Workover rig power system

Abstract

The utility model provides a workover rig power system which is characterized in that the system comprises a charger, one end of the charger is connected with high-voltage electricity, the other end of the charger is connected with a power battery, one end of the power battery is connected with a driving motor through a motor controller, and the output end of the driving motor is connected with a gearbox. The output end of the gearbox is connected with a workover rig-mounted executing mechanism through a transmission shaft; the other end of the power battery is connected with a workover rig executing mechanism through the auxiliary drive controller. The vehicle control unit is in signal connection with the charger, the power battery, the motor controller, the auxiliary drive controller and the gearbox. The driving motor is selected to replace an engine in the prior art, and carbon emission is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of power equipment for the hybrid upper installation of workover rigs, and particularly relates to a power system for a workover rig. Background Art

[0002] Existing driving schemes for the upper installation of workover rigs mostly select traditional engines, which are divided into two structures: one is to borrow the engine of the whole vehicle chassis for power take-off by shaft breaking, but this structure has poor stability and is prone to problems, affecting normal operation; the other is to install a separate set of engine power systems on the upper installation. However, both schemes have the following problems:

[0003] 1) Excessive carbon emissions, unable to meet the requirements of carbon emission indicators, and easily causing environmental pollution;

[0004] 2) The engine has a large noise, affecting the communication of on-site operators and seriously affecting the physical health of personnel;

[0005] 3) The operating conditions of the fuel engine are poor, the fuel consumption rate is high, the operating cost is high, and the economy is poor;

[0006] 4) Oilfield operation vehicles need to be licensed, and the engine schemes originally used by workover rigs are all lower than the latest national emission requirements and cannot continue to operate.

[0007] Therefore, it is urgent to provide a power system for a workover rig to solve the defects and deficiencies existing in the above-mentioned prior art. Content of the Utility Model

[0008] In order to solve the defects and deficiencies existing in the prior art, the utility model provides a power system for a workover rig.

[0009] The technical solution provided by the present utility model is as follows:

[0010] A power system for a workover rig, characterized in that: the system includes a charger, one end of the charger is connected to high-voltage electricity, and the other end is connected to a power battery. One end of the power battery is connected to a drive motor through a motor controller, the output end of the drive motor is connected to a gearbox, and the output end of the gearbox is connected to the upper installation actuator of the workover rig through a transmission shaft; the other end of the power battery is connected to the actuator of the workover rig through an auxiliary drive controller, and the vehicle controller is respectively signal-connected to the charger, the power battery, the motor controller, the auxiliary drive controller and the gearbox.

[0011] As a further preferred embodiment of the utility model, the charger is an AC / DC charger.

[0012] As a further preferred embodiment of the utility model, the high-voltage electricity is 380V high-voltage electricity.

[0013] As a further preferred embodiment of the present invention, the high voltage electricity can be obtained via a wind power generation system or a solar power generation system.

[0014] As a further preferred embodiment of the present invention, the power battery is a high-voltage power lithium battery.

[0015] As a further preferred embodiment of the present utility model, the drive motor is a flat wire three-phase permanent magnet synchronous motor.

[0016] As a further preferred embodiment of the present invention, the gearbox is a 4-speed AMT automatic shift gearbox.

[0017] As a further preferred embodiment of the present invention, a hub-type shift structure is selected inside the gearbox, and an active lubrication system is selected for the mechanical pump.

[0018] As a further preferred embodiment of the present utility model, the motor controller adopts a speed control method to achieve constant speed and variable speed control of the actuator mounted on the workover rig through the drive motor.

[0019] As a further preferred embodiment of the present invention, the accessory drive controller is an accessory drive all-in-one controller.

[0020] Compared with the prior art, the beneficial effects achieved by the utility model include:

[0021] 1) The utility model provides a workover rig power system, which uses a drive motor to replace the engine in the prior art, effectively reducing carbon emissions.

[0022] 2) The utility model provides a workover rig power system that is noise-free, facilitates normal work and communication for on-site operators, and ensures the health of the workers' ears and other physical conditions.

[0023] 3) The utility model provides a workover rig power system, which uses a drive motor to replace the engine in the prior art, brings economic benefits through the fuel-electricity economic difference, reduces fuel costs, saves fuel up to 70%, and increases profits.

[0024] 4) The utility model provides a workover rig power system to improve the new energy rate of workover rig vehicles, meet emission requirements, and obtain a higher priority work permit.

