Variable speed integrated machine and wellsite equipment

Abstract

A variable speed integrated machine and its well site equipment are disclosed. The variable speed integrated machine includes: a drive unit including a motor and a housing for accommodating the motor; an inverter unit disposed on the housing and electrically connected to the motor; an inverter heat dissipation device disposed on the side of the inverter unit away from the housing and configured to dissipate heat from the inverter unit using a coolant cooling method; and a drive heat dissipation device, at least a portion of which is disposed on the housing and configured to dissipate heat from the drive unit using at least one of a coolant cooling method and an air cooling method; wherein at least a portion of the drive heat dissipation device and the inverter unit are disposed on the same side of the housing. The variable speed integrated machine provided in this disclosure reduces the space occupied by the drive heat dissipation device and the inverter unit on the variable speed integrated machine, thereby reducing the overall size of the machine.

Description

Technical Field

[0001] This disclosure relates to an integrated speed changer and well site equipment including the integrated speed changer. Background Technology

[0002] In current oil and gas field fracturing operations, multiple fracturing machines (e.g., 10 to 30 units) are typically used in a concentrated manner, requiring a large area. To reduce the number of machines, the application of high-power fracturing equipment is increasing.

[0003] High-power fracturing equipment primarily employs two drive methods: diesel-driven and electric-driven. For example, in diesel-driven fracturing equipment, the power source is a diesel engine, the transmission consists of a gearbox and drive shaft, and the actuator is a plunger pump. In electric-driven fracturing equipment, the power source is an electric motor, the transmission is a drive shaft or coupling, and the actuator is a plunger pump. Summary of the Invention

[0004] This disclosure provides a first aspect of a variable speed integrated machine, comprising: a drive unit including a motor and a housing for accommodating the motor; an inverter unit disposed on the housing and electrically connected to the motor; an inverter heat dissipation device disposed on the side of the inverter unit away from the housing and configured to dissipate heat from the inverter unit by means of coolant cooling; and a drive heat dissipation device, at least a portion of which is disposed on the housing and configured to dissipate heat from the drive unit by means of at least one of coolant cooling and air cooling; wherein at least a portion of the drive heat dissipation device and the inverter unit are disposed on the same side of the housing.

[0005] In at least some embodiments, the housing defines a cavity for accommodating the motor, and the drive cooling device includes an air-cooled heat dissipation mechanism, the air-cooled heat dissipation mechanism including an air outlet assembly communicating with the cavity, the air outlet assembly and the inverter device being disposed on the same side of the housing.

[0006] In at least some embodiments, the air-cooled heat dissipation mechanism includes at least two air outlet components, wherein the air outlet directions of the at least two air outlet components are the same or different from each other.

[0007] In at least some embodiments, the air outlet assembly includes: a cooling fan disposed on the housing; a fan volute disposed between the cooling fan and the housing; and an exhaust duct; wherein a first side of the fan volute is in communication with the cooling fan, a second side of the fan volute is in communication with the cavity, a third side of the fan volute is in communication with the exhaust duct, the motor includes an output shaft, and the first side and the second side are opposite to each other in a direction perpendicular to the output shaft; wherein the cooling fan is configured to draw gas from the cavity into the fan volute and discharge the gas through the exhaust duct.

[0008] In at least some embodiments, the exhaust duct includes: an air outlet facing away from the housing; and an air outlet cover rotatably connected to the air outlet and configured to cover the air outlet.

[0009] In at least some embodiments, the motor includes an output shaft extending from the housing, the housing including a first side and a second side opposite to each other in a direction perpendicular to the output shaft, the air outlet assembly and the inverter being disposed on the first side of the housing; the air-cooling heat dissipation mechanism further includes an air inlet assembly including an air inlet disposed on the second side of the housing, the air inlet being configured to communicate with the cavity so that gas entering the cavity from the air inlet passes through the motor and is discharged from the air outlet assembly.

[0010] In at least some embodiments, the air inlet assembly further includes: a groove disposed on the second side of the housing, the air inlet being disposed within the groove; and a protective net covering the air inlet; wherein the plane of the protective net is not coplanar with the outer surface of the second side of the housing, and the plane of the protective net is closer to the motor than the outer surface of the second side of the housing.

[0011] In at least some embodiments, the drive cooling device includes: a coolant cooling mechanism, the coolant cooling mechanism including: a first cooling component disposed in a cavity defined by the housing to house the motor; a first fan component disposed on the housing; and a first coolant storage component disposed between the first fan component and the housing, the first coolant storage component communicating with the first cooling component and configured to supply coolant to the first cooling component, the first fan component being configured to dissipate heat from the coolant in the first coolant storage component; wherein the first coolant storage component, the first fan component, and the inverter are all disposed on the same side of the housing.

[0012] In at least some embodiments, the inverter cooling device and the drive cooling device share the first coolant storage assembly and the first fan assembly; the inverter cooling device includes an inverter cooling plate disposed on the side of the inverter device away from the housing, the shared first fan assembly is disposed on the side of the inverter cooling plate away from the housing, and the shared first coolant storage assembly is disposed between the shared first fan assembly and the inverter cooling plate.

[0013] In at least some embodiments, the motor includes an output shaft extending from the housing, the housing including a first side and a second side opposite to each other in a direction perpendicular to the output shaft; the common first coolant storage assembly, the common first fan assembly, the inverter and the inverter cooling plate are all disposed on the first side of the housing, the inverter covering part or all of the outer surface of the first side of the housing.

[0014] In at least some embodiments, the inverter heat dissipation device includes: an inverter cooling channel disposed in the inverter cooling plate and including an inverter cooling channel inlet and an inverter cooling channel outlet. The first cooling assembly includes: a first cooling channel, at least a portion of which is disposed in the motor and includes a first cooling channel inlet and a first cooling channel outlet. The first coolant storage assembly includes: a coolant storage chamber, the coolant storage chamber including: an output end for discharging coolant to the inverter cooling channel and the first cooling channel; and an input end for receiving coolant returning from the inverter cooling channel and the first cooling channel; wherein the inverter cooling channel inlet and the first cooling channel inlet are respectively connected to the output end, and the inverter cooling channel outlet and the first cooling channel outlet are respectively connected to the input end.

[0015] In at least some embodiments, the inverter heat dissipation device includes: an inverter cooling channel disposed in the inverter cooling plate and including an inverter cooling channel inlet and an inverter cooling channel outlet. The first cooling assembly includes: a first cooling channel, at least a portion of which is disposed in the motor and includes a first cooling channel inlet and a first cooling channel outlet. The first coolant storage assembly includes: a coolant storage chamber, the coolant storage chamber including: an output end for discharging coolant to the inverter cooling channel and the first cooling channel; and an input end for receiving coolant returning from the inverter cooling channel and the first cooling channel; wherein the inverter cooling channel inlet is connected to the output end, the inverter cooling channel outlet is connected to the first cooling channel inlet, and the first cooling channel outlet is connected to the input end.

[0016] In at least some embodiments, the drive heat dissipation device includes an air-cooled heat dissipation mechanism and a coolant heat dissipation mechanism; at least a portion of the air-cooled heat dissipation mechanism, at least a portion of the coolant heat dissipation mechanism, and the inverter device are all disposed on the same side of the housing.

[0017] In at least some embodiments, the housing defines a cavity for accommodating the motor; the air-cooling mechanism includes an air outlet assembly communicating with the cavity. The coolant cooling mechanism includes: a first cooling assembly disposed within the cavity for accommodating the motor defined by the housing; a first fan assembly disposed on the housing; and a first coolant storage assembly disposed between the first fan assembly and the housing, the first coolant storage assembly communicating with the first cooling assembly and configured to supply coolant to the first cooling assembly, the first fan assembly being configured to dissipate heat from the coolant in the first coolant storage assembly; the air outlet assembly, the first coolant storage assembly, the first fan assembly, and the inverter are all disposed on the same side of the housing.

[0018] In at least some embodiments, the motor includes an output shaft, a stator, and a rotor, the output shaft extending from the housing; the first cooling assembly includes a first cooling channel, at least a portion of which is disposed in the stator in a direction parallel to the output shaft; the air-cooled heat dissipation mechanism further includes an air inlet assembly, the air inlet assembly including an air inlet disposed on the housing, the air inlet being configured to communicate with the cavity so that gas entering the cavity from the air inlet is discharged from the air outlet assembly via the rotor.

[0019] In at least some embodiments, the inverter heat dissipation device includes: an inverter cooling channel disposed in the inverter cooling plate and including an inverter cooling channel inlet and an inverter cooling channel outlet. The first cooling assembly includes: a first cooling channel, at least a portion of which is disposed in the motor and includes a first cooling channel inlet and a first cooling channel outlet. The first coolant storage assembly includes: a coolant storage chamber, the coolant storage chamber including: an output end for discharging coolant to the inverter cooling channel and the first cooling channel; and an input end for receiving coolant returning from the inverter cooling channel and the first cooling channel; wherein the inverter cooling channel inlet and the first cooling channel inlet are respectively connected to the output end, and the inverter cooling channel outlet and the first cooling channel outlet are respectively connected to the input end.

[0020] In at least some embodiments, the inverter heat dissipation device includes: an inverter cooling channel disposed in the inverter cooling plate and including an inverter cooling channel inlet and an inverter cooling channel outlet. The first cooling assembly includes: a first cooling channel, at least a portion of which is disposed in the motor and includes a first cooling channel inlet and a first cooling channel outlet. The first coolant storage assembly includes: a coolant storage chamber, the coolant storage chamber including: an output end for discharging coolant to the inverter cooling channel and the first cooling channel; and an input end for receiving coolant returning from the inverter cooling channel and the first cooling channel; wherein the inverter cooling channel inlet is connected to the output end, the inverter cooling channel outlet is connected to the first cooling channel inlet, and the first cooling channel outlet is connected to the input end.

[0021] In at least some embodiments, the inverter cooling device and the drive cooling device share the first coolant storage assembly and the first fan assembly; the inverter cooling device includes an inverter cooling plate disposed on the side of the inverter device away from the housing, the shared first fan assembly is disposed on the side of the inverter cooling plate away from the housing, and the shared first coolant storage assembly is disposed between the shared first fan assembly and the inverter cooling plate.

[0022] In at least some embodiments, the motor includes a bottom and a top; the housing includes a bottom surface on the same side as the bottom of the motor and a top surface on the same side as the top of the motor; wherein at least a portion of the drive heat dissipation device, the inverter device, and the inverter heat dissipation device are all disposed on the top surface of the housing.

[0023] The second aspect of this disclosure provides a well site device, including the aforementioned integrated speed changer. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure, and are not intended to limit this disclosure.

[0025] Figure 1 This is a perspective view of a speed-changing integrated machine according to an embodiment of the present disclosure from a first-view perspective.

[0026] Figure 2 for Figure 1 A schematic diagram of the integrated speed changer.

[0027] Figure 3 for Figure 1 A three-dimensional schematic diagram of the integrated transmission machine from a second-view perspective.

[0028] Figure 4 for Figure 1 A schematic diagram of the drive unit and the drive cooling unit.

[0029] Figure 5 for Figure 1 A schematic diagram of the inverter cooling plate.

[0030] Figure 6 For along Figure 2 A schematic diagram of the inverter and inverter heat dissipation device.

[0031] Figure 7 for Figure 3 An enlarged bottom view of the integrated speed control unit.

[0032] Figure 8 This is a schematic diagram of the structure of a variable speed integrated machine according to another embodiment of the present disclosure.

[0033] Figure 9 This is a perspective view of a speed-changing integrated machine according to another embodiment of the present disclosure.

[0034] Figure 10 for Figure 9 A schematic diagram of the integrated speed changer.

[0035] Figure 11 This is a cross-sectional schematic diagram of the stator in a drive device according to an embodiment of the present disclosure.

[0036] Figure 12 This is a perspective structural diagram of a speed-changing integrated machine according to another embodiment of the present disclosure.

[0037] Figure 13 for Figure 12 A schematic diagram of the integrated speed changer.

[0038] Figures 14 to 19 A schematic diagram illustrating an example connection of a first cooling channel and an inverter cooling channel connected in parallel.

[0039] Figure 20 and Figure 21 A schematic diagram illustrating an example connection of a first cooling channel and an inverter cooling channel connected in series.

[0040] Figure 22 This is a perspective view of a speed-changing integrated machine according to yet another embodiment of the present disclosure.

[0041] Figures 23 to 24 This schematic diagram illustrates an example of a first cooling channel and an inverter cooling channel connected in parallel when both air cooling and coolant cooling are used to cool the motor.

[0042] Figure 25 This schematic diagram illustrates an example of a connection block diagram of a first cooling channel and an inverter cooling channel connected in series when both air cooling and coolant cooling are used to cool the motor.

