Rotary drilling rig heat dissipation control method and device, readable storage medium and rotary drilling rig

Abstract

The invention provides a heat dissipation control method and device for a rotary drilling rig, a readable storage medium and the rotary drilling rig. The method is applied to a rotary drilling rig heat dissipation system and comprises the steps that the temperature of hydraulic oil on a hydraulic oil way, the temperature of cooling water in a cold water pipeline of an engine and the temperature of inlet air entering an air inlet of the engine are obtained; according to the hydraulic oil temperature, the cooling water temperature and the air inlet temperature, the first rotating speed of an oil cooling fan within the first preset temperature range, the second rotating speed of a water cooling fan within the second preset temperature range and the third rotating speed of a water cooling fan within the third preset temperature range are determined; according to the first rotating speed, the second rotating speed and the third rotating speed, the first target rotating speed of the oil cooling fan and the second target rotating speed of the water cooling fan are determined; and determining the pump current of the cooling pump according to the first target rotating speed and the second target rotating speed. According to the scheme, the rotating speed requirements of the oil cooling fan and the water cooling fan can be met at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation control for rotary drilling rigs, and particularly to a heat dissipation control method, device, readable storage medium and rotary drilling rig for a rotary drilling rig. Background Art

[0002] In the independent heat dissipation system in the prior art, two variable pumps are provided to drive two fixed-displacement motors, enabling the water-cooled fan and the oil-cooled fan to operate independently. At different ambient temperatures, the water radiator and the oil radiator can both reach their respective optimal operating temperatures. However, due to the addition of a variable pump, problems such as a cramped vehicle space and increased costs will occur, and the water radiator and the oil radiator need to be controlled separately to achieve overall independent heat dissipation. Summary of the Invention

[0003] The purpose of the present application is to provide a heat dissipation control method, device, readable storage medium and rotary drilling rig for a rotary drilling rig, which avoids the drawback of separately controlling the water radiator and the oil radiator. Through the pump current determined by a variable pump, the water-cooled motor and the oil-cooled motor can operate at different fan speeds, simplifying the control logic of the water-cooled motor and the oil-cooled motor.

[0004] To achieve the above object, an embodiment of the present application provides a heat dissipation control method for a rotary drilling rig, which is applied to a heat dissipation system of a rotary drilling rig. The heat dissipation system of the rotary drilling rig includes an engine and a cooling pump, a fan drive valve, an oil-cooled motor connected to an oil-cooled fan, and a water-cooled motor connected to a water-cooled fan, which are sequentially arranged on the hydraulic oil circuit of the engine. The oil-cooled motor and the water-cooled motor are connected in series. The method includes:

[0005] Obtain the hydraulic oil temperature on the hydraulic oil circuit, the cooling water temperature in the cooling water pipeline of the engine, and the intake air temperature at the intake port of the engine;

[0006] According to the hydraulic oil temperature, the cooling water temperature, and the intake air temperature, respectively determine the first rotation speed of the oil-cooled fan when the hydraulic oil temperature is within a first preset temperature range, the second rotation speed of the water-cooled fan when the cooling water temperature is within a second preset temperature range, and the third rotation speed of the water-cooled fan when the intake air temperature is within a third preset temperature range;

[0007] According to the first rotation speed, the second rotation speed, and the third rotation speed, determine the first target rotation speed of the oil-cooled fan and the second target rotation speed of the water-cooled fan;

[0008] According to the first target rotation speed and the second target rotation speed, determine the pump current of the cooling pump.

[0009] Optionally, determining a first target speed of the oil cooling fan and a second target speed of the water cooling fan according to the first speed, the second speed, and the third speed includes:

[0010] Determining a speed correspondence relationship between the oil cooling fan and the water cooling fan according to the series connection relationship between the oil cooling motor and the water cooling motor;

[0011] Converting the first speed, the second speed, and the third speed into three speeds in the same unit according to the speed correspondence relationship between the oil cooling fan and the water cooling fan, and determining the maximum value of the three speeds as the third target speed;

[0012] Determining the first target speed and the second target speed according to the third target speed.

[0013] Optionally, determining a first speed of the oil cooling fan when the hydraulic oil temperature is within a first preset temperature range, a second speed of the water cooling fan when the cooling water temperature is within a second preset temperature range, and a third speed of the water cooling fan when the intake air temperature is within a third preset temperature range according to the hydraulic oil temperature, the cooling water temperature, and the intake air temperature respectively includes:

[0014] Obtaining a first correspondence relationship between a preset hydraulic oil temperature and a preset oil cooling fan speed within the first preset temperature range, and determining the first speed of the oil cooling fan when the hydraulic oil temperature is within the first preset temperature range according to the first correspondence relationship and the hydraulic oil temperature;

[0015] Obtaining a second correspondence relationship between a preset cooling water temperature and a preset water cooling fan speed within the second preset temperature range, and determining the second speed of the water cooling fan when the cooling water temperature is within the second preset temperature range according to the second correspondence relationship and the cooling water temperature;

[0016] Obtaining a third correspondence relationship between a preset intake air temperature and a preset water cooling fan speed within the third preset temperature range, and determining the third speed of the water cooling fan when the intake air temperature is within the third preset temperature range according to the third correspondence relationship and the intake air temperature.

