The cooling mechanism 400 of the cooling device 010 of the present embodiment can be used for cooling an engine of a rotary drilling rig, when the cooling device 010 is used, the controller 300 is used for controlling the reversing valve 140 to adjust the steering of the fan 200, then the controller 300 of the cooling device 010 obtains the temperatures of the corresponding radiators 412 detected by the temperature sensors 411 of the cooling components 410, when at least one of the air temperature sensor, the fuel temperature sensor and the coolant temperature sensor detects that the temperature of the corresponding radiator 412 is higher than a preset value, and when the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the current of the proportional overflow valve 130 is controlled to change, so that the opening degree of the proportional overflow valve 130 is increased, and the rotation speed of the quantitative motor 120 is increased, so that the rotation speed of the fan 200 is increased, and the rotation speed is increased, so that the temperatures of the plurality of the radiators 412 of the cooling mechanism 400 are equal to the preset value, namely, each radiator 412 of the cooling mechanism 400 is ensured to have stable and effective cooling performance; when at least one of the air temperature sensor, the fuel temperature sensor and the coolant temperature sensor detects that the temperature of the corresponding radiator 412 thereof is lower than a preset value and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, controlling the current of the proportional overflow valve 130 to be changed, thereby reducing the opening degree of the proportional overflow valve 130, thereby reducing the rotation speed of the dosing motor 120, thereby reducing the rotation speed of the fan 200, reducing the rotation speed, so that the temperatures of the plurality of radiators 412 of the heat dissipation mechanism 400 are all equal to the preset value, i.e., ensuring that each radiator 412 of the heat dissipation mechanism 400 has stable and effective cooling performance; when the air temperature sensor, the fuel temperature sensor and the coolant temperature sensor detect that the temperatures of the corresponding heat sinks 412 are equal to the preset values, the current of the proportional overflow valve 130 is controlled to be constant, so that the opening degree of the proportional overflow valve 130 is kept constant, the rotation speeds of the quantitative motor 120 and the fan 200 are kept constant, and the rotation speeds are kept constant, namely, stable and effective cooling performance of each heat sink 412 of the heat dissipation mechanism 400 is ensured.
In summary, the cooling device 010 provided by the embodiment of the invention includes the variable control mechanism 100, the fan 200, the heat dissipation mechanism 400 and the controller 300, wherein the variable control mechanism 100 is used for driving the fan 200 connected with the variable control mechanism to dissipate heat to the heat dissipation components 410 of the heat dissipation mechanism 400 by using the fan 200, the heat dissipation mechanism 400 includes at least two heat dissipation components 410, the heat dissipation media of each heat dissipation component 410 are different, each heat dissipation component 410 includes a temperature sensor 411 and a heat dissipation device 412, the controller 300 is electrically connected with the temperature sensor 411, the temperature sensor 411 is used for detecting the temperature of the heat dissipation device 412, and each heat dissipation device 412 is used for cooling the engine of mechanical equipment such as a rotary drilling machine; the controller 300 is configured to obtain the temperature of each radiator 412, and control the variable control mechanism 100 to adjust the rotation speed of the fan 200 according to the comparison result between the temperature of each radiator 412 and the preset value, so that the rotation speed of the fan 200 can be flexibly adjusted according to the temperature comparison between each radiator 412 and the preset value, thereby adjusting the temperature of each radiator 412 to ensure that each radiator 412 has stable and effective cooling capability.
The present embodiment also provides a rotary drilling rig (not shown in the drawings), which includes the cooling device 010 described above, and the cooling device 010 is used for cooling the engine of the rotary drilling rig; in detail, the heat dissipation mechanism 400 of the cooling device 010 is used to cool down the engine of the rotary drilling machine.