[0043] Figure 26 This is a schematic diagram of the structure of an electrically driven fracturing device provided according to an embodiment of this disclosure. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0045] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” indicate that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0046] Compared to diesel-powered fracturing equipment, electric fracturing equipment offers advantages such as lower noise and zero exhaust emissions. However, existing electric fracturing equipment requires a dedicated frequency converter to adjust the motor speed. This frequency converter includes a rectifier unit (such as a rectifier transformer) and an inverter, resulting in a large footprint and weight, making transportation or relocation inconvenient. Furthermore, the numerous cables connecting the motor and the frequency converter complicate operation.

[0047] To address this issue, a speed-changing integrated unit is proposed, where the motor and inverter are integrated into a single design. The rectifier unit is not located on the integrated unit, but is instead set up independently of the motor and inverter. This allows for speed regulation and drive functionality with a single integrated unit. This not only effectively reduces the space occupied by the motor and inverter on the electric fracturing equipment, but also lowers the equipment's weight, making transportation easier. Furthermore, it provides more space for installing other equipment on the fracturing machine.

[0048] During the operation of the variable speed integrated machine, the motor and inverter have high power and generate a lot of heat. Therefore, a heat dissipation device is needed to dissipate heat from the variable speed integrated machine to ensure that the motor and inverter can work continuously within the normal temperature range.

[0049] At least one embodiment of this disclosure provides a variable speed integrated machine, comprising: a drive device including a motor and a housing for accommodating the motor; an inverter device disposed on the housing and electrically connected to the motor; an inverter heat dissipation device disposed on the side of the inverter device away from the housing and configured to dissipate heat from the inverter device by means of coolant cooling; and a drive heat dissipation device, at least a portion of which is disposed on the housing and configured to dissipate heat from the drive device by means of at least one of coolant cooling and air cooling; wherein at least a portion of the drive heat dissipation device and the inverter device are disposed on the same side of the housing.

[0050] In the integrated speed control unit provided in at least one embodiment of this disclosure, the inverter heat dissipation device is used to dissipate heat from the inverter device, and the drive heat dissipation device is used to dissipate heat from the drive device, which effectively ensures the continuous operation of the drive device and the inverter device at normal temperature in the well site.

[0051] When at least a portion of the drive cooling device and the inverter in a variable speed drive unit are located on different sides of the housing, the drive cooling device and the inverter are distributed dispersedly on the surface of the housing. This may result in a less compact structure and an increased overall size of the variable speed drive unit. When a variable speed drive unit with a large overall size is applied to well site equipment such as fracturing equipment or cementing equipment, it will occupy a large space on the well site. If additional equipment needs to be added to the well site later, there will not be enough installation space, thus posing significant challenges to subsequent work.

[0052] In the integrated speed control unit provided in at least one embodiment of this disclosure, by placing at least a portion of the drive cooling device and the inverter on the same side of the housing, the space occupied by the drive cooling device and the inverter on the integrated speed control unit is saved, thereby reducing the overall size of the integrated speed control unit. When the integrated speed control unit with a smaller overall size is applied to well site equipment, the space it occupies on the well site equipment is also reduced due to the reduced overall size of the integrated speed control unit, thus providing more space for installing other devices on the well site equipment.

[0053] Furthermore, for example, during fracturing operations, multiple electrically driven fracturing trucks (also known as electrically driven fracturing truck groups) are typically used together to perform fracturing operations. To reduce the footprint of the electrically driven fracturing truck groups at the well site, multiple electrically driven fracturing trucks are usually parked side by side, that is, parallel to each other and spaced a certain distance apart. In this case, if at least a part of the drive cooling device and the inverter in the transmission unit of each electrically driven fracturing truck are located on different sides of the casing (for example, the inverter is located on the top surface of the casing, and at least a part of the drive cooling device is located on the side surface of the casing), then at least a part of the drive cooling device located on the side may be too close to the adjacent electrically driven fracturing truck, thus affecting the heat dissipation effect of the adjacent electrically driven fracturing truck.

[0054] In the integrated transmission unit provided in at least one embodiment of this disclosure, by arranging at least a portion of the drive cooling device and the inverter on the same side of the housing, the impact on the heat dissipation effect of the drive unit of the electric fracturing truck caused by the small distance between the drive cooling device and the adjacent electric fracturing truck can be minimized or even eliminated. In particular, when at least a portion of the drive cooling device and the inverter are both arranged on the top surface of the housing, since the top space of the electric fracturing truck is occupied, the side space is not affected, and even if the lateral distance between the two electric fracturing trucks is small, the heat dissipation effect of the two electric fracturing trucks is not affected.

[0055] In this embodiment of the disclosure, the coolant heat dissipation method refers to using a coolant to carry away the heat generated by the device to be cooled, thereby achieving the purpose of heat dissipation. The coolant includes, for example, a liquid fluid, which includes, but is not limited to, at least one of water, organic matter, or inorganic matter.

[0056] In this embodiment, the air-cooled heat dissipation method, also known as the air-cooled heat dissipation method, refers to achieving heat dissipation by introducing air into the device to be cooled. Compared with the coolant cooling method, the air-cooled heat dissipation method has a simpler structure, smaller size, lighter weight, lower thermal resistance, larger heat exchange area, and is very convenient to use and install.

[0057] In this embodiment of the disclosure, "same side of the housing" refers, for example, the same surface of the housing of the drive device. When the housing of the drive device includes multiple surfaces, at least a portion of the drive heat dissipation device and the inverter device are disposed on the same surface among the multiple surfaces of the housing. In this embodiment of the disclosure, "multiple" refers to two or more.

[0058] In this embodiment of the disclosure, the drive cooling device can dissipate heat from the drive device using at least one of two methods: coolant cooling and air cooling. That is, the drive cooling device can dissipate heat from the drive device using only coolant cooling; or, the drive cooling device can dissipate heat from the drive device using only air cooling; or, the drive cooling device can dissipate heat from the drive device using both coolant cooling and air cooling simultaneously. In all embodiments of this disclosure, the inverter cooling device uses coolant cooling.

[0059] The present disclosure will now be described through several specific embodiments. To keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present disclosure appears in more than one drawing, that component may be represented by the same reference numerals in each drawing.

[0060] Figure 1 This is a perspective view of a speed-changing integrated machine according to an embodiment of the present disclosure from a first-view perspective. Figure 2 for Figure 1 A schematic diagram of the integrated speed changer.

[0061] like Figures 1 to 2 As shown, at least one embodiment of the present disclosure provides a variable speed integrated machine including a drive device 1, a drive heat dissipation device 2, an inverter device 3, and an inverter heat dissipation device 4.

[0062] For example, the drive unit 1 includes a motor 10 and a housing 12 for accommodating the motor 10. The motor 10 (also called a motor) is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque, serving as a power source for well site equipment. The motor can be an AC motor or a DC motor. In this embodiment, the motor 10 is an AC motor, meaning that DC power is converted to AC power.

[0063] For example, such as Figure 2 As shown, the housing 12 defines a cavity 13 for accommodating the motor 10. That is, the motor 10 is disposed inside the housing 12. The surface of the housing 12 facing the motor 10 is the inner surface, and the surface facing away from the motor 10 is the outer surface, such as the top surface, bottom surface, and side surface.

[0064] like Figure 1 and Figure 2As shown, the outer casing 12 is basically rectangular. In at least some embodiments, the outer casing 12 can also be a columnar body such as a cube or cylinder. The present disclosure does not limit the shape of the outer casing 12. When the outer casing 12 is rectangular or cubic, it is beneficial to fix the inverter 3 and the inverter heat dissipation device 4 on the outer casing 12, thereby enhancing the stability of the entire device.

[0065] Figure 3 for Figure 1 A three-dimensional schematic diagram of the integrated transmission machine from a second-view perspective. Figure 4 for Figure 1 A schematic diagram of the drive unit and the drive cooling unit.

[0066] like Figure 1 , Figure 2 and 4 As shown, the motor 10 includes an output shaft 14, a stator 15, a rotor 16, an end cover 17, and a bearing cover 18.

[0067] For example, such as Figure 4 As shown, the stator 15 is the fixed part of the motor 10, and its function is to generate a magnetic field and serve as a mechanical support for the motor. The stator 15 is, for example, the outermost cylinder, with many windings wound inside the cylinder. These windings are connected to an external AC power supply, and the entire cylinder is connected to the frame and fixed in place. The stator 15 includes, for example, a stator core, stator windings, and a frame.

[0068] For example, rotor 16 is the rotating part of motor 10. Rotor 16 is disposed in the internal cavity of stator 15, connected to power output shaft 14 of motor 10, and rotates at the same speed. Rotor 16 includes, for example, a rotor core and rotor windings. There is no connection or contact between stator 15 and rotor 16, but when the stator windings are connected to AC power, rotor 16 immediately begins to rotate and outputs power through power output shaft 14.

[0069] For example, such as Figure 1 , Figure 2 and Figure 4 As shown, the output shaft 14 extends from the end cap 17 of the housing 12 and along a first direction (e.g., Figure 2 The housing 12 extends in a second direction perpendicular to the x-direction (e.g., the x-direction shown). Figure 2 The first side S1 and the second side S2 are opposite to each other in the y-direction (as shown in the diagram). For example, the first side S1 is... Figure 2 As shown above, the second side S2 is Figure 2 The lower side is shown. The housing 12 has a top surface F1 and a bottom surface F2 corresponding to the upper and lower sides, respectively.

[0070] For example, such as Figure 3As shown, the housing 12 also includes a third-party orientation (e.g.) Figure 2 The third side S3 and the fourth side S4 are opposite to each other in the z direction shown in the diagram. Accordingly, the housing 12 has two side surfaces F3 and F4 corresponding to the third side S3 and the fourth side S4, respectively.

[0071] In at least some embodiments, the inverter 3 may be located on one of the first side S1, the second side S2, the third side S3, and the fourth side S4 of the housing 12. For example, the inverter 3 may be located on one of the top surface F1, the bottom surface F2, and the two side surfaces F3 of the housing 12. Figure 1 and Figure 2 As shown, the inverter 3 is located, for example, on the top surface F1 of the housing 12, and the top surface F1 of the housing 12 provides a fixed support for the inverter 3.

[0072] When the integrated transmission speed reducer is applied to well site equipment such as an electric fracturing truck, the inverter 3 is located on one of the first side S1, the third side S3, and the fourth side S4 of the housing 12. That is, the inverter 3 is not located on the second side S2 of the housing 12, because the second side S2, as the bottom of the integrated transmission speed reducer, may come into direct contact with the electric fracturing truck when the integrated transmission speed reducer is placed or installed on the electric fracturing truck.

[0073] This disclosure does not limit the connection method between the inverter 3 and the housing 12, as long as they can be fixedly installed together. For example, the housing 12 and the inverter 3 can be fixedly installed by means of bolts, riveting, or welding.

[0074] In at least some embodiments, the inverter 3 is an inverter that is electrically connected to the motor 10. For example, the inverter 3 is connected to the motor 10 via a power supply line to supply power to the motor 10. Typically, when the frequency converter performs frequency conversion on the AC power supply, it first converts the AC power into DC power, which is "rectification", and then converts the DC power into AC power of a variable frequency, which is "inversion".

[0075] The speed-changing integrated machine of this embodiment integrates an inverter and a motor, excluding a rectifier unit. Therefore, only the inverter 3 is provided on the drive unit 1, reducing the overall size and weight of the speed-changing integrated machine. The inverter 3 outputs variable frequency AC power to the motor 10 to regulate the speed of the motor 10.

[0076] like Figure 1 and Figure 2 As shown, the inverter heat dissipation device 4 is disposed on the side of the inverter 3 away from the housing 12. That is, the inverter 3 and the inverter heat dissipation device 4 are both disposed on the same side of the housing 12, and the inverter 3 is located between the housing 12 and the inverter heat dissipation device 4.

[0077] When the inverter 3 and the inverter cooling device 4 are respectively located on different sides of the housing 12, they are situated on different surfaces of the housing 12, which increases the overall size of the integrated transmission. Furthermore, since the inverter cooling device 4 uses coolant to dissipate heat from the inverter 3, when they are located on different surfaces of the housing 12, the length of the cooling pipes supplying the coolant needs to be longer, which will affect the heat dissipation effect of the inverter cooling device 4 on the inverter 3.

[0078] In at least one embodiment of the variable speed integrated machine disclosed herein, by setting the inverter 3 and the inverter heat dissipation device 4 to be located on the same side of the housing 12, not only is the structure of the variable speed integrated machine more compact, but the heat dissipation effect of the inverter heat dissipation device 4 on the inverter 3 is also guaranteed.

[0079] For example, such as Figure 1 As shown, the inverter cooling device 4 includes an inverter cooling plate 41 (also called a water-cooled plate), an inverter coolant storage assembly 42, and an inverter fan assembly 43. The inverter cooling plate 41, the inverter coolant storage assembly 42, and the inverter fan assembly 43 are sequentially arranged on the first side S1 of the housing 12, for example, on the top surface F1. That is, the inverter cooling plate 41 is arranged on the side of the inverter device 3 away from the housing 12, the inverter coolant storage assembly 42 is arranged on the side of the inverter cooling plate 41 away from the housing 12, and the inverter fan assembly 43 is arranged on the side of the inverter coolant storage assembly 42 away from the housing 12.

