Electric workover rig thermal management control system and control method

Abstract

The invention discloses a thermal management control system and method for an electric workover rig. The system comprises a winch temperature control system, a motor temperature control system and a battery temperature control system which are automatically adjusted, and a central control module electrically connected with all the temperature control systems. Each temperature control system is independent of each other and comprises a temperature sensor, an independent control unit and an actuator; the control right of each system can be forcibly taken over by the central control module; the motor temperature control system and the battery temperature control system have heating and cooling functions; independent and accurate temperature control and global linkage of a winch, a motor and a battery are realized by constructing a multi-system cooperative temperature control framework combining a central control module and autonomous adjustment; the priority arbitration and forced takeover mechanism of the central control module ensures quick response and safety intervention under abnormal working conditions, has the characteristic of multi-level safety guarantee, improves the reliability and operation continuity of the electric workover rig in an extreme environment, and ensures the comprehensive operation and maintenance efficiency of equipment and the energy utilization rate.

Description

Technical Field

[0001] The present invention relates to workover equipment, and in particular to a thermal management control system and control method for an electric workover rig. Background Art

[0002] In the fields of oil equipment and construction machinery, the thermal management of core components of electric workover rigs, such as drawworks, motors, batteries, etc., directly affects the performance and safety of the whole machine. Traditional workover rigs usually rely only on the mechanical braking system of the drawworks. However, since electric workover rigs introduce electronic control components such as motors and batteries, their thermal management requirements are more complex. In the prior art, the thermal management systems of electric workover rigs mostly adopt independent temperature control units, lacking centralized intelligent control capabilities, resulting in operators having to frequently adjust different components, with low efficiency. Secondly, the traditional system only has a one-way heat dissipation function and cannot adapt to low-temperature environments, leading to a decline in the performance of motors or batteries or even failure in cold conditions. At the same time, due to the lack of a priority control mechanism, when local temperature control is abnormal, the system cannot quickly respond and forcibly take over, easily causing safety accidents such as brake failure or power interruption. Such technical defects result in insufficient reliability of electric workover rigs under extreme working conditions, not only affecting the operation efficiency but also increasing equipment failures and personnel safety risks. Summary of the Invention

[0003] Object of the Invention: The object of the present invention is to provide a thermal management control system for an electric workover rig that features centralized management and control, independent adjustment of multiple systems, and is safe and reliable. Another object of the present invention is to provide an intelligent collaborative, precise, and efficient thermal management control method for an electric workover rig.

[0004] Technical Solution: The thermal management control system for an electric workover rig described in the present invention includes a drawworks temperature control system, a motor temperature control system, a battery temperature control system that can be independently adjusted, and a central control module electrically connected to each temperature control system. Each temperature control system is independent of each other and includes a temperature sensor, an independent control unit, and an actuator. The central control module centrally displays the parameters of each system, judges the working state of components, and sends control instructions to the actuator, and its instruction priority is higher than that of each independent control unit, and each system can be forcibly taken over by the central control module for control. The motor temperature control system and the battery temperature control system have heating and cooling functions.

[0005] Preferably, the central control module integrates a display unit, a control unit, and a priority arbitration unit. The display unit real-time displays the parameters and status of each system. The control unit sends control instructions to the actuators of each temperature control system. The priority arbitration unit ensures that the central control instructions take precedence over the independent adjustment instructions of each independent control unit.

[0006] Preferably, the central control module further includes a wireless communication unit for receiving remote instructions from a wireless remote control. The wireless remote control can independently set the operating parameters of each temperature control system.

[0007] Preferably, the central control module is further provided with a safety control unit. When any temperature control system malfunctions, the safety control unit forcibly restricts the operating parameters of that system.

[0008] Preferably, the drawworks temperature control system includes a first cooling unit, a first temperature sensor, and a first independent control unit; the motor temperature control system includes a second cooling unit, a motor heating unit, a second temperature sensor, and a second independent control unit; the battery temperature control system includes a third cooling unit, a battery heating unit, a third temperature sensor, and a third independent control unit; each temperature control system is connected to a corresponding coolant storage tank.

[0009] Preferably, the coolant storage tanks of each system are all connected to an expansion tank for discharging the air in the system and maintaining stable pressure.