When the cooling device 010 is used for cooling an engine, the controller 300 controls the reversing valve 140 to adjust the steering direction of the fan 200, then the controller 300 of the cooling device 010 obtains the temperature of each corresponding radiator 412 detected by the temperature sensor 411 of each radiating component 410, when at least one of the air temperature sensor, the fuel temperature sensor and the cooling liquid temperature sensor detects that the temperature of the corresponding radiator 412 is higher than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the current of the proportional overflow valve 130 is controlled to change, so that the opening degree of the proportional overflow valve 130 is increased, the rotating speed of the quantitative motor 120 is increased, the rotating speed of the fan 200 is increased, and the rotating speed is increased, so that the temperatures of the radiating components 410 of the radiating mechanism 400 are equal to the preset value, namely, each radiating component 410 of the radiating mechanism 400 can stably and effectively cool the engine of the rotary drilling rig; when at least one of the air temperature sensor, the fuel temperature sensor and the coolant temperature sensor detects that the temperature of the corresponding radiator 412 is lower than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, controlling the current of the proportional overflow valve 130 to change, thereby reducing the opening degree of the proportional overflow valve 130, thereby reducing the rotation speed of the dosing motor 120, reducing the rotation speed of the fan 200, reducing the rotation speed, and enabling the temperatures of the plurality of heat dissipation components 410 of the heat dissipation mechanism 400 to be equal to the preset value, namely enabling each heat dissipation component 410 of the heat dissipation mechanism 400 to stably and effectively cool the engine of the rotary drilling machine; when the air temperature sensor, the fuel temperature sensor and the cooling liquid temperature sensor detect that the temperatures of the corresponding heat sinks 412 are equal to the preset values, the current of the proportional overflow valve 130 is controlled to be constant, so that the opening degree of the proportional overflow valve 130 is kept constant, the rotation speeds of the quantitative motor 120 and the fan 200 are kept constant, and the rotation speeds are kept constant, namely, the heat dissipation components 410 of the heat dissipation mechanism 400 stably and effectively cool the engine of the rotary drilling rig; the cooling device 010 of this embodiment can flexibly adjust the temperature of the heat dissipation mechanism 400 for cooling the engine of the rotary drilling rig through cooling the engine, thereby avoiding the waste of cooling capacity, avoiding the insufficient cooling capacity and avoiding the adverse effect on the engine.
In summary, the rotary drilling rig provided by the embodiment of the present invention includes the cooling device 010, where the cooling device 010 is configured to cool the engine of the rotary drilling rig, and the cooling device 010 controls the variable control mechanism 100 to adjust the rotation speed of the fan 200 according to the result obtained by the controller 300 and comparing the temperature of each radiator 412 with the preset value, so as to flexibly control the temperature of each radiator 412, thereby ensuring that the heat dissipation mechanism 400 can cool the engine of the rotary drilling rig stably and effectively.
Referring to fig. 3, the present embodiment further provides an engine cooling method for the cooling device 010 or the rotary drilling machine, where the engine cooling method includes:
s100: the temperature of the heat dissipation mechanism 400 is obtained.
Further, the temperature of the heat dissipation mechanism 400 is obtained by the controller 300.
In detail, the controller 300 acquires the temperature of the corresponding heat sink 412 detected by the temperature sensor 411 of each heat sink assembly 410, specifically including: the temperature of the air radiator detected by the air temperature sensor, the temperature of the coolant radiator detected by the coolant temperature sensor, and the temperature of the fuel radiator detected by the fuel temperature sensor.
S201: when the temperature of the heat radiation mechanism 400 is greater than the preset value, the control variable control mechanism 100 increases the rotation speed of the fan 200.
Further, when the temperature of at least one radiator 412 in the heat dissipation mechanism 400 is higher than a preset value and the temperature of the other radiator 412 is equal to the preset value, the control variable control mechanism 100 increases the rotation speed of the fan 200.
In detail, in the present embodiment, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is higher than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the current of the proportional overflow valve 130 is controlled to be changed to increase the opening degree of the proportional overflow valve 130, thereby increasing the rotation speed of the dosing motor 120 to increase the rotation speed of the fan 200, and the rotation speed is increased such that the temperatures of the plurality of radiators 412 of the heat radiation mechanism 400 are all equal to the preset value.
In other embodiments, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is higher than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the displacement of the variable displacement pump is controlled to be increased, thereby increasing the rotation speed of the fixed motor 120 to increase the rotation speed of the fan 200, increasing the rotation speed; alternatively, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is higher than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the variable motor is controlled to increase the rotation speed of the fan 200.