[0017] Optionally, when the rotary drilling rig cooling system further includes a safety rod and a fan reverse switch, the method further includes:

[0018] When receiving a lowering signal sent by the safety rod and determining that the current hydraulic oil temperature is greater than or equal to a target preset temperature, if receiving a reverse signal sent by the fan reverse switch, then controlling the oil cooling fan and the water cooling fan to perform a reverse action;

[0019] After receiving the lift signal sent by the safety bar or the reverse stop signal sent by the fan reverse switch, control both the oil cooling fan and the water cooling fan to switch from the reverse operation to stop the reverse operation.

[0020] Optionally, after receiving the reverse signal sent by the fan reverse switch, the method further includes:

[0021] According to the reverse signal, control the pump current of the cooling pump to increase to the maximum pump current at a first rate;

[0022] After maintaining the maximum pump current for a first preset duration, control it to decrease to the minimum pump current at a second rate;

[0023] After maintaining the minimum pump current for a second preset duration, control it to increase to the maximum pump current at the second rate, and then control the pump current of the cooling pump to decrease to the minimum pump current at the first rate based on the maximum pump current.

[0024] Optionally, within the target time period from increasing to the maximum pump current at the first rate to maintaining the minimum pump current for the second preset duration, the method further includes:

[0025] When receiving the lift signal sent by the safety bar, control both the oil cooling fan and the water cooling fan to switch from the reverse operation to stop the reverse operation, and restore to the initial speeds corresponding to the oil cooling fan and the water cooling fan.

[0026] Optionally, after the target time period of maintaining the minimum pump current for the second preset duration, the method further includes:

[0027] If receiving the reverse signal sent by the fan reverse switch, control the oil cooling fan and the water cooling fan to perform reverse operations, and control the oil cooling fan and the water cooling fan to restore to the corresponding reverse speeds.

[0028] To achieve the above object, an embodiment of the present application provides a heat dissipation control device for a rotary drilling rig, which is applied to the heat dissipation system of the rotary drilling rig. The heat dissipation system of the rotary drilling rig includes an engine and a cooling pump, a fan drive valve, an oil cooling motor connected to the oil cooling fan, and a water cooling motor connected to the water cooling fan that are sequentially arranged on the hydraulic oil circuit of the engine. The oil cooling motor and the water cooling motor are connected in series. The device includes:

[0029] A first acquisition module, configured to acquire the hydraulic oil temperature on the hydraulic oil circuit, the cooling water temperature in the cooling water pipeline of the engine, and the intake air temperature at the intake port of the engine.

[0030] A first determination module, configured to respectively determine a first rotation speed of the oil cooler fan when the hydraulic oil temperature is within a first preset temperature range, a second rotation speed of the water cooler fan when the cooling water temperature is within a second preset temperature range, and a third rotation speed of the water cooler fan when the intake air temperature is within a third preset temperature range, according to the hydraulic oil temperature, the cooling water temperature, and the intake air temperature;

[0031] A second determination module, configured to determine a first target rotation speed of the oil cooler fan and a second target rotation speed of the water cooler fan according to the first rotation speed, the second rotation speed, and the third rotation speed;

[0032] A third determination module, configured to determine the pump current of the cooling pump according to the first target rotation speed and the second target rotation speed.

[0033] To achieve the above object, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps in the above-mentioned rotary drilling rig heat dissipation control method are implemented.

[0034] To achieve the above object, an embodiment of the present application provides a rotary drilling rig, including the above-mentioned rotary drilling rig heat dissipation control device.

[0035] The beneficial effects of the above technical solutions of the present application are as follows:

[0036] In the embodiment of the present application, the method obtains the hydraulic oil temperature on the hydraulic oil circuit, the cooling water temperature in the cooling water pipeline of the engine, and the intake air temperature at the intake port of the engine, and respectively determines the first rotation speed of the oil cooler fan when the hydraulic oil temperature is within the first preset temperature range, the second rotation speed of the water cooler fan when the cooling water temperature is within the second preset temperature range, and the third rotation speed of the water cooler fan when the intake air temperature is within the third preset temperature range; determines the first target rotation speed of the oil cooler fan and the second target rotation speed of the water cooler fan according to the first rotation speed, the second rotation speed, and the third rotation speed; determines the pump current of the cooling pump according to the first target rotation speed and the second target rotation speed, thereby realizing the control of the rotation of the oil cooler fan and the water cooler fan by one cooling pump, avoiding the disadvantages of separately controlling the water radiator and the oil radiator, and also solving the disadvantage that the fan rotation speed is fixed when the engine rotation speed remains unchanged in the traditional heat dissipation system. The present application can realize the operation of the water cooler motor and the oil cooler motor at different fan rotation speeds through the pump current determined by a variable pump, and simplifies the control logic of the water cooler motor and the oil cooler motor. Description of the Drawings

[0037] Figure 1 It is a flowchart of the rotary drilling rig heat dissipation control method provided by the embodiment of the present application;

[0038] Figure 2The structural diagram of the heat dissipation control system of the rotary drilling rig provided by the embodiment of the present application;

[0039] Figure 3 The sectional corresponding schematic diagram of the reverse signal and speed control provided by the embodiment of the present application;

[0040] Figure 4 The structural diagram of the heat dissipation control device of the rotary drilling rig provided by the embodiment of the present application. Specific embodiments

[0041] To make the technical problems, technical solutions and advantages to be solved by the present application clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0042] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0043] In the embodiments of the present application, the term "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0044] In the embodiments of the present application, the term "a plurality of" refers to two or more, and other quantifiers are similar thereto.

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0046] The embodiments of the present application provide a heat dissipation control method, device, readable storage medium and rotary drilling rig for a rotary drilling rig. Among them, the method and the device are based on the same inventive concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repeated parts will not be described again.