[0080] For example, such as Figure 2 As shown, the inverter 3 is located between the top surface F1 of the housing 12 and the inverter cooling plate 41. The inverter 3 includes a first surface BM1 close to the housing 12 and a second surface BM2 away from the housing 12. That is, the first surface BM1 and the second surface BM2 are opposite to each other in a direction perpendicular to the output shaft 14 (e.g., the y-direction shown in the figure), and the first surface BM1 is closer to the housing 12 than the second surface BM2. The inverter cooling plate 41 is located on the second surface BM2 and is in direct contact with the second surface BM2. In this way, when coolant is introduced into the inverter cooling plate 41, the contact between the inverter cooling plate 41 and the second surface BM2 of the inverter 3 facilitates heat conduction, thus enabling more effective cooling of the inverter 3.

[0081] For example, the inverter cooling plate 41 and the inverter unit 3 overlap each other in a direction perpendicular to the output shaft 14 (e.g., the y-direction shown in the figure). This overlap can be partial or complete. Figure 2As shown, the inverter cooling plate 41 and the inverter device 3 completely overlap in the y direction, that is, the inverter cooling plate 41 completely covers the second surface BM2 of the inverter device 3, which increases the heat conduction area and achieves better heat dissipation.

[0082] Figure 5 for Figure 1 A schematic diagram of the inverter cooling plate. For example, as... Figure 5 As shown, the inverter cooling plate 41 includes, for example, an inverter cooling channel 51. The inverter cooling channel 51 includes at least one inverter cooling pipe, an inverter cooling channel inlet 51i, and an inverter cooling channel outlet 51o. At least one inverter cooling pipe, the inverter cooling channel inlet 51i, and the inverter cooling channel outlet 51o are located on the side of the inverter cooling plate 41 away from the inverter device 3, that is... Figure 2 The upper side of the inverter cooling plate 41 shown.

[0083] For example, the inverter cooling channel inlet 51i is connected to the first end (e.g., the right end shown in the figure) of at least one inverter cooling tube, and the inverter cooling channel outlet 51o is connected to the second end (e.g., the left end shown in the figure) of at least one inverter cooling tube, wherein the second end is different from the first end, and the first end and the second end are opposite to each other in the z direction.

[0084] When the inverter coolant flows in at least one inverter cooling pipe of the inverter cooling plate 41, it can exchange heat with the inverter unit 3 located below the inverter cooling plate 41, thereby achieving the purpose of cooling the inverter unit 3. To enhance the cooling effect, the inverter cooling plate 41 and the inverter unit 3 are in direct contact. In one example, the inverter coolant includes water.

[0085] For example, the inverter cooling channel 51 includes inverter cooling pipes 51a and 51b. Inverter cooling pipes 51a and 51b share an inverter cooling channel inlet 51i and an inverter cooling channel outlet 51o. That is, both inverter cooling pipes 51a and 51b are connected to the inverter cooling channel inlet 51i and the inverter cooling channel outlet 51o. When the inverter coolant enters from the inverter cooling channel inlet 51i, it flows into inverter cooling pipes 51a and 51b respectively, exchanging heat with the inverter device 3. Then, the heat-exchanged inverter coolant converges at the inverter cooling channel outlet 51o and flows out.

[0086] In this embodiment of the present disclosure, by setting two inverter cooling pipes 51a and 51b, a common inverter cooling channel inlet 51i, and a common inverter cooling channel outlet 51o, not only can the heat exchange area of ​​the water-cooled plate be increased and the cooling effect enhanced, but the manufacturing process of the inverter cooling plate can also be simplified and the manufacturing cost reduced.

[0087] In at least some embodiments, inverter cooling pipe 51a and inverter cooling pipe 51b may have the same or different pipe routing distributions. For example, as Figure 5 As shown, inverter cooling pipes 51a and 51b are mirror-symmetrical about the center line O1O2 of inverter cooling plate 41. Since inverter cooling pipes 51a and 51b have the same pipe routing, the manufacturing process of inverter cooling plate can be further simplified.

[0088] Figure 5 The diagram only schematically illustrates that the inverter cooling pipes 51a and 51b have an S-shaped routing. In other embodiments of this disclosure, the inverter cooling pipes 51a and 51b may have other routing arrangements, such as serrated or straight, which are not limited in this disclosure.

[0089] Figure 6 for Figure 2 A schematic diagram of the inverter and inverter cooling system. For example, as shown... Figure 6 As shown, the inverter coolant storage assembly 42 is disposed on the side of the inverter cooling plate 41 away from the inverter device 3, and includes an inverter coolant storage chamber 52 communicating with the inverter cooling plate 41 for storing inverter coolant and supplying inverter coolant to the inverter cooling plate 41. Here, inverter coolant refers to the coolant used to cool the inverter device 3.

[0090] For example, the first end of the inverter coolant storage chamber 52 (e.g., the right end shown in the figure) is connected to the inverter cooling channel inlet 51i via a first connecting pipe 53, and the second end of the inverter coolant storage chamber 52 (e.g., the left end shown in the figure) is connected to the inverter cooling channel outlet 51o via a second connecting pipe 54, wherein the second end is different from the first end, and the first end and the second end are opposite to each other in the z-direction. In this embodiment of the present disclosure, the inverter coolant flows from the inverter coolant storage chamber 52 into the inverter cooling plate 41 through the first connecting pipe 53, and flows back from the inverter cooling plate 41 to the inverter coolant storage chamber 52 through the second connecting pipe 54, thereby achieving the purpose of recycling.

[0091] For example, the inverter fan assembly 43 is disposed on the side of the inverter coolant storage assembly 42 away from the inverter cooling plate 41, and dissipates heat from the inverter coolant in the inverter coolant storage chamber 52. The number of inverter fan assemblies 43 can be one or more. Those skilled in the art can determine the specific number of inverter fan assemblies 43 based on the area of ​​the inverter coolant storage assembly 42; this disclosure does not limit this number.

[0092] For example, the inverter fan assembly 43 includes a first inverter fan assembly 43a and a second inverter fan assembly 43b. The first inverter fan assembly 43a and the second inverter fan assembly 43b are arranged side by side along the z-direction above the inverter coolant storage chamber 52.

[0093] For example, the first inverter fan assembly 43a includes a cooling fan 45 and a cooling motor 47. The cooling motor 47 is mounted on the inverter coolant storage assembly 42, and the cooling fan 45 is located between the cooling motor 47 and the inverter coolant storage assembly 42. When the cooling motor 47 is working, it drives the impeller of the cooling fan 45 to rotate, and the air generated by the rotation of the impeller cools the inverter coolant in the inverter coolant storage assembly 42 (e.g., inverter coolant storage chamber 52) by cooling.

[0094] For example, the second inverter fan assembly 43b includes a cooling fan 46 and a cooling motor 48. The cooling motor 48 is mounted on the inverter coolant storage assembly 42, and the cooling fan 46 is located between the cooling motor 48 and the inverter coolant storage assembly 42. When the cooling motor 48 is working, it drives the impeller of the cooling fan 46 to rotate, and the air generated by the rotation of the impeller cools the inverter coolant in the inverter coolant storage assembly 42 (e.g., the inverter coolant storage chamber 52) by cooling.

[0095] Compared to installing only one inverter fan assembly on the inverter coolant storage chamber 52, using the first inverter fan assembly 43a and the second inverter fan assembly 43b can simultaneously cool the inverter coolant in the inverter coolant storage chamber 52, thereby enhancing the cooling effect.

[0096] The working principle of inverter cooling device 4 is explained below. Figure 6 As shown, when the inverter cooling device 4 is working, the inverter coolant flows from the inverter coolant storage chamber 52 into the inverter cooling channel 51 through the inverter cooling channel inlet 51i and the first connecting pipe 53, and then flows in the inverter cooling channel 51 along the first moving direction v1. During the flow, the inverter coolant carries away the heat generated by the heat-generating components in the inverter device 3 through heat exchange, thus cooling the heat-generating components. After the inverter coolant has exchanged heat with the heat-generating components, the heated inverter coolant flows back to the inverter coolant storage chamber 52 through the inverter cooling channel outlet 51o and the second connecting pipe 54. Next, the inverter coolant flowing back to the inverter coolant storage chamber 52 flows along the second moving direction v2. At the same time, the first inverter fan assembly 43a and the second inverter fan assembly 43b cool the inverter coolant, so that the cooled inverter coolant flows back into the inverter cooling plate 41 to continue cooling the inverter device 3. It should be noted that, in order to avoid leakage, the inverter coolant in this embodiment is electrically isolated from the electrical components in the inverter device 3.

[0097] In the inverter heat dissipation device 4 of this embodiment, by providing an inverter cooling plate 41, an inverter coolant storage assembly 42, and an inverter fan assembly 43, not only is the heat dissipation effect on the inverter device 3 improved, but the overall size of the integrated transmission unit is also reduced. Furthermore, since the inverter coolant is recyclable, production costs are reduced, wastewater discharge is decreased, and environmental pollution is avoided.

[0098] like Figures 1 to 4 As shown, for example, the drive cooling device 2 dissipates heat from the drive device 1 using only air cooling. In this case, the drive cooling device 2 only includes an air cooling mechanism.

[0099] In at least some embodiments, at least a portion of the air-cooled heat dissipation mechanism is disposed on the same side of the housing 12 as the airflow counter 3. For example, as Figure 1 and Figure 2 As shown, the air-cooled heat dissipation mechanism 2A includes an air outlet assembly 20 communicating with the cavity 13 of the housing 12. The air outlet assembly 20, the reverse air device 3, and the reverse air heat dissipation device 4 are disposed on the same side of the housing 12 (e.g., the first side S1 shown in the figure). By disposing of the air outlet assembly 20, the inverter device 3, and the reverse air heat dissipation device 4 on the same top surface F1 of the housing 12, the space occupied by the drive heat dissipation device 2, the inverter device 3, and the inverter heat dissipation device 4 on the integrated gearbox is saved, thus reducing the overall size of the integrated gearbox. When the integrated gearbox with a smaller overall size is applied to well site equipment, the space occupied by the integrated gearbox on the well site equipment is also reduced due to the reduced overall size of the integrated gearbox, thus providing more space for the installation of other devices on the well site equipment.

[0100] like Figure 2 As shown, for example, the drive unit 1 includes a first end E1 and a second end E2 opposite to each other in the x-direction, wherein the first end E1 is close to the output shaft 14 and is the shaft extension end of the drive unit 1. The second end E2 is away from the output shaft 14 and is the non-shaft extension end of the drive unit 2. The inverter unit 3 and the inverter heat dissipation device 4 are stacked on a portion of the top surface F1 of the housing 12 near the first end E1, while the air outlet assembly 20 is disposed on another portion of the top surface F1 of the housing 12 near the second end E2. By disposing the air outlet assembly 20 and the inverter unit 3 (and the inverter heat dissipation device 4) at the first end E1 and the second end E2 respectively, not only is the top surface space of the housing 12 fully utilized, but mutual interference between the drive heat dissipation device and the inverter heat dissipation device 4 during heat dissipation is also avoided.

[0101] In at least some embodiments, the number of air outlet components 20 can be one or more. When the air-cooled heat dissipation mechanism 2A includes multiple air outlet components, the heat dissipation effect on the drive device 1 can be enhanced by using multiple air outlet components to dissipate heat simultaneously.

[0102] For example, such as Figure 1 and Figure 2 As shown, the air-cooled heat dissipation mechanism 2A includes a first air outlet assembly 20a and a second air outlet assembly 20b. The first air outlet assembly 20a and the second air outlet assembly 20b are arranged side by side along the z-direction on the top surface F1. The first air outlet assembly 20a, the second air outlet assembly 20b, the reverse airflow device 3, and the reverse airflow heat dissipation device 4 are all arranged on the same side of the housing 12, for example, on the same top surface F1. By arranging the first air outlet assembly 20a, the second air outlet assembly 20b, the inverter device 3, and the reverse airflow heat dissipation device 4 on the same top surface F1 of the housing 12, the space occupied by the drive heat dissipation device 2, the inverter device 3, and the inverter heat dissipation device 4 on the integrated transmission is further saved, reducing the overall size of the integrated transmission. In addition, the heat dissipation effect of the drive heat dissipation device 2 on the drive device 1 is enhanced.

[0103] In at least some embodiments, the first air outlet assembly 20a and the second air outlet assembly 20b may have the same structure or different structures. When the first air outlet assembly 20a and the second air outlet assembly 20b have the same structure, the difficulty of arranging the air outlet assemblies on the housing 12 can be reduced, and the manufacturing process can be simplified.