S202: when the temperature of the heat radiation mechanism 400 is less than the preset value, the control variable control mechanism 100 decreases the rotation speed of the fan 200.
Further, when the temperature of at least one radiator 412 in the heat dissipation mechanism 400 is lower than a preset value and the temperature of the other radiator 412 is equal to the preset value, the control variable control mechanism 100 decreases the rotation speed of the fan 200.
In detail, in the present embodiment, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is lower than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the current of the proportional overflow valve 130 is controlled to be changed so as to decrease the opening degree of the proportional overflow valve 130, thereby decreasing the rotation speed of the dosing motor 120, so as to decrease the rotation speed of the fan 200, and decrease the rotation speed, so that the temperatures of the plurality of radiators 412 of the heat radiation mechanism 400 are all equal to the preset value.
In other embodiments, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is lower than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the displacement of the variable displacement pump is controlled to be reduced, thereby reducing the rotation speed of the dosing motor 120 to reduce the rotation speed of the fan 200, reducing the rotation speed; alternatively, when at least one of the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detects that the temperature of its corresponding radiator 412 is lower than a preset value, and the temperature of the corresponding radiator 412 detected by the other sensor is equal to the preset value, the variable motor is controlled to decrease the rotation speed of the fan 200.
S203: when the temperature of the heat radiation mechanism 400 is equal to the preset value, the control variable control mechanism 100 keeps the rotation speed of the fan 200 unchanged.
Further, when the respective heat sinks 412 of the heat dissipation mechanism 400 are equal to the preset value, the control variable control mechanism 100 keeps the rotation speed of the fan 200 unchanged.
In detail, in the present embodiment, when the air temperature sensor, the fuel temperature sensor and the coolant temperature sensor detect that the temperatures of the corresponding radiator 412 are all equal to the preset values, the current of the proportional overflow valve 130 is controlled to be constant, so that the opening degree of the proportional overflow valve 130 is kept constant, the rotational speeds of the quantitative motor 120 and the fan 200 are kept constant, and the rotational speeds are kept constant.
In other embodiments, when the air temperature sensor, the fuel temperature sensor, and the coolant temperature sensor detect that the temperatures of the corresponding radiator 412 are all equal to the preset values, the displacement of the variable displacement pump is controlled to be constant, so that the rotational speeds of the quantitative motor 120 and the fan 200 are constant, and the rotational speeds are constant; or, when the air temperature sensor, the fuel temperature sensor and the coolant temperature sensor detect that the temperatures of the corresponding radiator 412 are all equal to the preset values, the rotational speed of the variable motor is controlled to be constant, so that the rotational speed of the fan 200 is maintained to be constant.
Referring to fig. 4, when the cooling device 010 cools the engine of the mechanical equipment such as the rotary drilling machine, the controller 300 may control the reversing valve 140 to adjust the steering of the output shaft of the motor 102 to determine the steering of the fan 200.
According to the engine cooling method of the embodiment, the variable control mechanism 100 can be controlled to adjust the rotation speed of the fan 200 according to the comparison result of the temperature of the corresponding radiator 412 detected by each temperature sensor 411 and the preset value obtained by the controller 300, so as to flexibly adjust the rotation speed of the fan 200 according to the temperature of each radiator 412 of the heat dissipation mechanism 400, so that each radiator 412 can maintain stable and effective cooling performance, so as to provide effective cooling for the engine of mechanical equipment such as a rotary drilling rig, and avoid adverse effects on the engine of the rotary drilling rig.
In summary, the engine cooling method provided by the embodiment of the present invention is used for the cooling device 010 or the rotary drilling machine, and can control the variable control mechanism 100 to adjust the rotation speed of the fan 200 according to the comparison result of the temperature of each radiator 412 and the preset value obtained by the controller 300, so that the cooling mechanism 400 maintains stable and effective cooling performance.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. 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 cooling device, characterized by comprising a variable control mechanism (100), a fan (200), a heat dissipation mechanism (400) and a controller (300), wherein the variable control mechanism (100) is connected with the fan (200) and is used for driving the fan (200) to rotate so as to enable the heat dissipation mechanism (400) to dissipate heat; the variable control mechanism (100) and the heat dissipation mechanism (400) are electrically connected with the controller (300); wherein,
the heat dissipation mechanism (400) comprises at least two heat dissipation components (410), the heat dissipation mediums of the heat dissipation components (410) are different, each heat dissipation component comprises a temperature sensor (411) and a heat sink (412), the controller (300) is electrically connected with the temperature sensor (411), and the temperature sensor (411) is used for detecting the temperature of the heat sink (412); the controller (300) is used for acquiring the temperature of each radiator (412) and controlling the variable control mechanism (100) to adjust the rotating speed of the fan (200) according to the comparison result of the temperature of each radiator (412) and a preset value.
