Hybrid power fracturing system and hybrid power fracturing equipment

Abstract

The utility model relates to a hybrid power fracturing system and hybrid power fracturing equipment, the hybrid power fracturing system comprises a first power unit and a second power unit, the first power unit comprises an engine and a transfer case, the transfer case is arranged on one side of the engine, and the input end of the transfer case is connected with the engine through a first power transmission device; the output end of the transfer case comprises a first output shaft and a second output shaft, and the first output shaft drives fracturing equipment through a second power transmission device; the second power unit comprises a power generation unit and a motor, the input end of the power generation unit is connected with the second output shaft through a fourth power transmission device, the output end of the power generation unit is connected with the motor, and the motor drives fracturing equipment through a third power transmission device. The working modes of the hybrid power fracturing system are switched according to operation requirements and the like, it is ensured that the fracturing task is efficiently completed, fuel economy is improved, emission is remarkably reduced, and environmental protection and energy saving are achieved.

Description

Technical Field

[0001] This application relates to the field of fracturing system technology, and in particular to a hybrid power fracturing system and hybrid power fracturing equipment. Background Technology

[0002] In oil and gas field fracturing operations, traditional fracturing methods powered by diesel engines and other equipment have gradually revealed drawbacks such as high costs and significant environmental pollution. Currently, electric drive methods are commonly used for fracturing operations. One approach is to directly connect the fracturing system to the power grid, utilizing the electricity provided by the grid. Another approach is to install power generation equipment at the work site, such as a gas turbine-driven generator set, to provide the necessary power.

[0003] However, the starting process of gas turbine-driven generator sets typically relies on black-start equipment, such as diesel engine-driven power equipment. In scenarios where multiple generators operate in parallel, each generator requires a corresponding black-start device, leading to redundancy in starting equipment and increasing equipment and maintenance costs. Secondly, in high-temperature operating environments, the power generation capacity of gas turbines decreases significantly, potentially causing overload of the power generation equipment and affecting the normal operation of fracturing. Furthermore, the electrical load of fracturing operations fluctuates considerably. During operational breaks, if the generator set remains idle, it wastes fuel; while frequent start-stop cycles to adapt to load changes not only increase costs but may also shorten the generator set's lifespan. Additionally, when a gas turbine is used as a power source to drive fracturing equipment, due to load fluctuations, the gas turbine's output often cannot remain within the economical range, resulting in energy waste. This not only affects the efficiency of fracturing operations but also increases operating costs.

[0004] In summary, there are still some problems to be solved in terms of power supply methods, power generation limitations, load fluctuation adaptability, and energy utilization efficiency in current electric fracturing operations. Utility Model Content

[0005] Therefore, it is necessary to provide a hybrid power fracturing system and hybrid power fracturing equipment to address the problems of low efficiency and poor economic performance of current fracturing systems.

[0006] A hybrid power fracturing system, comprising:

[0007] The first power unit includes an engine and a transfer case. The transfer case is located on one side of the engine. The input end of the transfer case is connected to the engine through a first power transmission device. The output end of the transfer case includes a first output shaft and a second output shaft. The first output shaft drives the fracturing equipment through the second power transmission device.

[0008] The second power unit includes a power generation unit and a motor. The input end of the power generation unit is connected to the second output shaft through a fourth power transmission device, and the output end of the power generation unit is connected to the motor. The motor drives the fracturing equipment through a third power transmission device.

[0009] In one embodiment, the power generation unit includes a generator and a frequency converter, the frequency converter being disposed between the generator and the motor, the input end of the generator being connected to the second output shaft via a fourth power transmission device, the output end of the generator being connected to the frequency converter, and the frequency converter being connected to the motor.

[0010] In one embodiment, the second power unit further includes an energy storage unit disposed on one side of the frequency converter, the energy storage unit being connected to the frequency converter.