[0104] For example, the first air outlet assembly 20a includes a cooling fan 21a, an exhaust duct 22a, and a fan casing 25a. The cooling fan 21a is disposed on the top surface F1 of the housing 10, and the fan casing 25a is located between the cooling fan 21a and the top surface F1. A first side 251 (e.g., the upper end shown in the figure) of the fan casing 25a communicates with the cooling fan 21a, a second side 252 (e.g., the lower side shown in the figure) communicates with the cavity 13 of the housing 12, and a third side 253 (e.g., the left side shown in the figure) communicates with the exhaust duct 22a. For example, the first side 251 and the second side 252 are opposite to each other in the y-direction, and the third side 253 is located between the first side 251 and the second side 252 and is located on the side of the fan casing 25a away from the inverter 3. By connecting the fan casing 25a to the cooling fan 21a, the exhaust duct 22a and the cavity 13 respectively, it is beneficial to extract the gas in the cavity 13 into the exhaust duct 22a when the cooling fan 21a is working.

[0105] For example, the exhaust duct 22a includes an air outlet 23a. The air outlet 23a faces away from the housing 12, for example, towards the top of the integrated transmission unit. By setting the air outlet 23a to face away from the housing 12, it facilitates the discharge of hotter air from the exhaust duct 22a. Furthermore, when the air is discharged towards the top of the integrated transmission unit through the air outlet 23a, interference or influence on the inverter 3 or the inverter cooling device 4 can be avoided, further ensuring the cooling effect of the inverter cooling device 4 on the inverter 3.

[0106] In actual well sites, windy or rainy weather may occur. If no shield is installed on the air outlet 23a, sand or rainwater may fall into the exhaust duct 22a. Especially when encountering extreme weather such as sandstorms, a large amount of sand falling into the exhaust duct may cause blockage of the exhaust duct 22a.

[0107] For example, an air outlet cover 24a is provided at the air outlet 23a. The air outlet cover 24a is rotatably connected to the air outlet 23a so that it covers the air outlet 23a. In this way, when it is necessary to cover the air outlet 23a, the air outlet cover 24a can be easily rotated to cover the air outlet 23a, thereby preventing external windblown sand or rainwater from falling into the exhaust duct 22a and avoiding blockage of the exhaust duct. For example, if the area of ​​the air outlet cover 24a is greater than or equal to the area of ​​the air outlet 23a, a better covering effect can be achieved.

[0108] The present invention does not limit the connection method of the air outlet cover 24a and the exhaust duct 22a, as long as the air outlet cover 24a can move relative to the air outlet 23a. For example, the two can be connected by hinges, screws or other methods.

[0109] Figure 2 Only one air outlet cover 24a is shown schematically. In other embodiments of this disclosure, multiple air outlet covers may be provided on the air outlet 23a. For example, two air outlet covers disposed opposite each other may be installed on the air outlet 23a. When the two air outlet covers are in the closed state, they can cover the air outlet 23a; when the two air outlet covers are in the open state, no air outlet cover is provided on the air outlet 23a, and the gas in the exhaust duct 22a can be discharged from the air outlet 23a. Thus, closing the two air outlet covers can also achieve the purpose of shielding the air outlet 23a. Therefore, the number of air outlet covers 24a is not limited in the embodiments of this disclosure.

[0110] For example, such as Figure 1 As shown, the first air outlet assembly 20a and the second air outlet assembly 20b have the same structure, and the first air outlet assembly 20a and the second air outlet assembly 20b have the same air outlet direction.

[0111] For example, the second air outlet assembly 20b includes a cooling fan 21b, an exhaust duct 22b, and a fan casing 25b. The cooling fan 21b is disposed on the top surface F1 of the housing 10, and the fan casing 25b is located between the cooling fan 21b and the top surface F1. A first side (not shown, but refer to the first side 251 of the fan casing 25a of the first fan assembly) of the fan casing 25b communicates with the cooling fan 21b, a second side (not shown, but refer to the first side 252 of the fan casing 25a of the first fan assembly) communicates with the cavity 13 of the housing 12, and a third side (not shown, but refer to the first side 253 of the fan casing 25a of the first fan assembly) communicates with the exhaust duct 22b. For example, the first and second sides are opposite each other in the y-direction, and the third side is located between the first and second sides of the fan casing 25b and on the side of the fan casing 25b away from the inverter 3. In this embodiment of the present disclosure, by connecting the fan casing 25b to the cooling fan 21b, the exhaust duct 22b and the cavity 13 respectively, it is beneficial for the gas in the cavity 13 to be discharged from the exhaust duct 22b when the cooling fan 21b is working.

[0112] For example, the exhaust duct 22b includes an air outlet 23b and an air outlet cover 24b. For example, the air outlet 23b has the same orientation as the air outlet 23a of the second air outlet assembly 20b, and also faces away from the housing 12, such as towards the top of the transmission unit. By setting the air outlet 23b to have the same orientation as the air outlet 23a of the second air outlet assembly 20b, interference or influence on the inverter 3 or the inverter cooling device 4 can be avoided, further ensuring the cooling effect of the inverter cooling device 4 on the inverter 3.

[0113] In the integrated speed reducer provided in the above embodiments, during the cooling process of the drive device 1 using the air-cooled heat dissipation mechanism 2A, the cooling fans 21a and 21b are turned on. At this time, the cooling fans 21a and 21b draw the gas in the cavity 13 into the fan housings 25a and 25b, and discharge it towards the top of the integrated speed reducer through the air outlets 23a and 23b of the exhaust ducts 22a and 22b (e.g., ...). Figure 2 (As shown by the thick black arrow in the middle), the flow of gas can thus achieve the effect of cooling the motor 10.

[0114] In at least some embodiments, a drain outlet may be provided at the bottom of the exhaust duct. For example, such as Figure 3As shown, a drain outlet 26a is provided at the bottom of the exhaust duct 22a near the housing 13, and a drain outlet 26b is provided at the bottom of the exhaust duct 22b near the housing 13. The drain outlets 26a and 26b are configured to discharge liquids (such as rainwater) flowing into the exhaust duct 22a. Furthermore, for example, guide pipes, such as flexible hoses or rigid pipes, can be connected to the drain outlets 26a and 26b to guide the discharged liquid to a collection device such as a water collection bucket, preventing the liquid from dripping directly from the drain outlets and affecting the drive device.

[0115] During heavy rain, rainwater may seep into the exhaust ducts 22a and 22b and accumulate at the bottom. If this continues for an extended period, the accumulated water may flow back into the fan turbine, affecting the cooling effect of the fan's heat dissipation mechanism on the drive unit. In this embodiment, by providing drain outlets 26a and 26b at the bottom of the exhaust ducts 22a and 22b, the accumulated water in the exhaust ducts 22a and 22b can be drained, thereby reducing or even eliminating the impact of accumulated water on the cooling effect.

[0116] For example, such as Figure 2 , Figure 3 and Figure 7 As shown, the air-cooled heat dissipation mechanism 2A also includes an air inlet assembly 30, which is disposed on a side of the housing 13 other than the first side, such as the second side S2. In this embodiment, the number of air inlet assemblies 30 can be one or more. When the air-cooled heat dissipation mechanism 2A includes multiple air inlet assemblies, the total amount of gas drawn into the driving device 1 can be increased, thereby improving the heat dissipation efficiency.

[0117] For example, such as Figure 2 As shown, the air-cooled heat dissipation mechanism 2A includes a first air inlet component 30a and a second air inlet component 30b, which are arranged side-by-side along the x-direction on the second side S2 of the housing 13. For example, the first air inlet component 30a is close to the second end E2 of the housing 13 and away from the first end E1 of the housing 13; the second air inlet component 30b is close to the first end E1 of the housing 13 and away from the second end E2 of the housing 13. By placing the first air inlet component 30a and the second air inlet component 30b at the first end E1 and the second end E2 of the housing 13 respectively, the space at the bottom of the housing can be fully and rationally utilized to achieve a better heat dissipation effect.

[0118] For example, such as Figure 3As shown, the first air inlet assembly 30a includes two air inlets 31a disposed on the second side S2 of the housing. Further, the two air inlets 31a are, for example, arranged side-by-side along the z-direction on the bottom surface F2 of the housing 12. In this embodiment, the number of air inlets 31a can be one or more. When the first air inlet assembly 30a includes multiple air inlets 31a, the heat dissipation effect on the drive device 1 can be enhanced.

[0119] For example, such as Figure 3 As shown, the second air inlet assembly 30b includes two air inlets 31b disposed on the second side S2 of the housing. Further, the two air inlets 31b are, for example, arranged side-by-side along the z-direction on the bottom surface F2 of the housing 12. In this embodiment, the number of air inlets 31b can be one or more. When the second air inlet assembly 30b includes multiple air inlets 31b, the heat dissipation effect on the drive device 1 can be enhanced.

[0120] In the integrated speed control unit provided in the above embodiment, during the process of cooling the drive device 1 using the air-cooled heat dissipation mechanism 2A, when the cooling fans 21a and 21b are turned on, outside air can be drawn into the cavity 13 through the two air inlets 31a and two air inlets 31b on the bottom surface F2 of the outer casing 12 (e.g., Figure 2 (As indicated by the thick black arrow in the middle), the motor 10 installed in cavity 13 is cooled down. Then, the air is exhausted from exhaust ducts 22a and 22b by the suction action of cooling fans 21a and 21b. It should be noted that the air drawn into cavity 13 can pass through the internal cavity 150 of stator 15 (see...) Figure 11 This achieves the heat dissipation effect on the motor 10.

[0121] In at least some embodiments, the first air inlet assembly 30a and the second air inlet assembly 30b may have the same structure or different structures. When the first air inlet assembly 30a and the second air inlet assembly 30b have the same structure, the manufacturing process can be simplified.

[0122] This embodiment of the invention is illustrated by taking the first air inlet component 30a and the second air inlet component 30b as having the same structure. Furthermore, this embodiment of the invention only describes the first air inlet component 30a. The specific structure and arrangement of the second air inlet component 30b can be referred to the first air inlet component 30a, and will not be repeated here.

[0123] Figure 7 for Figure 3 An enlarged bottom view of the integrated speed control unit. (See attached image.) Figure 7As shown, for example, the first air inlet assembly 30a also includes two grooves 32a formed on the second side S2 of the housing 12. Each groove 32a is recessed inward toward the motor 10. The two grooves 32a correspond one-to-one with the two air inlets 31a, that is, each air inlet 31a is disposed in one groove 32a.

[0124] For example, such as Figure 7 As shown, the first air inlet assembly 30a also includes two protective nets 33a, each corresponding to one of the two air inlets 31a, meaning each protective net 33a covers one air inlet 31a. If the air inlets 31a are not equipped with protective nets, external debris may be sucked into the cavity. By providing protective nets on the air inlets, external debris can be prevented from being sucked into the cavity 13 of the outer casing 12, thereby avoiding any impact on heat dissipation.

[0125] For example, such as Figure 2 and Figure 7 As shown, the plane P1 where each protective mesh 33a is located is not coplanar with part or all of the outer surface P of the outer casing 12, and the plane P1 where the protective mesh 33a is located is closer to the motor 10 than the outer surface P of the outer casing 12. That is, the entire bottom surface of the outer casing 12 is not in the same plane. When the integrated transmission machine is applied to well site equipment such as an electric fracturing truck, the bottom of the drive unit 1 needs to be placed on the electric fracturing truck, that is, the bottom surface of the outer casing 12 will be in contact with the electric fracturing truck. By setting the plane P1 where the protective mesh 33a is located to be closer to the motor 10 than the outer surface P of the outer casing 12, it is beneficial for outside air to flow more smoothly from the bottom of the drive unit 1 into the cavity 13 through the air inlet 31a, thereby ensuring that more air is drawn into the cavity 13 during the heat dissipation process.

[0126] Figure 8 This is a schematic diagram of the structure of a speed-integrated machine according to another embodiment of the present disclosure. For example, Figure 8 This is a left view of a transmission integrated machine according to another embodiment of the present disclosure, the viewing angle of which is... Figure 1 The left view of the integrated speed control unit has the same perspective.

[0127] like Figure 8 As shown, at least one embodiment of the present disclosure provides a variable speed integrated machine including a drive unit 1, a drive cooling device 2, an inverter unit 3, and an inverter cooling device 4. The drive cooling device 2 employs an air-cooled cooling mechanism 2B. The air-cooled cooling mechanism 2B includes a third air outlet component 20c, a fourth air outlet component 20d, and an air inlet component 30.

[0128] Figure 8 For details regarding the specific structure and arrangement of the drive unit 1, inverter unit 3, inverter heat dissipation unit 4, and air intake assembly 30, please refer to the description in the previous embodiments, which will not be repeated here.

[0129] Figure 8 and Figure 1 The difference between the integrated speed control and the variable speed control is that... Figure 8 The air-cooled heat dissipation mechanism 2B includes a third air outlet component 20c and a fourth air outlet component 20d. The two components have the same structure but different air outlet directions.