[0047] As Figure 1 shown, the heat dissipation control method for a rotary drilling rig provided by the embodiment of the present application is applied to Figure 2The shown rotary drilling rig cooling system, the rotary drilling rig cooling system includes an engine and a cooling pump, a fan drive valve, an oil cooler motor connected to an oil cooler fan, and a water cooler motor connected to a water cooler fan, which are sequentially arranged on the hydraulic oil circuit of the engine. The oil cooler motor and the water cooler motor are connected in series. The method includes:

[0048] Step 11, obtain the hydraulic oil temperature on the hydraulic oil circuit, the cooling water temperature in the engine's cooling water pipeline, and the intake air temperature at the intake port of the engine;

[0049] Step 12, respectively determine the first rotation speed of the oil cooler fan when the hydraulic oil temperature is within a first preset temperature range, the second rotation speed of the water cooler fan when the cooling water temperature is within a second preset temperature range, and the third rotation speed of the water cooler fan when the intake air temperature is within a third preset temperature range according to the hydraulic oil temperature, the cooling water temperature, and the intake air temperature;

[0050] Step 13, determine the first target rotation speed of the oil cooler fan and the second target rotation speed of the water cooler fan according to the first rotation speed, the second rotation speed, and the third rotation speed;

[0051] Step 14, determine the pump current of the cooling pump according to the first target rotation speed and the second target rotation speed.

[0052] It should be noted that this method is applied to Figure 2 the shown rotary drilling rig cooling system. The rotary drilling rig cooling system at least includes an engine and a cooling pump, a fan drive valve, an oil cooler motor connected to an oil cooler fan, and a water cooler motor connected to a water cooler fan, which are sequentially arranged on the hydraulic oil circuit of the engine. Among them, the oil cooler motor and the water cooler motor are connected in series. The rotary drilling rig cooling system is an independent cooling system. There is only one variable pump in this independent cooling system, that is, the above-mentioned cooling pump. The cooling pump is installed at the power output port of the engine, that is, installed at the PTO (power take off) port of the engine. The hydraulic oil circuit is also provided with a hydraulic oil tank. After the hydraulic oil in the hydraulic oil tank passes through this cooling pump, it sequentially passes through the fan drive valve, the oil cooler motor, and the water cooler motor, and finally returns to the hydraulic oil tank again. On the other hand, Figure 2 only one cooling pump is provided in the shown rotary drilling rig cooling system, which also saves the layout space of the rotary drilling rig cooling system.

[0053] In the embodiment of the present application, the execution subject of the method may be a controller in the heat dissipation system of a rotary drilling rig. In step 11, the engine can determine the cooling water temperature in the cold water pipeline of the engine and the intake air temperature at the intake port of the engine, and the controller can directly obtain the cooling water temperature and the intake air temperature. A hydraulic oil temperature sensor connected to the controller is also provided in the heat dissipation system of the rotary drilling rig of the present application, and through the hydraulic oil temperature sensor, the hydraulic oil temperature on the hydraulic oil pipeline is obtained.

[0054] Further, the first rotation speed of the oil cooler fan is determined by the hydraulic oil temperature within the first preset temperature range. The first preset temperature range is the range where the hydraulic oil temperature is between 50°C and 80°C. The second rotation speed of the water cooler fan is determined by the cooling water temperature within the second preset temperature range. The second preset temperature range is the range where the cooling water temperature is between 85°C and 95°C. The third rotation speed of the water cooler fan is determined by the intake air temperature within the third preset temperature range. The third preset temperature range is the range where the intake air temperature is between 55°C and 70°C. That is, three parameters are obtained in the present application, and then the first rotation speed, the second rotation speed, and the third rotation speed corresponding to the three parameters are determined.

[0055] In steps 13 to 14, the target required rotation speed that can simultaneously meet the requirements corresponding to the three parameters is determined based on the first rotation speed, the second rotation speed, and the third rotation speed. According to the target required rotation speed, the first target rotation speed of the oil cooler fan and the second target rotation speed of the water cooler fan are determined. Then, based on the first target rotation speed and the second target rotation speed, the pump current used to drive the cooling pump is determined. The control method for determining the pump current of the cooling pump in the present application realizes the purpose of controlling the rotation of the oil cooler fan and the water cooler fan through one cooling pump, avoiding the disadvantages of separately controlling the water radiator and the oil radiator. The pump current determined by one variable pump can enable the water cooler motor and the oil cooler motor to work at different fan rotation speeds, simplifying the control logic of the water cooler motor and the oil cooler motor, and can also solve the disadvantage that the fan rotation speed is fixed when the engine rotation speed remains unchanged in the traditional heat dissipation system.

[0056] Optionally, step 13 of the present application includes:

[0057] Determine the rotation speed correspondence relationship between the oil cooler fan and the water cooler fan according to the series connection relationship between the oil cooler motor and the water cooler motor;

[0058] According to the rotation speed correspondence relationship between the oil cooler fan and the water cooler fan, convert the first rotation speed, the second rotation speed, and the third rotation speed into three rotation speeds in the same unit, and determine the maximum value of the three rotation speeds as the third target rotation speed;

[0059] Determine the first target speed and the second target speed according to the third target speed.