[0011] In one embodiment, the energy storage unit includes a battery, a combiner cabinet, and a converter arranged in sequence. The battery is connected to the combiner cabinet, the combiner cabinet is connected to the converter, and the converter is unidirectionally connected to the frequency converter.

[0012] In one embodiment, the output of the generator is connected to the converter, the converter is bidirectionally connected to the combiner cabinet, and the combiner cabinet is bidirectionally connected to the battery.

[0013] In one embodiment, the generator's output terminal includes a first output terminal and a second output terminal spaced apart, the first output terminal being connected to the frequency converter and the second output terminal being connected to the converter.

[0014] In one embodiment, an auxiliary unit is further included, which is disposed above or below the first power unit. The auxiliary unit includes a lubrication unit disposed below the engine for lubricating the first power unit and the second power unit.

[0015] In one embodiment, the auxiliary unit further includes an intake unit, an exhaust unit, and a ventilation unit. The ventilation unit is disposed above the engine for cooling the engine. The intake unit is disposed on one side of the ventilation unit for absorbing air. The exhaust unit is disposed on the other side of the ventilation unit and located between the engine and the transfer case for discharging exhaust gases.

[0016] In one embodiment, a control unit is also included, which is disposed on one side of the first power unit and electrically connected to the first power unit, the second power unit, and the auxiliary unit, respectively.

[0017] The aforementioned hybrid fracturing system can switch to the optimal working mode according to the current operational needs, engine operating conditions, and battery status, ensuring efficient and energy-saving fracturing tasks, improving fuel economy, and significantly reducing emissions, thus achieving environmental protection and energy conservation.

[0018] According to another objective of this utility model, a hybrid power fracturing device is also provided, including the hybrid power fracturing system as described above;

[0019] The hybrid fracturing equipment also includes a first transport device and a second transport device. The first transport device includes a first power unit, an auxiliary unit, a control unit, a generator, and an electric motor. The second transport device includes an energy storage unit and a frequency converter.

[0020] The aforementioned hybrid power fracturing equipment, with its first power unit and second power unit installed on two separate transport devices, facilitates rapid transfer of the fracturing equipment between well sites, effectively shortening the resumption time and improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the layout of a hybrid fracturing system.

[0022] Figure 2 This is a schematic diagram of the layout of the first transportation equipment.

[0023] Figure 3 This is a schematic diagram of the layout of the second transportation equipment.

[0024] In the diagram: 1. First power unit; 11. Engine; 12. Transfer case; 121. First output shaft; 122. Second output shaft; 2. Second power unit; 20. Generator unit; 21. Electric motor; 22. Generator; 221. First output terminal; 222. Second output terminal; 23. Frequency converter; 24. Energy storage unit; 25. Battery; 26. Combiner cabinet; 27. Converter; 3. Auxiliary unit; 31. Lubrication unit; 32. Air intake unit; 33. Exhaust unit; 34. Ventilation unit; 4. Control unit; 5. Power transmission device; 51. First power transmission device; 52. Second power transmission device; 53. Third power transmission device; 54. Fourth power transmission device; 6. Fracturing equipment; 7. First transportation equipment; 8. Second transportation equipment. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0031] See Figure 1 , Figure 1 A schematic diagram of the layout of a hybrid power fracturing system according to an embodiment of this application is shown. An embodiment of this application provides a hybrid power fracturing system including a first power unit 1 and a second power unit 2, as well as a matching power transmission device 5 and fracturing equipment 6.

[0032] Specifically, the first power unit 1 includes an engine 11 and a transfer case 12. The transfer case 12 is located on one side of the engine 11, and its input end is connected to the engine 11 via a first power transmission device 51. The output end of the transfer case 12 includes a first output shaft 121 and a second output shaft 122. The first output shaft 121 drives the fracturing equipment 6 via a second power transmission device 52. The second power unit 2 includes a generator unit 20 and an electric motor 21. The input end of the generator unit 20 is connected to the second output shaft 122 via a fourth power transmission device 54, and its output end is connected to the electric motor 21. The electric motor 21 drives the fracturing equipment 6 via a third power transmission device 53.