[0130] like Figure 8 As shown, the third air outlet assembly 20c includes a cooling fan 21c, an exhaust duct 22c, and a fan casing 25c. The exhaust duct 22c includes an air outlet 23c and an air outlet cover 24c. The fourth air outlet assembly 20d includes a cooling fan 21d, an exhaust duct 22d, and a fan casing 25d. The exhaust duct 22d includes an air outlet 23d and an air outlet cover 24d. The air outlet direction of the exhaust duct 22c of the third air outlet assembly 20c is different from the air outlet direction of the exhaust duct 22d of the second air outlet assembly 20d; that is, the air outlet 23c and the air outlet 23d have different orientations. For example, as... Figure 8 As indicated by the black arrows at the air outlets 23c and 23d, air outlet 23c faces, for example, to the upper left, and air outlet 23d faces, for example, to the upper right.

[0131] Although the air outlets 23c and 23d have different orientations, since both of them are directed to the top space of the transmission unit, when the transmission unit is applied to well site equipment such as electric fracturing trucks, even if the lateral distance between the two electric fracturing trucks is small, it will not affect the heat dissipation effect of the two electric fracturing trucks.

[0132] like Figure 8 As shown, the cooling fan 21c is disposed on the top surface F1 of the outer casing 10, and the fan volute 25c is located between the cooling fan 21c and the top surface F1. A first side 261 (e.g., the upper side shown in the figure) of the fan volute 25c communicates with the cooling fan 21c, a second side 262 (e.g., the lower side shown in the figure) communicates with the cavity 13 of the outer casing 12, and a third side 263 (e.g., the right side shown in the figure) communicates with the exhaust duct 22c. For example, the first side 261 and the second side 262 are opposite to each other in the y-direction, and the third side 263 is located between the first side 261 and the second side 262 and on the side of the fan volute 25c away from the fan volute 25d. In this embodiment, by connecting the fan volute 25c to the cooling fan 21c, the exhaust duct 22c, and the cavity 13 respectively, it is beneficial for the gas in the cavity 13 to be discharged from the exhaust duct 22c when the cooling fan 21c is working.

[0133] like Figure 8As shown, the cooling fan 21d is disposed on the top surface F1 of the outer casing 10, and the fan volute 25d is located between the cooling fan 21d and the top surface F1. A first side 271 (e.g., the upper side shown in the figure) of the fan volute 25d communicates with the cooling fan 21d, a second side 272 (e.g., the lower side shown in the figure) communicates with the cavity 13 of the outer casing 12, and a third side 273 (e.g., the left side shown in the figure) communicates with the exhaust duct 22d. For example, the first side 271 and the second side 272 are opposite each other in the y-direction, and the third side 273 is located between the first side 271 and the second side 272 and on the side of the fan volute 25d away from the fan volute 25c. In this embodiment, by connecting the fan volute 25d to the cooling fan 21d, the exhaust duct 22d, and the cavity 13 respectively, it is beneficial for the gas in the cavity 13 to be discharged from the exhaust duct 22d when the cooling fan 21d is working.

[0134] In the integrated speed control machine provided in the above embodiments, when utilizing Figure 8 During the cooling process of the drive unit, the air-cooled heat dissipation mechanism 2B shown in the diagram activates cooling fans 21c and 21d. Outside air is drawn into the cavity 13 through the air inlet assembly 30 located at the bottom of the drive unit 1, cooling the motor 10 housed within the cavity 13. Subsequently, the air is exhausted from the exhaust outlets 23c and 23d of the exhaust ducts 22c and 22d by the suction action of cooling fans 21a and 21b, thereby achieving the cooling effect on the motor 10.

[0135] and Figure 1 resemblance, Figure 8 The third air outlet assembly 20c, the fourth air outlet assembly 20d, the reverse air device, and the reverse air cooling device are all located on the same side of the housing 12, for example, on the same top surface F1. By arranging the third air outlet assembly 20c, the fourth air outlet assembly 20d, the inverter, and the reverse air cooling device on the same side of the housing 12, the space occupied by the drive cooling device, the inverter, and the inverter unit on the integrated transmission unit is further saved, thus reducing the overall size of the integrated transmission unit.

[0136] Figure 9 This is a perspective view of a speed-changing integrated machine according to another embodiment of the present disclosure. Figure 10 for Figure 9 A schematic diagram of the integrated speed changer.

[0137] like Figure 9 and Figure 10 As shown, at least one embodiment of the present disclosure provides a variable speed integrated machine including a drive device 1, a drive heat dissipation device 2, an inverter device 3, and an inverter heat dissipation device 4.

[0138] Figure 9The specific structure and arrangement of the drive device 1, inverter device 3, and inverter heat dissipation device 4 can be referred to the description in the previous embodiment, and will not be repeated here.

[0139] Figure 9 and Figure 1 The difference between the integrated speed control and the variable speed control is that... Figure 9 The drive cooling device 2 dissipates heat from the drive device 1 by means of coolant cooling. In this case, the drive cooling device 2 only includes the coolant cooling mechanism 2C. Figure 9 In the variable speed integrated machine, both the inverter heat dissipation device 4 and the drive heat dissipation device 2 adopt the coolant cooling method.

[0140] In at least some embodiments, at least a portion of the coolant heat dissipation mechanism 2C is disposed on the same side of the housing 12 of the drive unit 1 as the reverse airflow device 3. For example, as Figure 9 and Figure 10 As shown, the coolant heat dissipation mechanism 2C includes a first cooling component, a first coolant storage component 202, and a first fan component 203. The first coolant storage component 202, the first fan component 203, the reverse airflow device 3, and the reverse airflow heat dissipation device 4 are disposed on the same side of the housing 12 (e.g., the first side S1 of the housing 12 shown in the figure), for example, on the same top surface F1. By disposing of the first coolant storage component 202, the first fan component 203, the inverter device 3, and the reverse airflow heat dissipation device 4 on the same side of the housing 12, the space occupied by the drive heat dissipation device 2, the inverter device 3, and the inverter heat dissipation device 4 on the integrated transmission is saved, thereby reducing the overall size of the integrated transmission.

[0141] For example, such as Figure 9 As shown, the first coolant storage assembly 202 and the first fan assembly 203 are sequentially disposed on the first side S1 of the housing 12. That is, the first fan assembly 203 is disposed on the side of the first coolant storage assembly 202 away from the housing 12. The first coolant storage assembly 202 includes a motor coolant storage chamber 221 communicating with the first cooling assembly, used to store coolant and supply motor coolant to the first cooling assembly. Here, motor coolant refers to the coolant used to cool the drive device 1.

[0142] For example, such as Figure 10 As shown, the motor coolant storage chamber 221 includes an input terminal 221i and an output terminal 221o. A first cooling assembly is disposed within the housing 12 and includes a first cooling channel 201. The first cooling channel 201 includes a first cooling channel inlet and a first cooling channel outlet. The first cooling channel inlet is connected to the output terminal 221o of the motor coolant storage chamber 221, and the first cooling channel outlet is connected to the input terminal 221i. The first cooling channel 201 is used to supply motor coolant to the motor 10.

[0143] For example, the first cooling channel 201 includes a first cooling pipe 211, a second cooling pipe 212, a third cooling pipe 213, a first connecting sub-pipe 214, and a second connecting sub-pipe 215. Each of the first cooling pipe 211, the second cooling pipe 212, the third cooling pipe 213, the first connecting sub-pipe 214, and the second connecting sub-pipe 215 is configured to deliver motor coolant.

[0144] For example, the first cooling pipe 211 is connected to the output end 221o of the motor coolant storage chamber 221 via the first connecting sub-pipe 214; the second cooling pipe 212 is connected to the input end 221i of the motor coolant storage chamber 221 via the second connecting sub-pipe 215. The third cooling pipe 213 is located between the first cooling pipe 211 and the second cooling pipe 212 and is connected to both the first cooling pipe 211 and the second cooling pipe 212. In this way, the motor coolant in the motor coolant storage chamber 221 can flow back to the motor coolant storage chamber 221 after passing through the first connecting sub-pipe 214, the first cooling pipe 211, the third cooling pipe 213, the second cooling pipe 212, and the second connecting sub-pipe 215 in sequence. During the flow of the motor coolant in the first cooling channel 201, the heat generated by the motor 10 is carried away through heat exchange, thereby cooling the motor 10.

[0145] In at least some embodiments, the number of third cooling pipes 213 can be one or more. When multiple third cooling pipes 213 are set, the cooling effect on the motor 10 can be enhanced.

[0146] Figure 11 This is a schematic cross-sectional view of the stator in a drive device according to an embodiment of the present disclosure. For example, Figure 11 for Figure 9 A schematic diagram of the cross-section of the stator 15 of the motor 10. Figures 9 to 11 In this motor, there are an output shaft 14, a stator 15 and a rotor 16. For details on the specific structure of the output shaft 14, the stator 15 and the rotor 16 and their arrangement in the drive device, please refer to the description of the previous embodiment, which will not be repeated here.

[0147] For example, the motor 10 includes a stator 15, which includes a body portion 151 and a stator winding 152, defining an internal cavity 150. A rotor 16 is disposed within the internal cavity 150 of the stator 15. The body portion 151 has, for example, a cylindrical shape and includes an inner side C1 and an outer side C2 near the rotor 16, which are opposite to each other in the radial direction of the stator 15. The stator winding 152 is disposed on the inner side C1 of the body portion 151, and a plurality of third cooling pipes 213 are disposed on the outer side C2 of the body portion 151.

[0148] For example, multiple third cooling pipes 213 are provided in part or all of the peripheral portion of the outer side C2 of the main body 151. When multiple third cooling pipes 213 are provided in the entire peripheral portion of the outer side C2 of the main body 151, the heat exchange area of ​​the motor coolant can be increased, and the heat dissipation effect can be enhanced.

[0149] For example, multiple third cooling pipes 213 are arranged at equal or unequal intervals throughout the periphery of the main body 151. When multiple third cooling pipes 213 are arranged at equal intervals throughout the periphery of the outer side C2 of the main body 151, the uniformity of heat dissipation can be improved, further ensuring the overall heat dissipation effect.

[0150] For example, such as Figure 9 and Figure 10 As shown, the first fan assembly 203 is disposed above the first coolant storage assembly 202 to dissipate heat from the motor coolant in the motor coolant storage chamber 221. The number of first fan assemblies 203 can be one or more. Those skilled in the art can determine the specific number of first fan assemblies 203 based on the area of ​​the first coolant storage assembly 202; this embodiment does not limit the number of first fan assemblies.

[0151] For example, the first fan assembly 203 includes a first cooling fan 204 and a first cooling motor 205. The first cooling motor 205 is located on the side of the motor coolant storage chamber 221 away from the outer casing 12, and the first cooling fan 204 is located between the first cooling motor 205 and the motor coolant storage chamber 221. When the first cooling motor 205 is working, it drives the impeller of the first cooling fan 204 to rotate, and the air generated by the rotation of the impeller cools the motor coolant in the motor coolant storage assembly 202 (e.g., the motor coolant storage chamber 221) by cooling.

[0152] In the integrated speed control unit provided in the above embodiment, during the cooling process of the drive device 1 using the air-cooled heat dissipation mechanism 2C, the motor coolant flows from the motor coolant storage chamber 221 through the first connecting sub-pipe 214 into the first cooling pipe 211, the third cooling pipe 213, and the second cooling pipe 212. During the flow, the motor coolant carries away the heat generated by the motor 10 through heat exchange, thereby achieving cooling of the motor 10. After the motor coolant has exchanged heat with the motor 10, the heated motor coolant flows back to the motor coolant storage chamber 221 through the second connecting sub-pipe 215. Since the motor coolant is recyclable, it not only reduces production costs but also reduces wastewater discharge and avoids environmental pollution.

[0153] In at least some embodiments, since the drive unit 1 uses a coolant cooling method, compared to air cooling, the housing 12 does not need to have an opening for connecting to the exhaust pipe. Therefore, the housing 12 is essentially closed, isolating the internal and external connections of the housing. This reduces the likelihood of the motor 10 exploding in the event of an explosion outside the drive unit 1, thus achieving explosion-proof functionality for the motor. Because the inverter 3 also uses a coolant cooling method, it also achieves explosion-proof functionality, further improving the overall explosion-proof effect of the inverter integrated machine.

[0154] Figure 12 This is a perspective structural diagram of a speed-changing integrated machine according to another embodiment of the present disclosure. Figure 13 for Figure 12 A schematic diagram of the integrated speed changer.

[0155] like Figure 12 and Figure 13 As shown, at least one embodiment of the present disclosure provides a variable speed integrated machine including a drive unit 1, a drive cooling device, an inverter unit 3, and an inverter cooling device. Both the inverter cooling device and the drive cooling device employ coolant cooling.

[0156] Figure 12 and Figure 9 The difference between the integrated speed control and the variable speed control is that... Figure 12 The inverter cooling device and the drive cooling device share the first coolant storage component and the first fan component.

[0157] For example, such as Figure 12 and Figure 13 As shown, the drive unit 1 includes a motor 10 and a housing 12 for accommodating the motor 10. An inverter 3 is disposed on a first side S1 of the housing, for example, on the top surface F1, and the inverter 3 is electrically connected to the motor 10. For details regarding the specific structure of the motor 10 and the housing 12, please refer to the description of the previous embodiments; further details will not be repeated here.