[0060] In the embodiments of the present application, since the oil-cooling motor and the water-cooling motor are connected in series, the speeds of the oil-cooling fan and the water-cooling fan correspond to each other. The speed correspondence relationship between the oil-cooling fan and the water-cooling fan can be deduced based on the series connection relationship between the oil-cooling fan and the water-cooling fan. For example, the speed correspondence relationship can be expressed as: the speed of the oil-cooling motor = flow rate * volumetric efficiency of the oil-cooling motor / displacement of the oil-cooling motor. Another example, the speed correspondence relationship can also be calculated in the following way: when connected in series, it can be considered that the flow rates passed by the oil-cooling motor and the water-cooling motor are basically equal. Let the displacement of the oil-cooling motor be V1, the speed be n1; the displacement of the water-cooling motor be V2, and the speed be n2, then the following relationship can be obtained: V1 * n1 = V2 * n2. The present application utilizes the speed correspondence relationship between the oil-cooling fan and the water-cooling fan to convert the first speed, the second speed, and the third speed into three speeds in the same unit respectively, and determines the maximum value of the three speeds as the third target speed. That is, the controller compares the required fan speeds corresponding to the hydraulic oil temperature measured by the hydraulic oil temperature sensor, the cooling water temperature provided by the engine, and the intake air temperature, and takes the maximum required speed, which is the third target speed. Furthermore, through the third target speed, the pump current of the cooling pump (which can also be understood as the pump demand current) is obtained, and this pump current is output to the cooling pump, which can control the pump pressure difference of the cooling pump, and further control the speed of each motor and the corresponding fan.

[0061] Optionally, step 12 above includes:

[0062] Obtain the first correspondence relationship between the preset hydraulic oil temperature and the preset oil-cooling fan speed within the first preset temperature range, and determine the first speed of the oil-cooling fan when the hydraulic oil temperature is within the first preset temperature range according to the first correspondence relationship and the hydraulic oil temperature;

[0063] Obtain the second correspondence relationship between the preset cooling water temperature and the preset water-cooling fan speed within the second preset temperature range, and determine the second speed of the water-cooling fan when the cooling water temperature is within the second preset temperature range according to the second correspondence relationship and the cooling water temperature;

[0064] Obtain the third correspondence relationship between the preset intake air temperature and the preset water-cooling fan speed within the third preset temperature range, and determine the third speed of the water-cooling fan when the intake air temperature is within the third preset temperature range according to the third correspondence relationship and the intake air temperature.

[0065] In the embodiments of the present application, the first preset temperature range is the range where the hydraulic oil temperature is between 50°C and 80°C. Among them, each preset hydraulic oil temperature in the first preset temperature range has a corresponding relationship with the preset oil cooler fan speed, that is, the first corresponding relationship. For example, when the hydraulic oil temperature is 52°C, according to the first corresponding relationship, the first speed v1 can be determined as the speed of the oil cooler fan corresponding to 52°C. Of course, if the hydraulic oil temperature is less than or equal to 50°C, the first speed is determined as the minimum oil cooler fan speed in the first corresponding relationship. Of course, if the hydraulic oil temperature is greater than or equal to 80°C, the first speed is determined as the maximum oil cooler fan speed in the first corresponding relationship. The second preset temperature range is the range where the cooling water temperature is between 85°C and 95°C. Among them, each preset cooling water temperature in the second preset temperature range has a corresponding relationship with the preset water cooler fan speed, that is, the second corresponding relationship. For example, when the cooling water temperature is 92°C, according to the second corresponding relationship, the second speed v2 can be determined as the speed of the water cooler fan corresponding to 92°C. Of course, if the hydraulic oil temperature is less than or equal to 85°C, the second speed is determined as the minimum water cooler fan speed in the second corresponding relationship. Of course, if the hydraulic oil temperature is greater than or equal to 95°C, the second speed is determined as the maximum water cooler fan speed in the second corresponding relationship. The third preset temperature range is the range where the intake air temperature is between 55°C and 70°C. Among them, each preset intake air temperature in the third preset temperature range has a corresponding relationship with the preset water cooler fan speed, that is, the third corresponding relationship. For example, when the cooling water temperature is 60°C, according to the third corresponding relationship, the third speed v3 can be determined as the speed of the water cooler fan corresponding to 60°C. Of course, if the hydraulic oil temperature is less than or equal to 55°C, the third speed is determined as the minimum water cooler fan speed in the third corresponding relationship. Of course, if the hydraulic oil temperature is greater than or equal to 70°C, the third speed is determined as the maximum water cooler fan speed in the third corresponding relationship.

[0066] Further, in step 13, after converting the speeds v1, v2, and v3 into the same unit, the maximum value among the converted speeds is determined as the third target speed. In the embodiments of the present application, each parameter (hydraulic oil temperature, cooling water temperature, and intake air temperature) corresponds to a different speed, and the third target speed can meet the required speeds of each parameter.

[0067] It should be known that in the related art, after the surface of the heat dissipation system of a rotary drilling rig is blocked, it is necessary to stop the machine and wait for the vehicle to cool down before manually cleaning it or using high-pressure air to blow it. Therefore, the convenience of cleaning and dust removal of the heat dissipation system is low, and during the cleaning process, the operator needs to be in that environment, which has great potential safety hazards, consumes a lot of man-hours, and has low work efficiency. To solve this technical drawback, the present application Figure 2 sets a safety rod and a fan reverse switch in the heat dissipation system of the rotary drilling rig shown in

[0068] When receiving the lowering signal sent by the safety rod and determining that the current hydraulic oil temperature is greater than or equal to the target preset temperature, if the reverse signal sent by the fan reverse switch is received, then control the oil radiator fan and the water radiator fan to perform reverse actions;

[0069] After receiving the raising signal sent by the safety rod or receiving the reverse stop signal sent by the fan reverse switch, then control the oil radiator fan and the water radiator fan to both switch from reverse actions to stop reverse actions.