[0033] In the specific implementation process, when high power output is required or the engine 11 is in the high-efficiency operating range, such as medium and high speed, the system mainly relies on the engine 11 to provide power, and directly drives the plunger pump through the first output shaft 121 of the transfer case 12.

[0034] When the fracturing operation requires less torque, or when the engine 11 is operating in a low-efficiency range, such as at low speed and high load, the system switches to the electric motor 21-dominated mode. The power generation unit 20 generates electricity using part of the power transmitted by the second output shaft 122 of the transfer case 12, and the electric motor 21 uses this electrical energy to drive the fracturing equipment 6, effectively avoiding the high fuel consumption problem of the engine 11 under low efficiency.

[0035] As mentioned above, the hybrid power fracturing system can automatically or manually switch to the optimal operating mode based on current operational needs, engine operating conditions, and battery status, ensuring efficient and energy-saving fracturing operations. Therefore, the hybrid power fracturing system not only improves fuel economy but also significantly reduces emissions, achieving environmental protection and energy conservation.

[0036] In one embodiment, engine 11 may be a diesel engine, which has high thermal efficiency and good torque output characteristics.

[0037] In one embodiment, the transfer case 12 is mounted on one side of the engine 11 and receives power output from the engine 11 via the power transmission device 5. The transfer case 12 is used to distribute the input power to two independent first output shafts 121 and second output shafts 122.

[0038] In one embodiment, the power generation unit 20 includes a generator 22, the input of which is connected to the second output shaft 122 of the transfer case 12 via a power transmission device 5, generating electricity using a portion of the power allocated by the transfer case 12. Preferably, the generator 22 may be located on one side of the transfer case 12 and below the fracturing equipment 6.

[0039] In one embodiment, the input terminal of the electric motor 21 is directly connected to the output terminal of the power generation unit 20 via a cable, receiving electrical energy and converting it into mechanical energy. Because the electric motor 21 has a fast torque response speed, rapid working reaction, and no slippage or rotation phenomenon, it can significantly improve the efficiency and stability of fracturing operations.

[0040] In one embodiment, the power transmission device 5 includes a coupling, a gear transmission mechanism, a belt transmission mechanism, etc. For example, in the first power unit 1, the engine 11 is directly connected to the transfer case 12 via a coupling; the first output shaft 121 of the transfer case 12 drives the fracturing equipment 6, such as a plunger pump, via a gear transmission mechanism, such as a reduction gearbox. In the second power unit 2, the generator unit 20 is connected to the second output shaft 122 of the transfer case 12 via a belt drive, while the motor 21 drives the same set of fracturing equipment 6 via a chain drive or direct connection. In this embodiment, the power transmission device 5 can be adaptively selected according to the specific application scenario.

[0041] In one embodiment, the fracturing equipment 6 employs a high-pressure plunger pump to inject high-pressure fluid into the formation, thereby performing the fracturing operation. The plunger pump is selected to withstand the high torque and speed variations transmitted from the engine 11 or the electric motor 21.

[0042] Combination Figure 1 As shown, Figure 1 This is a schematic diagram of the layout of a hybrid power fracturing system provided in one embodiment of this application. In some embodiments, the power generation unit 20 includes a generator 22 and a frequency converter 23.

[0043] Specifically, the frequency converter 23 is located between the generator 22 and the motor 21. The input end of the generator 22 is connected to the second output shaft 122 of the transfer case 12 via the fourth power transmission device 54, receiving mechanical power and converting it into electrical energy. The output end of the generator 22 is connected to the frequency converter 23, which is responsible for regulating the frequency and voltage of the electrical energy. The motor 21 is connected to the frequency converter 23 via a cable, receiving the regulated electrical energy and converting it into mechanical power, which drives the fracturing equipment 6 via the third power transmission device 53.