[0158] For example, inverter 3 can cover part or all of the top surface F1. When inverter 3 covers the entire top surface F1, the heat dissipation area of ​​the inverter heat dissipation device can be increased, thereby improving heat dissipation efficiency. When inverter 3 covers part of the top surface F1, it is advantageous to install additional devices on the casing, such as adding an air-cooled heat dissipation mechanism (e.g., as shown below). Figure 22 (Example shown).

[0159] For example, the inverter cooling device includes an inverter cooling plate 441 (also called a water-cooled plate) disposed on the side of the inverter device 3 away from the housing 10. For example, the inverter cooling plate 441 includes an inverter cooling channel 451. For details on the specific structure of the inverter cooling plate 441 and the inverter cooling channel 451, please refer to the description of the inverter cooling plate 41 and the inverter cooling channel 51 in the previous embodiments, which will not be repeated here.

[0160] For example, such as Figure 13 As shown, the drive cooling device includes a first cooling channel 401, a common first coolant storage assembly C202, and a common first fan assembly C203. At least a portion of the first cooling channel 401 is disposed within the cavity 13 defined by the housing 12. For example, the first cooling channel 401 includes a first cooling pipe 411, a second cooling pipe 412, and a third cooling pipe 413, wherein there are one or more third cooling pipes 413. For example, multiple third cooling pipes 413 are disposed in the stator 15 of the motor 10. For details regarding the specific structure and arrangement of the third cooling pipe 413, please refer to the previous description of the third cooling pipe 213, which will not be repeated here.

[0161] For example, a shared first coolant storage assembly C202 is disposed on the side of the inverter cooling plate 441 away from the housing 12. The shared first coolant storage assembly C202 includes a shared first coolant storage chamber C221, which stores coolant and supplies coolant to the first cooling channel 401 and the inverter cooling plate 441.

[0162] For example, the shared first coolant storage chamber C221 includes an input terminal C221i and an output terminal C221o. One end of the first cooling channel 401 is connected to the output terminal C221o of the shared first coolant storage chamber C221, and the other end is connected to the input terminal C221i. The coolant flowing out from the output terminal C221o of the shared first coolant storage chamber C221 passes sequentially through the first cooling pipe 411, the third cooling pipe 413, and the second cooling pipe 412, and finally flows back to the shared first coolant storage chamber C221 through the input terminal C221i.

[0163] For example, one end of the inverter cooling channel 451 is connected to the output terminal C221o of the common first coolant storage chamber C221, and the other end is connected to the input terminal C221i. The coolant flowing out from the output terminal C221o of the common first coolant storage chamber C221 cools the inverter device 3 as it passes through the inverter cooling channel 451, and finally flows back to the common first coolant storage chamber C221 through the input terminal C221i.

[0164] It should be noted that the flow direction of the coolant shown in all the accompanying drawings of this disclosure is only illustrative. In actual production, the flow direction may be opposite, and the embodiments of this disclosure do not limit this.

[0165] For example, a shared first fan assembly C203 is disposed on the side of the shared first coolant storage assembly C202 away from the housing 12. The shared first fan assembly C203 includes a shared first cooling fan C204 and a shared first cooling motor 205.

[0166] For example, a common first cooling motor C205 is located on the side of the common first coolant storage chamber C221 away from the outer casing 12, and a common first cooling fan C204 is located between the common first cooling motor C205 and the common first coolant storage chamber C221. When the common first cooling motor C205 is working, it can drive the impeller of the common first cooling fan C204 to rotate, and use the air generated by the rotation of the impeller to cool down the coolant in the common first coolant storage chamber C221.

[0167] Figure 12 Only four shared first fan assemblies C203 are shown. It is understood that the number of shared first fan assemblies C203 can be one or more. Those skilled in the art can determine the specific number of shared first fan assemblies C203 based on the area of ​​the shared first coolant storage chamber C221. This disclosure does not limit this.

[0168] In the integrated speed control unit provided in the above embodiments, the inverter 3, inverter cooling plate 441, common first coolant storage component C202, and common first fan component C203 are all arranged on the same side of the outer casing 12. This arrangement saves space occupied by the drive cooling device, inverter, and inverter cooling device on the integrated speed control unit, thus reducing the overall size of the integrated speed control unit.

[0169] In the integrated speed changer provided in the above embodiments, by setting a shared first coolant storage component C202 and a shared first fan component C203, the volume of the drive heat dissipation device and the inverter heat dissipation device can be reduced, making the two heat dissipation devices more compact in structure, and improving the overall explosion-proof function of the integrated speed changer.

[0170] In at least some embodiments, the first cooling channel 401 disposed in the motor 10 and the inverter cooling channel 415 disposed in the inverter cooling plate 441 can be connected in parallel or in series. Those skilled in the art can determine this according to actual needs. The two connection methods are described below with reference to specific examples.

[0171] Figures 14 to 19 A schematic diagram illustrating an example connection of a first cooling channel and an inverter cooling channel connected in parallel.

[0172] like Figures 14 to 19As shown, the first cooling channel 401 includes a first cooling channel inlet 401i and a first cooling channel outlet 401o. The first cooling channel inlet 401i is connected to the output terminal C221o of the shared first coolant storage chamber C221, and the first cooling channel outlet 401o is connected to the input terminal C221i.

[0173] Coolant flows out from the output terminal C221o of the common first coolant storage chamber C221 and enters the first cooling channel 401. As it passes through the motor 10, it cools the motor 10. Finally, it flows back to the common first coolant storage chamber C221 via the input terminal C221i.

[0174] like Figures 14 to 19 As shown, the inverter cooling channel 451 includes an inverter cooling channel inlet 451i and an inverter cooling channel outlet 451o. The inverter cooling channel inlet 451i is connected to the output terminal C221o of the common first coolant storage chamber C221, and the inverter cooling channel outlet 451o is connected to the input terminal C221i. Coolant flows out from the output terminal C221o of the common first coolant storage chamber C221 and enters the inverter cooling channel 451. As it passes through the inverter cooling plate 441, it cools the inverter device 3. Finally, it flows back to the common first coolant storage chamber C221 via the input terminal C221i.

[0175] like Figures 14 to 19 As shown, the shared first fan assembly uses the air generated by the rotation of the impeller to cool the coolant flowing back to the shared first coolant storage chamber C221 (as shown by the arrow in the "air path" in the figure).

[0176] In the integrated speed control unit provided in the above embodiments, by setting the first cooling channel 401 and the inverter cooling channel 451 to be connected in parallel, when one of the cooling channels is damaged, it will not affect the normal operation of the other cooling channel, and it is also convenient for maintenance or replacement.

[0177] In at least some embodiments, in order to improve the flow of coolant in the inverter cooling channel and the first cooling channel and enhance the effect of circulation and recirculation, one or more water pumps may be installed on the first cooling channel 401 and the inverter cooling channel 451.

[0178] like Figure 14As shown, for example, a first water pump G1 and a second water pump G2 are respectively installed on the first cooling channel 401 and the inverter cooling channel 451. The first water pump G1 is located on the portion of the first cooling channel 401 between the input end C221i and the motor 10 and is upstream of the motor 10 to improve the flow of coolant in the first cooling channel. The second water pump G2 is located on the portion of the inverter cooling channel 451 between the output end C221o and the inverter cooling plate 441 and is upstream of the inverter cooling plate 441 to improve the flow of coolant in the inverter cooling channel 451.

[0179] like Figure 15 As shown, for example, a first water pump G1 and a second water pump G2 are respectively installed on the first cooling channel 401 and the inverter cooling channel 451. The first water pump G1 is located on the portion of the first cooling channel 401 between the input end C221i and the motor 10 and is upstream of the motor 10 to improve the flow of coolant in the first cooling channel. The second water pump G2 is located on the portion of the inverter cooling channel 451 between the output end C221o and the inverter cooling plate 441 and is downstream of the inverter cooling plate 441 to improve the flow of coolant in the inverter cooling channel 451.

[0180] like Figure 16 As shown, for example, a first water pump G1 and a second water pump G2 are respectively installed on the first cooling channel 401 and the inverter cooling channel 451. The first water pump G1 is located on the portion of the first cooling channel 401 between the input end C221i and the motor 10 and is downstream of the motor 10 to improve the flow of coolant in the first cooling channel. The second water pump G2 is located on the portion of the inverter cooling channel 451 between the output end C221o and the inverter cooling plate 441 and is upstream of the inverter cooling plate 441 to improve the flow of coolant in the inverter cooling channel 451.

[0181] like Figure 17 As shown, for example, a first water pump G1 and a second water pump G2 are respectively installed on the first cooling channel 401 and the inverter cooling channel 451. The first water pump G1 is located on the portion of the first cooling channel 401 between the input end C221i and the motor 10 and is downstream of the motor 10 to improve the flow of coolant in the first cooling channel. The second water pump G2 is located on the portion of the inverter cooling channel 451 between the output end C221o and the inverter cooling plate 441 and is downstream of the inverter cooling plate 441 to improve the flow of coolant in the inverter cooling channel 451.

[0182] like Figure 18As shown, for example, only one first water pump G1 is provided on the first cooling channel 401 and the inverter cooling channel 451. The first water pump G1 is located on the portion of the first cooling channel 401 between the input end C221i and the motor 10 and is downstream of the motor 10 to improve the flow of coolant in the first cooling channel. At the same time, the first water pump G1 is also located on the portion of the inverter cooling channel 451 between the input end C221i and the inverter cooling plate 441 and is downstream of the inverter cooling plate 441 to improve the flow of coolant in the inverter cooling channel 451.

[0183] like Figure 19 As shown, for example, only one first water pump G1 is installed on the first cooling channel 401 and the inverter cooling channel 451. The first water pump G1 is located on the portion of the first cooling channel 401 between the output end C221o and the motor 10, and is upstream of the motor 10, to improve the flow of coolant in the first cooling channel. At the same time, the first water pump G1 is also located on the portion of the inverter cooling channel 451 between the output end C221o and the inverter cooling plate 441, and is upstream of the inverter cooling plate 441, to improve the flow of coolant in the inverter cooling channel 451.

[0184] Compared to Figures 14 to 17 In the case where two water pumps are used, Figure 18 , 19 Using a single water pump can reduce the number of pumps needed and lower manufacturing costs.

[0185] Figure 20 and Figure 21 A schematic diagram illustrating an example connection of a first cooling channel and an inverter cooling channel connected in series.

[0186] like Figure 20 and Figure 21 As shown, the first cooling channel 401 includes a first cooling channel inlet 401i and a first cooling channel outlet 401o. The inverter cooling channel 451 includes an inverter cooling channel inlet 451i and an inverter cooling channel outlet 451o. The inverter cooling channel inlet 451i is connected to the output terminal C221o of the shared first coolant storage chamber C221, the inverter cooling channel outlet 451o is connected to the first cooling channel inlet 401i, and the first cooling channel outlet 401o is connected to the input terminal C221i.

[0187] When the coolant flows out from the output terminal C221o of the common first coolant storage chamber C221, it first enters the inverter cooling plate 441 through the inverter cooling channel 451 to cool the inverter device 3; then, it enters the motor 10 through the first cooling channel 401 to cool the motor 10. Finally, it flows back to the common first coolant storage chamber C221 through the input terminal C221i.

[0188] like Figure 20 and Figure 21 As shown, the shared first fan assembly uses the air generated by the rotation of the impeller to cool the coolant flowing back to the shared first coolant storage chamber (as indicated by the arrow in the "air path" shown in the figure).

[0189] exist Figure 20 and Figure 21 In this embodiment, the coolant first enters the inverter cooling channel 451 and then the first cooling channel 401. It is understood that in other embodiments, the order of the two can be interchanged. That is, the coolant can first enter the first cooling channel 401 and then the inverter cooling channel 451.

[0190] In actual production, the order in which the coolant flows can be determined based on the amount of heat generated by the heat-generating components. For example, components that generate less heat can be introduced into the coolant first. If components that generate more heat are introduced first, the coolant flowing out will be at a higher temperature, potentially failing to cool the components that generate less heat, thus affecting the heat dissipation effect. For instance, if the heat generated by the motor is greater than that generated by the inverter, the coolant can enter the inverter cooling channel 451 first, and then the first cooling channel 401, thereby avoiding the coolant temperature being too high initially and affecting the heat dissipation effect on subsequent components.

[0191] Figure 22 This is a perspective view of a speed-changing integrated machine according to yet another embodiment of the present disclosure. Figure 22 As shown, at least one embodiment of the present disclosure provides a variable speed integrated machine including a drive device 1, a drive heat dissipation device 2, an inverter device 3, and an inverter heat dissipation device 4.

[0192] Figure 1 and Figure 22 The difference between the integrated speed control and the variable speed control is that... Figure 22 The drive cooling device 2 cools the drive device 1 using both air cooling and coolant cooling. In this case, the drive cooling device 2 includes an air cooling mechanism and a coolant cooling mechanism.

[0193] For example, the drive unit 1 includes a motor 10 and a housing 12 for accommodating the motor 10. An inverter 3 is disposed on a first side S1 of the housing, such as the top surface F1, and is electrically connected to the motor 10. Specific structures of the motor 10 and the housing 12 can be found in the description of the preceding embodiments, and will not be repeated here.