[0070] In an implementation manner of the present application, the present application can implement the reverse function by receiving the reverse signal sent by the fan reverse switch, and can also implement the function of switching from reverse to forward rotation by receiving the reverse stop signal sent by the fan reverse switch. The present application realizes the simultaneous reverse rotation and simultaneous forward rotation of the oil radiator fan and the water radiator fan through the fan reverse switch. When the oil radiator fan and the water radiator fan rotate in reverse simultaneously, the function of cleaning and dust removal of the heat dissipation system can be realized. Before the present application realizes the reverse function, the conditions that need to be met are: receiving the lowering signal sent by the safety rod, and after determining that the hydraulic oil temperature is greater than or equal to the target preset temperature, then receiving the reverse signal sent by the fan reverse switch, and then control the oil radiator fan and the water radiator fan to perform reverse actions simultaneously. Among them, the target preset temperature is 5°C. When the hydraulic oil temperature is greater than or equal to 5°C, it can prevent the hydraulic oil from solidifying and affecting the realization of the reverse function; in Figure 2 In the rotary drilling rig heat dissipation system shown, the safety rod is connected to the controller. After the controller receives the lowering signal sent by the safety rod, it can determine the safety of the rotary drilling rig heat dissipation system. After the present application controls the oil radiator fan and the water radiator fan to perform reverse actions simultaneously once, it will automatically reset. Of course, when performing reverse actions, if the raising signal sent by the safety rod or the reverse stop signal sent by the fan reverse switch is received, then control the oil radiator fan and the water radiator fan to both switch from reverse actions to stop reverse actions.

[0071] Refer to Figure 3 shown in Figure 3 is a schematic diagram of the segmented correspondence between the reverse signal and the speed control provided by the embodiment of the present application. Optionally, after receiving the reverse signal sent by the fan reverse switch, the method further includes:

[0072] According to the reverse signal, control the pump current of the cooling pump to increase to the maximum pump current at the first rate;

[0073] Maintain the maximum pump current for a first preset duration, and then control it to decrease to the minimum pump current at the second rate;

[0074] Maintain the minimum pump current for a second preset duration, and then control it to increase to the maximum pump current at the second rate, and reduce the pump current of the cooling pump to the maximum pump current at the first rate according to the maximum pump current.

[0075] In the embodiments of the present application, Figure 3 when the signal of the fan reverse switch shown is "OFF", it means that the controller has not received the reverse signal. When the signal of the fan reverse switch is "ON", it means that the controller has received the reverse signal; when the signal of the fan drive valve is "OFF", it means that the fan drive valve of the controller is in the closed state. When the signal of the fan drive valve is "ON", it means that the fan drive valve of the controller is in the open state. The fan speed (oil-cooling fan speed or water-cooling fan speed) of the present application is inversely proportional to the pump current measurement. The pump current of the present application corresponds to an initial speed, that is, Figure 3 the current speed (the current speed can be the current speed of the oil-cooling fan or the current speed of the water-cooling fan) in. For the change relationship of the current speed, after receiving the reverse signal, the corresponding change relationships of the reverse signal, the current speed, and the fan reverse switch are referred to Figure 3 as shown, Figure 3 A reverse action is divided into stages (1) to (7).

[0076] Further, after the present application receives the reverse signal, it controls the pump current of the cooling pump to increase to the maximum pump current along the first rate. Correspondingly, the current speed decreases to the minimum speed along the first preset rate, that is, Figure 3 the stage (1) shown; after maintaining the maximum pump current for the first preset duration, it controls to decrease to the minimum pump current along the second rate, corresponding to maintaining Figure 3 the minimum speed for the first preset duration in the stage (2) shown. The first preset duration is represented as T1, and correspondingly maintains Figure 3 in the stage (3) shown, controls the minimum speed to increase to the maximum speed along the first preset rate. The duration of stage (3) is T2. Preferably, the duration of T2 is greater than or equal to the duration of T1; after maintaining the minimum pump current for the second preset duration, it correspondingly maintains Figure 3 the maximum speed for the second preset duration in the stage (4) shown, and controls to increase to the maximum pump current along the second rate, and according to the maximum pump current, decreases to the pump current of the cooling pump along the first rate, that is, after the reaction in stage (4) is completed, the reverse action has actually been completed, and the fan needs to be restored to the initial speed. Here, stages (1) to (4) are the actual processes for the reverse signal control to achieve the reverse action. Stages (5) and (6) are for the fan drive valve to reset.

[0077] Specifically, when using the fan reverse function, the fan reverse switch needs to be turned on, and at the same time, it is ensured that the hydraulic oil temperature ≥ 5°C and the safety bar is lowered. At this time, the controller obtains the reverse signal and will control the pump current to increase for a period of time (stage (1)) to the maximum current for reverse, causing the fan speed to decrease at a certain rate to the lowest speed. After continuing for a period of time (stage (2)), the fan drive valve reverses, and at the same time, the pump current is controlled to decrease for a period of time (stage (3)) to the minimum current for reverse, causing the fan to reverse and increase to the set speed, and start reverse ash removal. After continuing for a period of time (stage (4)), the reverse signal ends. At this time, the controller will control the pump current to increase for a period of time (stage (5)) at the same rate, causing the fan speed to decrease to the lowest speed again. After continuing for a period of time (stage (6)), the fan drive valve turns forward, and at the same time, the pump current is controlled to decrease for a period of time (stage (7)) to the initial current, causing the fan speed to rotate forward and increase to the initial speed, and the reverse function is completed.