[0044] Combination Figure 1 As shown, Figure 1 This is a schematic diagram of the layout of a hybrid power fracturing system provided in one embodiment of this application. In some embodiments, the second power unit 2 further includes an energy storage unit 24, which is disposed on one side of the frequency converter 23 and connected to the frequency converter 23. The frequency converter 23 is responsible for adjusting the frequency and voltage of the electrical energy to meet the operating requirements of the motor 21.

[0045] In one embodiment, the energy storage unit 24 includes a battery 25, a combiner cabinet 26, and a converter 27 arranged in sequence.

[0046] Specifically, the battery 25 is connected to the combiner cabinet 26, the combiner cabinet 26 is connected to the inverter 27, and the inverter 27 is unidirectionally connected to the frequency converter 23. In this embodiment, the battery 25, combiner cabinet 26, and inverter 27 can be arranged vertically in a row or horizontally in a row.

[0047] In one embodiment, the battery 25 serves as an energy storage device, used to release electrical energy to support the operation of the motor 21. In this embodiment, the type of battery 25 can be selected based on factors such as system power requirements, energy storage capacity, cycle life, and operating environment. For example, the battery 25 may be a lithium-ion battery or a lead-acid battery.

[0048] In one embodiment, the combiner cabinet 26 is used to combine the DC power output from the battery 25 into one or more channels for easy management and distribution. In this embodiment, the combiner cabinet 26 also has overcurrent protection, short-circuit protection, and other functions to ensure the safe operation of the system.

[0049] In one embodiment, converter 27 converts the DC power output from battery 25 into AC power to ensure compatibility with the AC grid of inverter 23. In this embodiment, converter 27 and inverter 23 are unidirectionally connected, meaning power can only flow from converter 27 to inverter 23, preventing backflow of system power to battery 25 and protecting battery 25 from damage. In this embodiment, a suitable converter 27 model can be selected based on the DC voltage level of battery 25, the voltage level of the system AC grid, and power requirements to ensure efficient power conversion and stable output.

[0050] In the specific implementation process, the battery 25 releases the stored electrical energy through the combiner cabinet 26 and the converter 27. The converter 27 converts the DC power into AC power and sends it to the frequency converter 23. The frequency converter 23 intelligently adjusts the frequency and voltage of the power according to the load and operating requirements of the motor 21 to ensure that the motor 21 drives the fracturing equipment 6 efficiently and stably.

[0051] As mentioned above, the hybrid fracturing system ensures stable operation and efficient operation under different working conditions through the design of the energy storage unit 24.

[0052] Combination Figure 1 As shown, Figure 1 This is a schematic diagram of the layout of a hybrid fracturing system provided in one embodiment of this application. In some embodiments, the output terminal of the generator 22 includes a first output terminal 221 and a second output terminal 222 that are spaced apart.

[0053] Specifically, the first output terminal 221 and the second output terminal 222 are arranged vertically or horizontally. The first output terminal 221 is connected to the frequency converter 23 through a cable to provide stable AC power to the motor 21. The second output terminal 222 is connected to the converter 27 through a cable to provide power for charging the battery 25, ensuring stable power output and improving system reliability.

[0054] In one embodiment, the converter 27 has a bidirectional power conversion function, which can convert the electrical energy output by the generator 22 into DC power suitable for charging the battery 25, and at the same time, it can convert the DC power in the battery 25 into AC power suitable for use by the frequency converter 23.

[0055] In one embodiment, the combiner cabinet 26 is bidirectionally connected to the inverter 27, receiving DC power from the inverter 27 and distributing it to the battery 25 for charging. Simultaneously, when needed, the combiner cabinet 26 can also draw power from the battery 25 and convert it into AC power via the inverter 27 to supply the frequency converter 23.