[0194] For example, the inverter cooling device 4 is located on the side of the inverter 3 away from the outer casing 12. The inverter cooling device 4 includes an inverter cooling plate 541 (also called a water-cooled plate), an inverter coolant storage assembly 542, and an inverter fan assembly 543. The inverter fan assembly 543 includes a cooling fan 545 and a cooling motor 547. For the specific structure and arrangement of the inverter 3, inverter cooling plate 541, inverter coolant storage assembly 542, inverter fan assembly 543, cooling fan 545, and cooling motor 547, please refer to the previous descriptions of the inverter 3, inverter cooling plate 41, inverter coolant storage assembly 42, inverter fan assembly 43, cooling fan 45, and cooling motor 47, which will not be repeated here.

[0195] For example, the air-cooled heat dissipation mechanism includes an air outlet assembly 520 and an air inlet assembly 530. For example, the air outlet assembly 520 communicates with the cavity 13 and is disposed on the first side S1 of the outer casing 12. The air outlet assembly 520 includes a cooling fan 521, an exhaust duct 522, and a fan casing 525, wherein the exhaust duct 522 includes an air outlet 523 and an air outlet cover 524. The air inlet assembly 530 is disposed, for example, on the second side S2 of the outer casing 12. For details regarding the specific structure and arrangement of the air outlet assembly 520 and the air inlet assembly 530, please refer to the previous section. Figure 1 The relevant descriptions of the air outlet assembly 20 and the air inlet assembly 30 are not repeated here.

[0196] It should be noted that, in order to leave space for the coolant cooling mechanism, Figure 22 The air-cooled heat dissipation mechanism uses only one exhaust component 520 to reduce its area occupied on the top surface F1 of the housing 12. It is understood that the exhaust direction of this exhaust component 520 is not limited to the direction shown in the figure.

[0197] For example, the coolant heat dissipation mechanism includes a first cooling component (not shown), a first coolant storage component 502, and a first fan component 503. For details regarding the specific structure and arrangement of the first cooling component, the first coolant storage component 502, and the first fan component 503, please refer to the preceding text. Figure 9 The relevant descriptions of the first cooling component, the first coolant storage component 202, and the first fan component 203 are not repeated here.

[0198] It should be noted that, compared to Figure 9 First coolant storage assembly 202, Figure 22 The first coolant storage component 502 occupies a small space on the top surface F1 of the housing 12, which is beneficial for the simultaneous installation of the air outlet component 520 on the top surface F1.

[0199] In at least some embodiments, at least a portion of the air-cooled heat dissipation mechanism, at least a portion of the coolant heat dissipation mechanism, and the inverter are all disposed on the same side of the housing. For example, as Figure 22 As shown, the air outlet assembly 520, the first coolant storage assembly 502, the first fan assembly 503, and the reverse air device 3 are all disposed on the same side of the housing 12 (e.g., the first side S1 of the housing 12 shown in the figure). By disposing of the air outlet assembly 520, the first coolant storage assembly 502, the first fan assembly 503, and the reverse air device 3 on the same side of the housing 12, the space occupied by the drive cooling device, the inverter device 3, and the inverter cooling device 4 on the integrated transmission is saved, thereby reducing the overall size of the integrated transmission.

[0200] In the integrated speed reducer provided in the above embodiments, the motor 10 is cooled simultaneously using both air cooling and coolant cooling, thus enhancing the heat dissipation effect. This is especially beneficial for high-power devices like motors, which generate significant heat during operation; enhancing the heat dissipation effect further ensures the normal operation of the integrated speed reducer.

[0201] For example, Figure 22 The motor 10 includes an output shaft, a stator, and a rotor, with the output shaft extending from the housing 12. For details regarding the specific structure of the output shaft, stator, and rotor, and their arrangement in the drive unit, please refer to the description of the preceding embodiments; further details will not be repeated here.

[0202] For example, when both air cooling and coolant cooling are used to cool the motor 10, air cooling can be used for the rotor and coolant cooling can be used for the stator.

[0203] For example, Figure 22 When the cooling fan 521 is turned on, outside air can be drawn into the cavity 13 through the air inlet assembly 30 on the bottom surface F2 of the outer casing 12. The air drawn into the cavity 13 can pass through the internal cavity 150 of the stator 15 (see...). Figure 11 This achieves the cooling effect on the motor 10. Then, through the suction action of the cooling fan 521, the air is discharged from the exhaust duct 522.

[0204] For example, Figure 22 The first cooling component may include, for example Figure 10 and Figure 11 The first cooling channel 201 is provided in the stator, and at least a portion of the first cooling channel 201 is arranged in a direction parallel to the output shaft. In this way, when coolant is introduced into the first cooling channel, the coolant flows through the stator body, thereby achieving a heat dissipation effect on the stator.

[0205] In at least some embodiments, when both air cooling and coolant cooling are used to cool the motor 10, the inverter cooling device 4 and the drive cooling device 3 can share the first coolant storage component 502 and the first fan component 503. For details regarding the specific structure and arrangement of the first coolant storage component 502, the first fan component 503, the inverter 3, and the inverter cooling device 4 in the shared state, please refer to the previous sections. Figures 12 to 13 The relevant descriptions in the document will not be repeated here.

[0206] Furthermore, when the first coolant storage assembly 502 and the first fan assembly 503 are shared, the first cooling channel in the motor 10 and the inverter cooling channel in the inverter cooling plate can be connected in parallel or in series. Those skilled in the art can determine this according to actual needs. The two connection methods will be described below with specific examples.

[0207] Figures 23 to 24 This schematic diagram illustrates an example of a first cooling channel and an inverter cooling channel connected in parallel when both air cooling and coolant cooling are used to cool the motor.

[0208] like Figure 23 and 24 As shown, when the first coolant storage assembly and the first fan assembly are shared, it is possible to Figure 22 The motor 10 is provided with a first cooling channel 501, and in Figure 22 An inverter cooling channel 551 is provided in the inverter cooling plate 541. For the specific structure and arrangement of the first cooling channel 501 and the inverter cooling channel 541, please refer to the previous description of the first cooling channel 401 and the inverter cooling channel 541, which will not be repeated here.

[0209] For example, the shared first coolant storage assembly includes a shared first coolant storage chamber, denoted by C521. For details on the specific structure of the shared first coolant storage chamber C521 and the shared first fan assembly, please refer to the previous descriptions of the shared first coolant storage chamber C221 and the shared first fan assembly C203, which will not be repeated here.

[0210] like Figure 23 and 24As shown, the first cooling channel 501 includes a first cooling channel inlet 501i and a first cooling channel outlet 501o. The first cooling channel inlet 501i is connected to the output end C521o of the common first coolant storage chamber C521, and the first cooling channel outlet 501o is connected to the input end C521i. Coolant flows out from the output end C521o of the common first coolant storage chamber C521 and enters the first cooling channel 501. When passing through the stator 15 of the motor 10, the stator 15 of the motor 10 is cooled down. Finally, it flows back to the common first coolant storage chamber C521 via the input end C521i.

[0211] like Figure 23 and 24 As shown, the inverter cooling channel 551 includes an inverter cooling channel inlet 551i and an inverter cooling channel outlet 551o. The inverter cooling channel inlet 551i is connected to the output terminal C521o of the common first coolant storage chamber C521, and the inverter cooling channel outlet 551o is connected to the input terminal C521i. Coolant flows out from the output terminal C521o of the common first coolant storage chamber C521 and enters the inverter cooling channel 551. As it passes through the inverter cooling plate 541, it cools the inverter device 3. Finally, it flows back to the common first coolant storage chamber C521 via the input terminal C521i.

[0212] like Figure 23 and 24 As shown, the shared first fan assembly uses the air generated by the rotation of the impeller to cool the coolant flowing back to the shared first coolant storage chamber C521 (as shown by the "air path" arrow passing through C521 in the figure). At the same time, due to the suction effect of the cooling fan 521 in the air outlet assembly 520, outside air can be drawn into the motor 10 and flow out through the exhaust duct 522 after passing through the rotor 16, thereby achieving cooling of the rotor 16 of the motor 10 (as shown by the "air path" arrow passing through the rotor 16 in the figure).

[0213] In at least some embodiments, in order to improve the flow of coolant in the inverter cooling channel and the first cooling channel and enhance the effect of circulation and recirculation, one or more water pumps may be installed on the first cooling channel 501 and the inverter cooling channel 551.

[0214] For example, such as Figure 23As shown, a first water pump G1 and a second water pump G2 are respectively installed on the first cooling channel 501 and the inverter cooling channel 551. The first water pump G1 is located on the portion of the first cooling channel 501 between the input end C521i and the motor 10, and is upstream of the motor 10, to improve the flow of coolant in the first cooling channel. The second water pump G2 is located on the portion of the inverter cooling channel 551 between the output end C521o and the inverter cooling plate 541, and is upstream of the inverter cooling plate 541, to improve the flow of coolant in the inverter cooling channel 551.

[0215] For example, the first water pump G1 can also be set in Figure 23 The location marked with the dashed box indicating G1 can be used to position the second water pump G2. Figure 23 The area marked with the dashed box indicating "G2" is shown. Please refer to the reference for the exact location. Figures 15 to 17 The relevant descriptions in the document will not be repeated here.

[0216] For example, such as Figure 24 As shown, only one first water pump G1 is installed on the first cooling channel 501 and the inverter cooling channel 551. The first water pump G1 is located on the portion of the first cooling channel 501 between the input end C521i and the motor 10, and downstream of the motor 10, to improve the flow of coolant in the first cooling channel. Simultaneously, the first water pump G1 is also located on the portion of the inverter cooling channel 551 between the input end C521i and the inverter cooling plate 541, and downstream of the inverter cooling plate 541, to improve the flow of coolant in the inverter cooling channel 551. Compared to using two water pumps, using one water pump reduces the number of pumps required and lowers manufacturing costs.

[0217] For example, the first water pump G1 can also be set in Figure 24 The area marked with a dashed box indicates the winning designation (G1). Please refer to the reference area for the exact location. Figure 19 The relevant descriptions in the document will not be repeated here.

[0218] Figure 25 This schematic diagram illustrates an example of a connection block diagram of a first cooling channel and an inverter cooling channel connected in series when both air cooling and coolant cooling are used to cool the motor.

[0219] like Figure 25 As shown, the first cooling channel 501 includes a first cooling channel inlet 501i and a first cooling channel outlet 501o. The inverter cooling channel 551 includes an inverter cooling channel inlet 551i and an inverter cooling channel outlet 551o. The inverter cooling channel inlet 551i is connected to the output terminal C521o of the shared first coolant storage chamber C521, the inverter cooling channel outlet 551o is connected to the first cooling channel inlet 501i, and the first cooling channel outlet 501o is connected to the input terminal C521i.

[0220] When the coolant flows out from the output terminal C521o of the common first coolant storage chamber C521, it first enters the inverter cooling plate 541 through the inverter cooling channel 551 to cool the inverter device 3; then, it enters the stator 15 of the motor 10 through the first cooling channel 501 to cool the stator 15 of the motor 10. Finally, it flows back to the common first coolant storage chamber C521 through the input terminal C521i.

[0221] exist Figure 25 In the example, the coolant first enters the inverter cooling channel 551 and then the first cooling channel 501. It is understood that in other embodiments, the order of these two processes can be interchanged. That is, the coolant can enter the first cooling channel 501 first and then the inverter cooling channel 551. In actual production, the specific order of these two processes can be determined according to the amount of heat generated by the heat-generating components, as detailed in the preceding description.

[0222] For example, the first water pump G1 can also be set in Figure 25 The area marked with a dashed box indicates the winning designation (G1). Please refer to the reference area for the exact location. Figure 20 The relevant descriptions in the document will not be repeated here.

[0223] At least one embodiment of this disclosure also provides a well site device, including the speed-changing integrated machine of any of the preceding embodiments, wherein the well site device includes at least one of an electric fracturing device and an electric cementing device.

[0224] Figure 26 This is a schematic diagram of the structure of an electrically driven fracturing device provided according to an embodiment of this disclosure. Figure 26 As shown, for example, at least one embodiment of this disclosure provides an electrically driven fracturing device that is an electrically driven fracturing semi-trailer. This electrically driven fracturing semi-trailer includes: a semi-trailer body 91, a radiator 92, a transmission unit 93, a plunger pump 94, a junction box 95, a local control box 96, a transmission device 97, a high-pressure system 98, and a low-pressure system 99. The transmission unit 93 is connected to the plunger pump 94 via the transmission device 97, and the radiator 92 cools the lubricating oil of the plunger pump 94.

[0225] In the electric fracturing equipment provided in the above embodiments, by using the integrated speed changer 93 described in any of the preceding embodiments on the electric fracturing semi-trailer, not only is the heat dissipation function of the motor and inverter device realized, but the structure of the integrated speed changer 93 is also made more compact, reducing the space occupied by the integrated speed changer 93 on the semi-trailer, reducing the vehicle weight, reducing the vehicle's form factor cost, making it more flexible in actual use and convenient for transportation.