[0078] Further, within the target time period from increasing to the maximum pump current at the first rate to maintaining the minimum pump current for a second preset duration, the method further includes:

[0079] When receiving the lift signal sent by the safety bar, control both the oil cooling fan and the water cooling fan to switch from the reverse operation to stop the reverse operation and resume to the initial speeds corresponding to the oil cooling fan and the water cooling fan.

[0080] In the embodiment of the present application, within the target time period from increasing to the maximum pump current at the first rate to maintaining the minimum pump current for a second preset duration, that is Figure 3 In stages (1) to (4) as shown, if the lift signal sent by the safety bar is received, it indicates that the safety bar is lifted at this time, and the overall machine actions of the rotary drilling rig can be performed, such as walking, slewing, etc. If the fan continues to reverse, it will cause the heat dissipation to not meet the performance requirements and cannot ensure the operation safety. To ensure the operation safety, it is necessary to stop the reverse operation of the fan in time. That is, when receiving the lift signal sent by the safety bar, control both the oil cooling fan and the water cooling fan to switch from the reverse operation to stop the reverse operation and resume to the initial speeds corresponding to the oil cooling fan and the water cooling fan. That is, when the safety bar is lifted in stages (1) to (4), the reverse operation ends in advance, and the fan speed resumes to the initial speed at the same rate, so as to ensure the operation safety of the rotary drilling rig.

[0081] Further, after the target time period of maintaining the minimum pump current for a second preset duration, the method further includes:

[0082] If receiving the reverse signal sent by the fan reverse switch, control the oil cooling fan and the water cooling fan to perform the reverse operation, and control the oil cooling fan and the water cooling fan to resume to the corresponding reverse speeds.

[0083] In the embodiment of the present application, after the target time period for maintaining the second preset duration of the minimum pump current, that is Figure 3 In the stages (5) to (7) shown, if a reverse signal sent by the fan reverse switch is received, the oil cooler fan and the water cooler fan can be controlled to perform reverse actions, without the need to restore the current speed of the fan to the initial speed (or the current speed). That is, in the stages (5) to (7), when the fan reverse rotation switch is turned on again, the reverse action starts again, and the fan speed returns to the reverse set speed at the same rate, and the reverse function is performed again. The present application saves the time of the reverse action and improves the efficiency of the reverse through this step.

[0084] In summary, the present application realizes controlling the rotation of the oil cooler fan and the water cooler fan through a single cooling pump, which can simultaneously meet the speed requirements of the oil cooler fan and the water cooler fan, avoiding the disadvantages of separately controlling the water radiator and the oil radiator, and can also solve the disadvantage that in the case of constant engine speed in the traditional cooling system, the fan speed is fixed; through the pump current determined by a variable pump in the present application, the water cooler motor and the oil cooler motor can work at different fan speeds, simplifying the control logic of the water cooler motor and the oil cooler motor.

[0085] Referring to Figure 4 As shown, the embodiment of the present application further provides a rotary drilling rig heat dissipation control device, which is applied to Figure 2 the rotary drilling rig heat dissipation system shown. The rotary drilling rig heat dissipation system includes an engine and a cooling pump, a fan drive valve, an oil cooler motor connected to the oil cooler fan, and a water cooler motor connected to the water cooler fan, which are sequentially arranged on the hydraulic oil circuit of the engine. The oil cooler motor and the water cooler motor are connected in series. The device includes:

[0086] A first acquisition module 41, configured to acquire the hydraulic oil temperature on the hydraulic oil circuit, the cooling water temperature in the cold water pipeline of the engine, and the intake air temperature at the intake port of the engine;

[0087] A first determination module 42, configured to respectively determine the first speed of the oil cooler fan when the hydraulic oil temperature is within a first preset temperature range, the second speed of the water cooler fan when the cooling water temperature is within a second preset temperature range, and the third speed of the water cooler fan when the intake air temperature is within a third preset temperature range according to the hydraulic oil temperature, the cooling water temperature, and the intake air temperature;

[0088] A second determination module 43, configured to determine a first target speed of the oil cooler fan and a second target speed of the water cooler fan according to the first speed, the second speed, and the third speed;

[0089] A third determination module 44, configured to determine the pump current of the cooling pump according to the first target speed and the second target speed.

[0090] Optionally, in the embodiment of the present application, the above-mentioned second determination module 43 includes:

[0091] A first determination unit, configured to determine the rotational speed correspondence between the oil cooler fan and the water cooler fan according to the series connection relationship between the oil cooler motor and the water cooler motor;

[0092] A second determination unit, configured to convert the first speed, the second speed, and the third speed into three speeds in the same unit according to the rotational speed correspondence between the oil cooler fan and the water cooler fan, and determine the maximum value of the three speeds as the third target speed;

[0093] A third determination unit, configured to determine the first target speed and the second target speed according to the third target speed.