[0056] In one embodiment, the battery 25 is bidirectionally connected to the combiner cabinet 26, which can store electrical energy when the generator 22 generates excess electrical energy and release electrical energy when needed to support the operation of the motor 21, so that the system can operate independently at construction sites without grid coverage and without relying on external power sources.

[0057] In this embodiment, the hybrid fracturing system employs multiple power transmission devices 5, and the hybrid fracturing system includes the following multiple operating modes:

[0058] (1) Full power output of engine 11: When high power demand is required, engine 11 transmits power to transfer case 12 through first power transmission device 51, and transfer case 12 provides all power to plunger pump through second power transmission device 52.

[0059] (2) Partial power output of engine 11 and charging of battery 25: When the power demand is low and the battery 25 is depleted, engine 11 transmits power to transfer case 12 through first power transmission device 51. Transfer case 12 transmits part of the power to generator 22 through fourth power transmission device 54. The AC power generated by generator 22 is converted into DC power through converter 27 and then charged to battery 25 through combiner cabinet 26. At the same time, transfer case 12 provides another part of the power to plunger pump through second power transmission device 52.

[0060] (3) Engine 11 and battery 25 drive together: When the power demand is particularly high and the battery 25 has sufficient power, the engine 11 transmits power to the transfer case 12 through the first power transmission device 51. The transfer case 12 provides all the power to the plunger pump through the second power transmission device 52. At the same time, the battery 25 supplies power to the motor 21 through the combiner cabinet 26, converter 27 and frequency converter 23. The motor 21 provides additional power to the plunger pump through the third power transmission device 53.

[0061] (4) Generator 22 and battery 25 jointly supply power: When the power demand is moderate and the battery 25 has sufficient power, the engine 11 transmits power to the transfer case 12 through the first power transmission device 51. The transfer case 12 transmits all the power to the generator 22 through the fourth power transmission device 54 to generate electricity. The electrical energy generated by the generator 22 is transmitted to the motor 21 through the frequency converter 23. At the same time, the battery 25 provides electrical energy to the motor 21 through the combiner cabinet 26, converter 27 and frequency converter 23. The motor 21 provides power to the plunger pump through the third power transmission device 53.

[0062] (5) Battery 25 supplies power independently: When the power demand is low and the battery 25 is depleted, the engine 11 transmits power to the transfer case 12 through the first power transmission device 51. The transfer case 12 transmits power to the generator 22 through the fourth power transmission device 54 to generate electricity. The electrical energy generated by the generator 22 is stored in the battery 25 through the converter 27 and the combiner cabinet 26. The battery 25 provides the required electrical energy for the motor 21.

[0063] (6) Generator 22 provides power and charges independently: When the power demand is low and the battery 25 is severely depleted, the engine 11 transmits power to the transfer case 12 through the first power transmission device 51. The transfer case 12 transmits power to the generator 22 through the fourth power transmission device 54 to generate electricity. Part of the electrical energy generated by the generator 22 is processed by the frequency converter 23 and transmitted to the motor 21. The other part is stored in the battery 25 through the converter 27 and the combiner cabinet 26.

[0064] (7) Battery 25 drive: Battery 25 supplies power to motor 21 through combiner cabinet 26, converter 27 and frequency converter 23. Motor 21 supplies power to plunger pump through third power transmission device 53.

[0065] As described above, the hybrid fracturing system can automatically adjust the power source and distribution according to the power demand of the plunger pump and the charge status of the battery 25 to achieve optimal energy utilization and operational efficiency.

[0066] Combination Figure 2 As shown, Figure 2 This is a schematic diagram of the layout of the first transport device 7 provided in one embodiment of this application. In some embodiments, the hybrid fracturing system further includes an auxiliary unit 3, which is disposed above or below the first power unit 1.

[0067] In one embodiment, the auxiliary unit 3 further includes a lubrication unit 31, which is disposed below the engine 11 and is used for lubrication of the first power unit 1 and the second power unit 2. Specifically, the lubrication unit 31 provides a continuous supply of lubricating oil to the engine 11, generator 22, electric motor 21, transfer case 12, and power transmission device 5 in the system to reduce wear and extend equipment life.