[0010] A thermal management control method for an electric workover rig according to the present invention includes the following steps:

[0011] S1: Conduct self-checks on each temperature control system when the system starts up;

[0012] S2: If the self-check is normal, each temperature control system enters the independent regulation mode;

[0013] S3: The central control module monitors and displays the parameters of each system in real time and can take over the control right at any time.

[0014] Preferably, the independent regulation in step S2 includes: the drawworks temperature control system controls the brake temperature through the first cooling unit; the motor temperature control system controls the motor temperature by coordinating the second cooling unit and the motor heating unit; the battery temperature control system controls the battery temperature by coordinating the third cooling unit and the battery heating unit.

[0015] Preferably, the central control module sends control instructions by wired or wireless means, can directly set the target temperature value after taking over the control right, and the instruction has the highest priority.

[0016] Preferably, when it is detected that the temperature of any temperature control system exceeds the safe range, the operating power of the power equipment connected to that temperature control system is automatically reduced.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following remarkable advantages: By constructing a multi-system collaborative temperature control architecture that combines a central control module with autonomous regulation, independent and precise temperature control of the drawworks, motor, and battery is achieved, along with global intelligent linkage, effectively solving the problems of low efficiency of decentralized regulation and poor low-temperature adaptability in traditional systems; Through the priority arbitration and forced takeover mechanism of the central control module, rapid response and safety intervention under abnormal working conditions are ensured, featuring multi-level safety guarantees, improving the reliability and operation continuity of the electric workover rig in extreme environments, and ensuring the overall equipment operation and maintenance efficiency and energy utilization rate. Brief Description of the Drawings

[0018] Figure 1 It is the logic schematic diagram of the thermal management control system in the present invention.

[0019] Figure 2 It is the schematic diagram of the drawworks temperature control system in the present invention.

[0020] Figure 3 It is the schematic diagram of the motor temperature control system in the present invention.

[0021] Figure 4 It is the schematic diagram of the battery temperature control system in the present invention. Detailed Embodiments

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] As Figures 1-4As shown, a thermal management control system and control method for an electric workover rig in this embodiment mainly consist of a drawworks temperature control system, a motor temperature control system, a battery temperature control system, and a central control module. Each temperature control system is independently designed, capable of achieving autonomous adjustment functions and not interfering with each other. The drawworks temperature control system controls the cooling of the brake device by the first cooling unit through the feedback of the first temperature sensor via the first independent control unit. The motor and battery temperature control systems both have dual functions of heating and cooling to meet the working requirements under different ambient temperatures. The motor temperature control system controls the second cooling unit or the motor heating unit to cool down and heat up the motor through the feedback of the second temperature sensor via the second independent control unit. The battery temperature control system controls the third cooling unit or the battery heating unit to cool down and heat up the battery through the feedback of the third temperature sensor via the third independent control unit to ensure that the motor and battery are in the best working state and do not reduce the operating efficiency due to being too cold or too hot. Each system is connected to an independent coolant storage tank through pipelines, and the system pressure is maintained stable by an expansion tank to ensure the reliability of the coolant circulation. The central control module, as the core of the system, maintains real-time communication with each subsystem through electrical connection, integrating a display unit, a control unit, and a priority arbitration unit. The display unit displays the parameters and status of each system in real time. The control unit sends control instructions to the actuators of each temperature control system. The priority arbitration unit ensures that the central control instructions take precedence over the autonomous adjustment instructions of each independent control unit to form a complete control network. At the same time, the instruction priority of the central control module is higher than that of each independent control unit, and each system can be forcibly taken over by the central control module at any time. Meanwhile, the central control module also includes a wireless communication unit for receiving remote instructions from a wireless remote controller; the operating parameters of each temperature control system can be independently set directly with the wireless remote controller. The central control module also has a safety control unit that forcibly restricts the working parameters of the system when any temperature control system shows an abnormality.