[0094] Optionally, in the embodiment of the present application, the above-mentioned first determination module 42 includes:

[0095] A fourth determination unit, configured to obtain a first correspondence between a preset hydraulic oil temperature and a preset oil cooler fan speed within the first preset temperature range, and determine the first speed of the oil cooler fan when the hydraulic oil temperature is within the first preset temperature range according to the first correspondence and the hydraulic oil temperature;

[0096] A fifth determination unit, configured to obtain a second correspondence between a preset cooling water temperature and a preset water cooler fan speed within the second preset temperature range, and determine the second speed of the water cooler fan when the cooling water temperature is within the second preset temperature range according to the second correspondence and the cooling water temperature;

[0097] A sixth determination unit, configured to obtain a third correspondence between a preset intake air temperature and a preset water cooler fan speed within the third preset temperature range, and determine the third speed of the water cooler fan when the intake air temperature is within the third preset temperature range according to the third correspondence and the intake air temperature.

[0098] Optionally, in the embodiment of the present application, when the rotary drilling rig cooling system further includes a safety rod and a fan reverse switch, the device further includes:

[0099] A first processing module, configured to, when receiving the lowering signal sent by the safety rod and determining that the current hydraulic oil temperature is greater than or equal to the target preset temperature, if receiving the reverse signal sent by the fan reverse switch, then control the oil cooler fan and the water cooler fan to perform a reverse action;

[0100] A second processing module, configured to control both the oil cooling fan and the water cooling fan to switch from the reverse operation to stop the reverse operation after receiving the lift signal sent by the safety rod or receiving the reverse stop signal sent by the fan reverse switch.

[0101] Optionally, in an embodiment of the present application, the above-mentioned first processing module includes:

[0102] A first processing unit, configured to control the pump current of the cooling pump to increase along a first rate to the maximum pump current according to the reverse signal;

[0103] A second processing unit, configured to maintain the maximum pump current for a first preset duration and then control it to decrease to the minimum pump current along a second rate;

[0104] A third processing unit, configured to maintain the minimum pump current for a second preset duration and then control it to increase to the maximum pump current along the second rate, and control the pump current of the cooling pump to decrease to the maximum pump current along the first rate according to the maximum pump current.

[0105] Optionally, in an embodiment of the present application, the device further includes:

[0106] A third processing module, configured to control both the oil cooling fan and the water cooling fan to switch from the reverse operation to stop the reverse operation and restore to the initial speeds corresponding to the oil cooling fan and the water cooling fan when receiving the lift signal sent by the safety rod.

[0107] Optionally, in an embodiment of the present application, the device further includes:

[0108] A fourth processing module, configured to control the oil cooling fan and the water cooling fan to perform reverse operations and control the oil cooling fan and the water cooling fan to restore to the corresponding reverse speeds if receiving the reverse signal sent by the fan reverse switch.

[0109] Among them, the implementation embodiments of the above-mentioned rotary drilling rig heat dissipation control method are all applicable to the embodiments of the rotary drilling rig heat dissipation control device, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0110] An embodiment of the present application further provides a rotary drilling rig, including the rotary drilling rig heat dissipation control device as described above.

[0111] Among them, the implementation embodiments of the above-mentioned rotary drilling rig heat dissipation control device are all applicable to the embodiments of the rotary drilling rig, and the same technical effects can be achieved. To avoid repetition, they will not be elaborated here.

[0112] A readable storage medium according to an embodiment of the present application stores a program or instruction, and when the program or instruction is executed by a processor, it implements the steps in the above-mentioned heat dissipation control method of the rotary drilling rig and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0113] Among them, the processor is the processor in the heat dissipation control method of the rotary drilling rig described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, abbreviated as ROM), a random access memory (Random Access Memory, abbreviated as RAM), a magnetic disk, or an optical disc, etc.

[0114] The above exemplary embodiments are described with reference to these drawings. Many different forms and embodiments are feasible without departing from the spirit and teachings of the present application. Therefore, the present application should not be construed as being limited to the exemplary embodiments presented herein. Rather, these exemplary embodiments are provided so that the present application will be complete and perfect, and will convey the scope of the present application to those skilled in the art. In these drawings, the component sizes and relative sizes may be exaggerated for clarity. The terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms as well. It will be further understood that the terms "comprising" and / or "including" when used in this specification, indicate the presence of the stated features, integers, steps, operations, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, groups thereof, and / or their combinations. Unless otherwise indicated, when stating a value range, the range includes the upper and lower limits thereof and any sub-ranges therebetween.

[0115] The above is the preferred embodiment of the present application. It should be noted that for those of ordinary skill in the art of the present technology, without departing from the principle described in the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A heat dissipation control method for a rotary drilling rig, characterized in that, Applied to the heat dissipation system of a rotary drilling rig, the heat dissipation system of the rotary drilling rig includes an engine, a cooling pump, a fan drive valve, an oil cooler fan motor connected to the oil cooler fan, and a water cooler fan motor connected to the water cooler fan, which are sequentially arranged on the hydraulic oil pipeline of the engine. The oil cooler fan motor and the water cooler fan motor are connected in series. The method includes: Obtain the hydraulic oil temperature on the hydraulic oil pipeline, the cooling water temperature in the cooling water pipeline of the engine, and the intake air temperature at the intake port of the engine; According to the hydraulic oil temperature, the cooling water temperature, and the intake air temperature, respectively determine the first rotation speed of the oil cooler fan when the hydraulic oil temperature is within the first preset temperature range, the second rotation speed of the water cooler fan when the cooling water temperature is within the second preset temperature range, and the third rotation speed of the water cooler fan when the intake air temperature is within the third preset temperature range; According to the first rotation speed, the second rotation speed, and the third rotation speed, determine the first target rotation speed of the oil cooler fan and the second target rotation speed of the water cooler fan; According to the first target rotation speed and the second target rotation speed, determine the pump current of the cooling pump.