[0068] In one embodiment, the auxiliary unit 3 includes an intake unit 32, an exhaust unit 33, and a ventilation unit 34. The ventilation unit 34 is disposed above the engine 11 of the first power unit 1 for cooling the engine 11. The intake unit 32 is disposed on one side of the ventilation unit 34, i.e., on the left or right side of the ventilation unit 34, for absorbing air. The exhaust unit 33 is disposed on the other side of the ventilation unit 34, i.e., on the right or left side of the ventilation unit 34, and is located between the engine 11 and the transfer case 12 for discharging exhaust gases.

[0069] In one embodiment, the auxiliary unit 3 further includes a fire-fighting unit and an installation unit.

[0070] Specifically, the installation unit includes a robust, rainproof, and soundproof enclosure, providing a protective installation environment for the entire power unit. A ventilation unit 34 maintains a suitable temperature within the enclosure to prevent overheating. A fire suppression unit provides firefighting capabilities in emergencies, ensuring the safety of personnel and equipment. An intake unit 32 provides clean, quiet air to the engine 11 to ensure combustion efficiency. An exhaust unit 33 processes and discharges the high-temperature exhaust gases from the engine 11, while reducing noise pollution.

[0071] In one embodiment, the hybrid fracturing system further includes a control unit 4, which is electrically connected to the first power unit 1, the second power unit 2, and the auxiliary unit 3, respectively.

[0072] Specifically, the control unit 4 includes a battery power monitor, a plunger pump torque monitor, a controller, and a working mode switcher. The battery power monitor is used to monitor the battery's charge status in real time to ensure a stable power supply. The plunger pump torque monitor is used to monitor the plunger pump's operating status and prevent overload. The controller is responsible for receiving and processing various operating data. The working mode switcher allows for flexible switching between pure electric drive, fuel drive, or hybrid drive modes.

[0073] Combination Figure 2 , Figure 3 As shown, Figure 2 , Figure 3These are schematic diagrams showing the layout of the first transport device 7 and the second transport device 8 provided in one embodiment of this application. In this embodiment, a hybrid power fracturing device is also provided, including the hybrid power fracturing system described above. The hybrid power fracturing device further includes the first transport device 7 and the second transport device 8.

[0074] Specifically, the first transport equipment 7 integrates a first power unit 1, an auxiliary unit 3, a control unit 4, a generator 22, and an electric motor 21, forming a complete operating unit module with power generation capability. In the first power unit 1, the engine 11 is mounted on the first transport equipment 7, the transfer case 12 is located to one side of the engine 11, the fracturing equipment 6 is located on the side of the transfer case 12 away from the engine 11, the generator 22 is also located on the side of the transfer case 12 away from the engine 11, and the electric motor 21 is located on the side of the generator 22 away from the transfer case 12 and below the fracturing equipment 6. In the auxiliary unit 3, the ventilation unit 34 is located above the engine 11, the intake unit 32 is located to the left of the ventilation unit 34, and the exhaust unit is located to the right of the ventilation unit 34.

[0075] Furthermore, the second transport device 8 includes an energy storage unit 24 and a frequency converter 23 for storing electrical energy and regulating power transmission. The energy storage unit 24 contains a battery 25, a combiner cabinet 26, and a converter 27 arranged horizontally in sequence on the second transport device 8, with the frequency converter 23 located to the right of the converter 27. The generator 22 on the first transport device 7 is connected to both the energy storage unit 24 and the frequency converter 23 on the second transport device 8. This allows the electrical energy generated by the generator 22 to be regulated by the frequency converter 23 to power the motor 21, or the electrical energy generated by the generator 22 to be stored in the energy storage unit 24, or the energy storage unit 24 to power the motor 21 via the frequency converter 23.