2. The cooling device according to claim 1, wherein the controller (300) is specifically configured to control the variable control mechanism (100) to increase the rotational speed of the fan (200) when at least one of the sensors detects that the temperature of its corresponding heat sink (412) is higher than the preset value, and the other of the sensors detects that the temperature of its corresponding heat sink (412) is equal to the preset value.
3. The cooling device according to claim 1, wherein the controller (300) is in particular further configured to control the variable control mechanism (100) to reduce the rotational speed of the fan (200) when at least one of the sensors detects that the temperature of its corresponding heat sink (412) is below the preset value and the other of the sensors detects that the temperature of its corresponding heat sink (412) is equal to the preset value.
4. The cooling device according to claim 1, wherein the controller (300) is in particular further configured to control the variable control mechanism (100) to keep the rotational speed of the fan (200) unchanged when each of the sensors detects that the temperature of the radiator (412) is equal to a preset value.
5. The cooling device according to claim 1, characterized in that the variable control mechanism (100) includes a dosing pump (110), a dosing motor (120), and a proportional overflow valve (130) provided between the dosing pump (110) and the dosing motor (120); the fan (200) is in transmission connection with an output shaft of the quantitative motor (120); the controller (300) is electrically connected with the proportional overflow valve (130) and is used for adjusting the opening and closing of the proportional overflow valve (130) so as to control the quantitative motor (120) to adjust the rotating speed of the fan (200).
6. The cooling device according to claim 1, characterized in that the variable control mechanism (100) comprises a variable pump and a dosing motor (120) connected to each other, the fan (200) being in driving connection with an output shaft of the dosing motor (120); the controller (300) is electrically connected with the variable pump and is used for controlling the variable pump to drive the quantitative motor (120) to adjust the rotating speed of the fan (200).
7. The cooling device according to claim 1, characterized in that the variable displacement control mechanism (100) comprises a fixed displacement pump (110) and a variable displacement motor connected to each other, the fan (200) being in driving connection with an output shaft of the variable displacement motor; the controller (300) is electrically connected with the variable motor and is used for controlling the variable motor to adjust the rotating speed of the fan (200).
8. The cooling arrangement according to any one of claims 1-7, wherein the variable control mechanism (100) further comprises a reversing valve (140), the controller (300) being electrically connected to the reversing valve (140) for controlling the reversing valve (140) to determine the direction of the fan (200).
9. A rotary drilling rig comprising a cooling device according to any one of claims 1-8 for cooling an engine of the rotary drilling rig.
10. An engine cooling method for a cooling device according to any one of claims 1-8 or a rotary drilling rig according to claim 9, characterized in that the engine cooling method comprises:
acquiring the temperature of the heat dissipation mechanism (400);
when the temperature of the heat radiation mechanism (400) is larger than the preset value, controlling the variable control mechanism (100) to increase the rotating speed of the fan (200);
when the temperature of the heat radiation mechanism (400) is smaller than the preset value, controlling the variable control mechanism (100) to reduce the rotating speed of the fan (200);
when the temperature of the heat radiation mechanism (400) is equal to the preset value, the variable control mechanism (100) is controlled to keep the rotating speed of the fan (200) unchanged.
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| CN112177518B (en) * | 2020-09-29 | 2022-11-04 | 中油国家油气钻井装备工程技术研究中心有限公司 | Linkage control method for drilling drive motor host and cooling fan |
| CN112983619B (en) * | 2021-03-05 | 2022-12-20 | 柳州柳工挖掘机有限公司 | Engineering machine heat dissipation system, electronic fan control method and engineering machine |
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