[0025] 5) The utility model provides a workover rig power system, which realizes the new energy solution and facilitates further development in the direction of unmanned and remote control in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model provides a logic structure diagram of a workover rig power system. Detailed implementation mode

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] [First embodiment]

[0031] As Figure 1 shown, a workover rig power system provided by the first embodiment of the present invention includes a charger. One end of the charger is connected to high-voltage electricity, and the other end is connected to a power battery. In this embodiment, an AC / DC charger is selected as the charger, and a high-voltage power lithium battery is selected as the power battery. Through the conversion of the charger, the on-site high-voltage alternating current can be converted to charge the power battery to meet the requirements of continuous on-site loading operations. In this embodiment, 380V high-voltage electricity has been connected to the oilfield site, which is convenient for charging. The high-voltage electricity at the oilfield site can also be obtained through a wind power generation system or a photovoltaic power generation system.

[0032] One end of the power battery is connected to the drive motor through the motor controller. The output end of the drive motor is connected to the gearbox. The output end of the gearbox is connected to the on-board actuator of the workover rig through the transmission shaft. In this embodiment, the drive motor is a flat wire three-phase permanent magnet synchronous motor, the gearbox is a 4-speed AMT automatic shift gearbox, and the hub-type shift structure is selected inside the gearbox. The mechanical pump is equipped with an active lubrication system. In this embodiment, the motor controller adopts a speed control method. The driving force is transmitted to the corresponding equipment for lifting the oil well pipeline of the workover rig through the transmission shaft by the drive motor to realize the operation of pulling out the oil pipeline. The on-board actuator of the workover rig is controlled at a constant speed and variable speed by the drive motor, improving the actual operation efficiency.

[0033] The other end of the power battery is connected to the workover rig actuator through the auxiliary drive controller. The vehicle controller is respectively connected to the charger, the power battery, the motor controller, the auxiliary drive controller and the gearbox for signal connection. Preferably, in this embodiment, the auxiliary drive controller is an integrated auxiliary drive controller, such as an integrated four-in-one auxiliary drive controller, etc. It has a high integration degree, which is convenient for the layout of the on-board part of the workover rig, and can accurately and conveniently control the accessory equipment.

[0034] Since the workover rig needs to be transferred to different sites and long-distance operation consumes a large amount of energy. If it is changed to a pure electric drive scheme, a large number of batteries are required, and the cost is not advantageous. Moreover, the workover rig is a fixed-point long-term operation equipment and does not require a large number of batteries, and the on-site charging conditions are available. Therefore, this embodiment adopts a pure electric on-board drive equipment combining a special-purpose vehicle chassis for workover rigs and lithium batteries. As the on-board drive device of the oilfield workover rig, a drive motor is selected to replace the engine in the prior art, effectively reducing carbon emissions; it is noise-free, facilitating normal work communication among on-site operators and ensuring the physical health of workers' ears, etc.; a drive motor is selected to replace the engine in the prior art, bringing economic benefits through the difference between fuel and electricity, reducing fuel costs, with a fuel saving rate of up to 70% and increasing revenue; improving the new energy rate of the workover rig vehicle, meeting emission requirements and obtaining a higher-priority work permit; at the same time, realizing the new energy of the scheme, which is convenient for further development in the direction of unmanned and remote control in the future.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A workover rig power system, the system comprising a charger, one end of the charger is connected to high voltage electricity, the other end is connected to a power battery, one end of the power battery is connected to a drive motor through a motor controller, the output end of the drive motor is connected to a gearbox, and the output end of the gearbox is connected to an actuator mounted on the workover rig through a transmission shaft; Features: The other end of the power battery is connected to the workover rig actuator through the accessory drive controller, and the vehicle controller is respectively connected to the charger, power battery, motor controller, accessory drive controller and gearbox signal; The motor controller adopts a speed control method to achieve constant speed and variable speed control of the actuator mounted on the workover rig through the drive motor; The auxiliary drive controller is an auxiliary drive all-in-one controller.

2. A workover rig power system according to claim 1, characterized in that: The charger is an AC / DC charger.

3. A workover rig power system according to claim 1, characterized in that: The high voltage electricity is 380V.

4. A workover rig power system according to claim 1, characterized in that: The high voltage electricity can be obtained via a wind power generation system or a photovoltaic power generation system.

5. The workover rig power system according to claim 1, characterized in that: The power battery is a high-voltage power lithium battery.

6. A workover rig power system according to claim 1, characterized in that: The driving motor is a flat wire three-phase permanent magnet synchronous motor.

7. A workover rig power system according to claim 1, characterized in that: The gearbox is a 4-speed AMT automatic shift gearbox.

8. A workover rig power system according to claim 7, characterized in that: The gearbox adopts a hub-type shifting structure inside, and the mechanical pump adopts an active lubrication system.

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