[0076] In this embodiment, the first transport equipment 7 and the second transport equipment 8 can be transport vehicles such as chassis vehicles or ships, and the first power unit 1 and the second power unit 2 are respectively installed on the two transport equipment to facilitate the rapid transfer of the fracturing system between well sites, thereby shortening the resumption time.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A hybrid power fracturing system, characterized in that, include: The first power unit (1) includes an engine (11) and a transfer case (12). The transfer case (12) is located on one side of the engine (11). The input end of the transfer case (12) is connected to the engine (11) through a first power transmission device (51). The output end of the transfer case (12) includes a first output shaft (121) and a second output shaft (122). The first output shaft (121) drives the fracturing equipment (6) through the second power transmission device (52). The second power unit (2) includes a power generation unit (20) and a motor (21). The input end of the power generation unit (20) is connected to the second output shaft (122) through a fourth power transmission device (54), and the output end of the power generation unit (20) is connected to the motor (21). The motor (21) drives the fracturing equipment (6) through a third power transmission device (53).

2. The hybrid fracturing system according to claim 1, characterized in that, The power generation unit (20) includes a generator (22) and a frequency converter (23). The frequency converter (23) is located between the generator (22) and the motor (21). The input end of the generator (22) is connected to the second output shaft (122) through a fourth power transmission device (54). The output end of the generator (22) is connected to the frequency converter (23). The frequency converter (23) is connected to the motor (21).

3. The hybrid fracturing system according to claim 2, characterized in that, The second power unit (2) also includes an energy storage unit (24) disposed on one side of the frequency converter (23), and the energy storage unit (24) is connected to the frequency converter (23).

4. The hybrid fracturing system according to claim 3, characterized in that, The energy storage unit (24) includes a battery (25), a combiner cabinet (26), and a converter (27) arranged in sequence. The battery (25) is connected to the combiner cabinet (26), the combiner cabinet (26) is connected to the converter (27), and the converter (27) is unidirectionally connected to the frequency converter (23).

5. The hybrid fracturing system according to claim 4, characterized in that, The output terminal of the generator (22) is connected to the converter (27), the converter (27) is bidirectionally connected to the combiner cabinet (26), and the combiner cabinet (26) is bidirectionally connected to the battery (25).

6. The hybrid fracturing system according to claim 5, characterized in that, The generator (22) has an output terminal including a first output terminal (221) and a second output terminal (222) spaced apart. The first output terminal (221) is connected to the frequency converter (23), and the second output terminal (222) is connected to the converter (27).

7. The hybrid fracturing system according to any one of claims 1-6, characterized in that, It also includes an auxiliary unit (3) disposed above or below the first power unit (1), the auxiliary unit (3) including a lubrication unit (31), the lubrication unit (31) being disposed below the engine (11) for lubricating the first power unit (1) and the second power unit (2).

8. The hybrid fracturing system according to claim 7, characterized in that, The auxiliary unit (3) also includes an intake unit (32), an exhaust unit (33), and a ventilation unit (34). The ventilation unit (34) is located above the engine (11) for heat dissipation of the engine (11). The intake unit (32) is located on one side of the ventilation unit (34) for absorbing air. The exhaust unit (33) is located on the other side of the ventilation unit (34) and between the engine (11) and the transfer case (12) for discharging exhaust gas.

9. The hybrid fracturing system according to claim 7, characterized in that, It also includes a control unit (4), which is located on one side of the first power unit (1) and is electrically connected to the first power unit (1), the second power unit (2) and the auxiliary unit (3) respectively.

10. A hybrid power fracturing device, characterized in that, Includes the hybrid fracturing system as described in any one of claims 1-9; The hybrid fracturing equipment also includes a first transport device (7) and a second transport device (8). The first transport device (7) includes a first power unit (1), an auxiliary unit (3), a control unit (4), a generator (22), and an electric motor (21). The second transport device (8) includes an energy storage unit (24) and a frequency converter (23).

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