2. The method according to claim 1, wherein According to the first rotation speed, the second rotation speed, and the third rotation speed, determining the first target rotation speed of the oil cooler fan and the second target rotation speed of the water cooler fan includes: According to the series connection relationship between the oil cooler fan motor and the water cooler fan motor, determine the rotation speed correspondence relationship between the oil cooler fan and the water cooler fan; According to the rotation speed correspondence relationship between the oil cooler fan and the water cooler fan, convert the first rotation speed, the second rotation speed, and the third rotation speed into three rotation speeds in the same unit, and determine the maximum value of the three rotation speeds as the third target rotation speed; According to the third target rotation speed, determine the first target rotation speed and the second target rotation speed.

3. The method according to claim 1, characterized in that According to the hydraulic oil temperature, the cooling water temperature, and the intake air temperature, respectively determining the first rotation speed of the oil cooler fan when the hydraulic oil temperature is within the first preset temperature range, the second rotation speed of the water cooler fan when the cooling water temperature is within the second preset temperature range, and the third rotation speed of the water cooler fan when the intake air temperature is within the third preset temperature range includes: Obtain the first correspondence relationship between the preset hydraulic oil temperature and the preset rotation speed of the oil cooler fan within the first preset temperature range, and according to the first correspondence relationship and the hydraulic oil temperature, determine the first rotation speed of the oil cooler fan when the hydraulic oil temperature is within the first preset temperature range; Obtain the second correspondence relationship between the preset cooling water temperature and the preset rotation speed of the water cooler fan within the second preset temperature range, and according to the second correspondence relationship and the cooling water temperature, determine the second rotation speed of the water cooler fan when the cooling water temperature is within the second preset temperature range; Obtain the third correspondence relationship between the preset intake air temperature and the preset rotation speed of the water cooler fan within the third preset temperature range, and according to the third correspondence relationship and the intake air temperature, determine the third rotation speed of the water cooler fan when the intake air temperature is within the third preset temperature range.

4. The method according to claim 1, characterized in that, When the heat dissipation system of the rotary drilling rig further includes a safety rod and a fan reverse switch, the method further includes: When receiving the lowering signal sent by the safety bar and determining that the current hydraulic oil temperature is greater than or equal to the target preset temperature, if the reverse signal sent by the fan reverse switch is received, then control the oil cooler fan and the water cooler fan to perform reverse actions; After receiving the lifting signal sent by the safety bar or receiving the reverse stop signal sent by the fan reverse switch, then control both the oil cooler fan and the water cooler fan to switch from the reverse action to stop the reverse action.

5. The method according to claim 4, characterized in that, After receiving the reverse signal sent by the fan reverse switch, the method further includes: According to the reverse signal, control the pump current of the cooling pump to increase to the maximum pump current at a first rate; Maintain the maximum pump current for a first preset duration, and then control it to decrease to the minimum pump current at a second rate; Maintain the minimum pump current for a second preset duration, and then control it to increase to the maximum pump current at the second rate, and then control the pump current of the cooling pump to decrease to the minimum pump current at the first rate based on the maximum pump current.

6. The method according to claim 5, wherein During the target time period from increasing to the maximum pump current at the first rate to maintaining the minimum pump current for the second preset duration, the method further includes: When receiving the lifting signal sent by the safety bar, control both the oil cooler fan and the water cooler fan to switch from the reverse action to stop the reverse action, and restore to the initial speeds corresponding to the oil cooler fan and the water cooler fan.

7. The method according to claim 6, wherein After the target time period of maintaining the minimum pump current for the second preset duration, the method further includes: If receiving the reverse signal sent by the fan reverse switch, control the oil cooler fan and the water cooler fan to perform reverse actions, and control the oil cooler fan and the water cooler fan to restore to the corresponding reverse speeds.

8. A heat dissipation control device for a rotary drilling rig, characterized in that, Applied to the rotary drilling rig cooling system, the rotary drilling rig cooling system includes an engine and a cooling pump, a fan drive valve, an oil cooler motor connected to the oil cooler fan, and a water cooler motor connected to the water cooler fan that are sequentially arranged on the hydraulic oil circuit of the engine. The oil cooler motor and the water cooler motor are connected in series. The device includes: A first acquisition module for acquiring the hydraulic oil temperature on the hydraulic oil circuit, the cooling water temperature in the cooling water pipeline of the engine, and the intake air temperature at the intake port of the engine; A first determination module for respectively determining the first rotation speed of the oil cooler fan when the hydraulic oil temperature is within a first preset temperature range, the second rotation speed of the water cooler fan when the cooling water temperature is within a second preset temperature range, and the third rotation speed of the water cooler fan when the intake air temperature is within a third preset temperature range according to the hydraulic oil temperature, the cooling water temperature, and the intake air temperature; A second determination module for determining the first target rotation speed of the oil cooler fan and the second target rotation speed of the water cooler fan according to the first rotation speed, the second rotation speed, and the third rotation speed; A third determination module for determining the pump current of the cooling pump according to the first target rotation speed and the second target rotation speed; 9. A readable storage medium having a program or instructions stored thereon, characterized in that, The program or instruction, when executed by a processor, implements the steps in the rotary drilling rig cooling control method according to any one of claims 1 to 7.

10. A rotary drilling rig, characterized in that, Including the rotary drilling rig cooling control device according to claim 8.

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