[0024] When the system is working, it first performs a self-check program. After confirming that the status of each sensor, actuator, and communication link is normal, each temperature control system enters the autonomous operation mode. The winch temperature control system continuously monitors the brake temperature and realizes temperature control by adjusting the coolant flow rate; the motor and battery temperature control systems, according to the real-time temperature data, intelligently switch between the heating or cooling modes to maintain the temperature within the optimal working range. The central control module centrally displays the operating parameters of each system through the display unit, and the operator can always grasp the equipment status. When an abnormal situation is detected, the central control module can immediately take over the control right, ensure the priority execution of the control instructions through the priority arbitration unit, and when necessary, the safety control unit will forcibly limit the operating parameters of the relevant systems to avoid the expansion of the fault. At the same time, when the on-site operator believes that the appropriate working temperatures of the winch, motor, and battery at this time are different from the optimal temperatures set in the original autonomous operation mode, the optimal temperature setting can be directly adjusted through the central control module to overwrite the original instruction, that is, the instruction of the central control module takes precedence over the instruction of the independent control unit of each independent temperature control system.

[0025] The control method of this system fully reflects the intelligent characteristics. Under normal working conditions, each temperature control system operates autonomously without manual intervention; when adjustment is needed, the operator can either set through the central control panel or remotely modify the parameters using a wireless remote control. In extreme temperature environments, the system automatically activates the corresponding heating or cooling function to ensure the normal operation of the equipment. If the temperature of a certain independent temperature control system exceeds the safe range, the system will intelligently reduce the output power of the associated equipment and maintain the basic operation ability while ensuring safety. This hierarchical control strategy not only ensures the convenience of daily operations but also ensures a quick response in case of emergencies, effectively improving the reliability and safety of the electric workover rig under various working conditions. The entire system realizes flexible configuration of functions through modular design, and each component works together to jointly form an efficient and intelligent thermal management solution.

Claims

1. A thermal management control system for an electric workover rig, characterized in that, It includes a winch temperature control system with autonomous regulation, a motor temperature control system, a battery temperature control system, and a central control module electrically connected to each temperature control system; each temperature control system includes a temperature sensor, an independent control unit, and an actuator; the central control module displays the parameters of each system, judges the working state of the components, and sends control instructions to the actuator, and its instruction priority is higher than that of each independent control unit; the motor temperature control system and the battery temperature control system have heating and cooling functions.

2. The thermal management control system according to claim 1, wherein: The central control module integrates a display unit, a control unit, and a priority arbitration unit.

3. The thermal management control system according to claim 1, wherein: The central control module further includes a wireless communication unit for receiving remote instructions from a wireless remote controller; the wireless remote controller can independently set the operating parameters of each temperature control system.

4. The thermal management control system according to claim 1, wherein: The central control module is also provided with a safety control unit, which forcibly restricts the working parameters of a system when any temperature control system shows an abnormality.

5. The thermal management control system according to claim 1, wherein: The winch temperature control system includes a first cooling unit, a first temperature sensor, and a first independent control unit; the motor temperature control system includes a second cooling unit, a motor heating unit, a second temperature sensor, and a second independent control unit; the battery temperature control system includes a third cooling unit, a battery heating unit, a third temperature sensor, and a third independent control unit; each temperature control system is connected to a corresponding coolant storage tank.

6. The thermal management control system according to claim 5, characterized in that: The coolant storage tanks of each system are all connected to an expansion tank for discharging the air in the system and maintaining stable pressure.

7. A thermal management control method for the electric workover rig according to claim 1, characterized in that, It includes the following steps: S1: Perform self-check on each temperature control system when the system starts up; S2: If the self-check is normal, each temperature control system enters the autonomous regulation mode; S3: The central control module monitors and displays the parameters of each system in real time and can take over the control right at any time.

8. The thermal management control method according to claim 7, wherein: The autonomous regulation in step S2 includes: the winch temperature control system controls the brake temperature through the first cooling unit; the motor temperature control system controls the motor temperature by coordinating the second cooling unit and the motor heating unit; the battery temperature control system controls the battery temperature by coordinating the third cooling unit and the battery heating unit.

9. The thermal management control method according to claim 7, wherein: The central control module sends control instructions by wired or wireless means, can directly set the target temperature value after taking over the control right, and has the highest instruction priority.

10. The thermal management control method according to claim 7, characterized in that: When it is detected that the temperature of any temperature control system exceeds the safe range, the operating power of the power equipment connected to the temperature control system is automatically reduced.

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