[0226] In the electrically driven fracturing equipment provided in the above embodiments, by integrating the motor and inverter together, the electrically driven fracturing semi-trailer only needs one set of power cable and auxiliary cable to connect to the power supply equipment to reach the working state, making wiring simpler and faster. For example, the power supplied by the power supply equipment can be from high-voltage electricity rectified by a rectifier transformer, or it can be from power directly rectified by a generator.

[0227] For example, the transmission device 97 can employ at least one or more of a drive shaft, a coupling, and a clutch. For instance, the transmission device 97 can be directly connected to the piston pump 94, or it can be connected to the piston pump via a gearbox to achieve a higher torque input, resulting in increased input torque and higher output discharge pressure for the piston pump. The gearbox includes, but is not limited to, reduction gearboxes, transmissions, and transfer cases.

[0228] Depending on the application environment, gearboxes can be integrated with other equipment or installed independently. For example, when used in electrically driven fracturing equipment, the gearbox can be integrated into the plunger pump. When used in electrically driven cementing equipment, multi-stage gearboxes, such as two-stage gearboxes, can be installed in the transmission and plunger pump to increase torque through multi-stage transmission and speed reduction.

[0229] For example, the shaft of the coupling may or may not coincide with the shaft of the piston pump. When the shafts do not coincide, a flexible or elastic coupling can be used.

[0230] For example, the plunger pump 94 is a five-cylinder plunger pump with a power output of over 5000hp. This ensures high power output for a single vehicle and increases power density per unit area, thus providing a prerequisite for reducing the overall footprint of the well site.

[0231] For example, the power of the speed control unit 93 is over 3000KW. The power of the speed control unit 93 is matched with the power of the plunger pump 94, so that the speed control unit 93 can drive the plunger pump 94 normally.

[0232] For example, the junction box 95 is connected to the integrated transmission 93. The junction box 95 can be located on the side or rear of the vehicle. The junction box 95 can be a cable connector connected by bolts or a quick connector. In this embodiment, the electric fracturing semi-trailer only needs one set of power cable and auxiliary cable connected to the power supply equipment to reach the working state, making wiring simpler and installation faster.

[0233] The integrated speed reducer and its well site equipment provided in this disclosure utilize an inverter cooling device to dissipate heat from the inverter and a drive cooling device to dissipate heat from the drive, effectively ensuring continuous operation of the drive and inverter devices at normal temperatures in the well site. By placing at least a portion of the drive cooling device and the inverter device on the same side of the housing, the space occupied by the drive cooling device and the inverter device on the integrated speed reducer is saved, reducing the overall size of the integrated speed reducer. When the integrated speed reducer with a smaller overall size is applied to the well site equipment, the space it occupies on the well site equipment is also reduced due to the reduced overall size of the integrated speed reducer, thus providing more space for installing other devices on the well site equipment. When at least a portion of the drive cooling device and the inverter device are both placed on the top surface of the housing, since only the top space of the well site equipment is occupied, the side space is not affected. Even if the lateral distance between two well site equipment is small, it does not affect the heat dissipation effect of the two well site equipment.

[0234] The following points should be noted in this article:

[0235] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0236] (2) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0237] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A variable speed integrated machine, comprising: A drive unit includes a motor and a housing for housing the motor, the housing including a top surface; An inverter is mounted on the housing and electrically connected to the motor; An inverter heat dissipation device is disposed on the side of the inverter away from the housing and configured to dissipate heat from the inverter by means of coolant. The drive cooling device is at least partially disposed on the housing and configured to dissipate heat from the drive device by means of coolant cooling and air cooling, or by means of air cooling. At least a portion of the drive heat dissipation device and the inverter device are disposed on the same side of the housing. The inverter is located between the housing and the inverter heat dissipation device. The drive device includes a first end and a second end opposite to each other in a first direction, the first end being the shaft extension end of the drive device and the second end being the non-shaft extension end of the drive device; the drive heat dissipation device includes a wind-cooling heat dissipation mechanism, the housing defines a cavity for accommodating the motor, and the wind-cooling heat dissipation mechanism includes an air outlet assembly communicating with the cavity; The inverter and the inverter heat dissipation device are disposed on the top surface of the housing near the first end, and the air outlet assembly is disposed on the top surface of the housing near the second end.

2. The variable speed integrated machine according to claim 1, wherein the air outlet assembly and the inverter are disposed on the same side of the housing.

3. The variable speed integrated machine according to claim 2, wherein the air-cooling heat dissipation mechanism includes at least two air outlet components, and the air outlet directions of the at least two air outlet components are the same or different from each other.

4. The integrated speed control unit according to claim 2, wherein the air outlet assembly comprises: A cooling fan is mounted on the outer casing. A fan volute is disposed between the cooling fan and the outer casing; and Exhaust duct; The first side of the fan casing is connected to the cooling fan, the second side of the fan casing is connected to the cavity, the third side of the fan casing is connected to the exhaust duct, and the motor includes an output shaft, with the first side and the second side facing each other in a direction perpendicular to the output shaft. The cooling fan is configured to draw gas from the cavity into the fan casing and discharge the gas through the exhaust duct.

5. The integrated speed control unit according to claim 4, wherein the exhaust duct comprises: An air outlet, the air outlet facing away from the outer casing; and An air outlet cover, which is rotatably connected to the air outlet and configured to cover the air outlet.

6. The integrated speed control machine according to claim 2, wherein: The motor includes an output shaft extending from the housing. The housing includes a first side and a second side opposite to each other in a direction perpendicular to the output shaft. The air outlet assembly and the inverter are disposed on the first side of the housing. The air-cooled heat dissipation mechanism also includes: An air inlet assembly includes an air inlet disposed on a second side of the housing, the air inlet being configured to communicate with the cavity so that gas entering the cavity from the air inlet passes through the motor and is then discharged from the air outlet assembly.

7. The integrated speed control unit according to claim 6, wherein the air intake assembly further comprises: A groove is provided on the second side of the outer casing, and the air inlet is provided in the groove; and A protective netting is provided to cover the air inlet. The plane containing the protective mesh is not coplanar with the outer surface of the second side of the housing, and the plane containing the protective mesh is closer to the motor than the outer surface of the second side of the housing.

8. The integrated speed control machine according to claim 1, wherein the drive cooling device further comprises: Coolant heat dissipation mechanism, the coolant heat dissipation mechanism comprising: A first cooling assembly is disposed within a cavity defined by the housing to accommodate the motor; The first fan assembly is mounted on the housing; and A first coolant storage assembly is disposed between the first fan assembly and the housing. The first coolant storage assembly is connected to the first cooling assembly and configured to supply coolant to the first cooling assembly. The first fan assembly is configured to dissipate heat from the coolant in the first coolant storage assembly. The first coolant storage component, the first fan component, and the inverter are all located on the same side of the housing.

9. The integrated speed control machine according to claim 8, wherein: The inverter heat dissipation device and the drive heat dissipation device share the first coolant storage component and the first fan component; The inverter cooling device includes an inverter cooling plate disposed on the side of the inverter device away from the housing, a common first fan assembly disposed on the side of the inverter cooling plate away from the housing, and a common first coolant storage assembly disposed between the common first fan assembly and the inverter cooling plate.

10. The integrated speed control machine according to claim 9, wherein: The motor includes an output shaft extending from the housing, the housing including a first side and a second side opposite to each other in a direction perpendicular to the output shaft; The shared first coolant storage assembly, the shared first fan assembly, the inverter and the inverter cooling plate are all disposed on the first side of the housing, and the inverter covers part or all of the outer surface of the first side of the housing.

11. The integrated speed control machine according to claim 9, wherein: The inverter heat dissipation device includes: An inverter cooling channel is disposed in the inverter cooling plate and includes an inverter cooling channel inlet and an inverter cooling channel outlet; The first cooling component includes: A first cooling channel, at least a portion of which is disposed in the motor, and the first cooling channel includes a first cooling channel inlet and a first cooling channel outlet; The first coolant storage assembly includes: Coolant storage chamber, the coolant storage chamber comprising: The coolant is output to the inverter cooling channel and the first cooling channel at the output end; The input terminal receives the coolant flowing back from the inverter cooling channel and the first cooling channel; The inverter cooling channel inlet and the first cooling channel inlet are respectively connected to the output terminal, and the inverter cooling channel outlet and the first cooling channel outlet are respectively connected to the input terminal.

12. The integrated speed control machine according to claim 9, wherein: The inverter heat dissipation device includes: An inverter cooling channel is disposed in the inverter cooling plate and includes an inverter cooling channel inlet and an inverter cooling channel outlet; The first cooling component includes: A first cooling channel, at least a portion of which is disposed in the motor, and the first cooling channel includes a first cooling channel inlet and a first cooling channel outlet; The first coolant storage assembly includes: Coolant storage chamber, the coolant storage chamber comprising: The coolant is output to the inverter cooling channel and the first cooling channel at the output end; The input terminal receives the coolant flowing back from the inverter cooling channel and the first cooling channel; The inverter cooling channel inlet is connected to the output terminal, the inverter cooling channel outlet is connected to the first cooling channel inlet, and the first cooling channel outlet is connected to the input terminal.

13. The integrated speed control machine according to claim 1, wherein: The drive cooling device also includes a coolant cooling mechanism; At least a portion of the air-cooled heat dissipation mechanism, at least a portion of the coolant heat dissipation mechanism, and the inverter are all disposed on the same side of the housing.

14. The integrated speed control machine according to claim 13, wherein: The coolant heat dissipation mechanism includes: A first cooling assembly is disposed within a cavity defined by the housing to accommodate the motor; The first fan assembly is mounted on the housing; and A first coolant storage assembly is disposed between the first fan assembly and the housing. The first coolant storage assembly is connected to the first cooling assembly and configured to supply coolant to the first cooling assembly. The first fan assembly is configured to dissipate heat from the coolant in the first coolant storage assembly. The air outlet assembly, the first coolant storage assembly, the first fan assembly, and the inverter are all located on the same side of the housing.

15. The integrated speed control machine according to claim 14, wherein: The motor includes an output shaft, a stator, and a rotor, with the output shaft extending from the housing; The first cooling assembly includes: a first cooling channel, at least a portion of which is disposed in the stator in a direction parallel to the output shaft; The air-cooled heat dissipation mechanism further includes an air inlet assembly, which includes an air inlet disposed on the housing. The air inlet is configured to communicate with the cavity so that gas entering the cavity from the air inlet is discharged from the air outlet assembly via the rotor.

16. The integrated speed control machine according to claim 14, wherein: The inverter heat dissipation device and the drive heat dissipation device share the first coolant storage component and the first fan component; The inverter cooling device includes an inverter cooling plate disposed on the side of the inverter device away from the housing, a common first fan assembly disposed on the side of the inverter cooling plate away from the housing, and a common first coolant storage assembly disposed between the common first fan assembly and the inverter cooling plate.

17. The integrated speed control machine according to claim 16, wherein: The inverter heat dissipation device includes: An inverter cooling channel is disposed in the inverter cooling plate and includes an inverter cooling channel inlet and an inverter cooling channel outlet; The first cooling component includes: A first cooling channel, at least a portion of which is disposed in the motor, and the first cooling channel includes a first cooling channel inlet and a first cooling channel outlet; The first coolant storage assembly includes: Coolant storage chamber, the coolant storage chamber comprising: The coolant is output to the inverter cooling channel and the first cooling channel at the output end; The input terminal receives the coolant flowing back from the inverter cooling channel and the first cooling channel; The inverter cooling channel inlet and the first cooling channel inlet are respectively connected to the output terminal, and the inverter cooling channel outlet and the first cooling channel outlet are respectively connected to the input terminal.

18. The integrated speed control machine according to claim 16, wherein: The inverter heat dissipation device includes: An inverter cooling channel is disposed in the inverter cooling plate and includes an inverter cooling channel inlet and an inverter cooling channel outlet; The first cooling component includes: A first cooling channel, at least a portion of which is disposed in the motor, and the first cooling channel includes a first cooling channel inlet and a first cooling channel outlet; The first coolant storage assembly includes: Coolant storage chamber, the coolant storage chamber comprising: The coolant is output to the inverter cooling channel and the first cooling channel at the output end; The input terminal receives the coolant flowing back from the inverter cooling channel and the first cooling channel; The inverter cooling channel inlet is connected to the output terminal, the inverter cooling channel outlet is connected to the first cooling channel inlet, and the first cooling channel outlet is connected to the input terminal.

19. The integrated speed control machine according to claim 1, wherein: The motor includes: a bottom and a top; The housing includes: a bottom surface on the same side as the bottom of the motor, and a top surface on the same side as the top of the motor; At least a portion of the drive heat dissipation device, the inverter device, and the inverter heat dissipation device are all disposed on the top surface of the housing.

20. A well site device comprising the integrated speed changer as described in any one of claims 1 to 19.

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