CN113513462A - Variable speed all-in-one machine and well site equipment thereof - Google Patents

Abstract

An integrated variable speed machine and wellsite equipment thereof, the integrated variable speed machine comprising: a driving device including a motor and a housing for accommodating the motor; the inverter device is arranged on the shell and is electrically connected with the motor; the inversion heat dissipation device is arranged on one side of the inversion device, which is far away from the shell, and is configured to dissipate heat of the inversion device in a cooling liquid heat dissipation manner; a drive heat sink at least partially disposed on the housing and configured to dissipate heat from the drive in at least one of a coolant heat dissipation manner and an air-cooled heat dissipation manner; wherein at least a portion of the driving heat sink and the inverter are disposed on the same side of the housing. In the speed change all-in-one machine provided by the disclosure, the space occupied by the driving heat dissipation device and the inverter on the speed change all-in-one machine is reduced, so that the whole volume of the speed change all-in-one machine is reduced.

Description

Variable speed all-in-one machine and well site equipment thereof

Technical Field

The embodiment of the disclosure relates to a speed change all-in-one machine and well site equipment comprising the same.

Background

At the current oil and gas field fracturing operation site, a plurality of fracturing devices (for example, 10 to 30) are generally required to be used in a centralized way, and the occupied area is larger. In order to reduce the number of devices, high power fracturing devices are increasingly used.

The power driving mode adopted by the high-power fracturing equipment mainly comprises a diesel driving mode and an electric driving mode. For example, in a diesel fracturing apparatus, the power source is a diesel engine, the transmission is a gearbox and a driveshaft, and the actuator is a plunger pump. In an electrically driven fracturing apparatus, the power source is an electric motor, the transmission is a drive shaft or coupling, and the actuator is a plunger pump.

Disclosure of Invention

The first aspect of the present disclosure provides a variable speed all-in-one machine, including: a driving device including a motor and a housing for accommodating the motor; the inverter device is arranged on the shell and is electrically connected with the motor; the inversion heat dissipation device is arranged on one side of the inversion device, which is far away from the shell, and is configured to dissipate heat of the inversion device in a cooling liquid heat dissipation manner; a drive heat sink at least partially disposed on the housing and configured to dissipate heat from the drive in at least one of a coolant heat dissipation manner and an air-cooled heat dissipation manner; wherein at least a portion of the driving heat sink and the inverter are disposed on the same side of the housing.

In at least some embodiments, the housing defines a cavity that houses the motor, and the drive heat sink includes: the air-cooled heat dissipation mechanism comprises an air outlet assembly communicated with the cavity, and the air outlet assembly and the inverter are arranged on the same side of the shell.

In at least some embodiments, the air-cooled heat dissipation mechanism includes at least two air outlet assemblies, and air outlet directions of the at least two air outlet assemblies are the same as or different from each other.

In at least some embodiments, the air outlet assembly includes: the heat radiation fan is arranged on the shell; a fan volute disposed between the heat dissipation fan and the housing; and an exhaust duct; the first side of the fan volute is communicated with the heat dissipation fan, the second side of the fan volute is communicated with the cavity, the third side of the fan volute is communicated with the exhaust duct, the motor comprises an output shaft, and the first side and the second side are opposite to each other in the direction perpendicular to the output shaft; wherein the heat dissipation fan is configured to draw gas within the cavity into the fan volute and the gas is exhausted through the exhaust duct.

In at least some embodiments, the exhaust duct comprises: the air outlet faces to the direction far away from the shell; and an outlet cover rotatably coupled to the outlet and configured to cover the outlet.

In at least some embodiments, 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 outlet assembly and the inverter device are disposed on the first side of the housing; the air-cooled heat dissipation mechanism further comprises: the air inlet assembly comprises an air inlet arranged on the second side of the shell, and the air inlet is configured to be communicated with the cavity so that air entering the cavity from the air inlet passes through the motor and then is discharged from the air outlet assembly.

In at least some embodiments, the intake assembly further comprises: the groove is arranged on the second side of the shell, and the air inlet is arranged in 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.

In at least some embodiments, the drive heat sink comprises: the cooling liquid heat dissipation mechanism, the cooling liquid heat dissipation mechanism includes: a first cooling assembly disposed in a cavity defined by the housing that houses the electric machine; a first fan assembly disposed on the housing; and a first cooling fluid storage assembly disposed between the first fan assembly and the housing, the first cooling fluid storage assembly in communication with the first cooling assembly and configured to provide cooling fluid to the first cooling assembly, the first fan assembly configured to dissipate heat from the cooling fluid in the first cooling fluid storage assembly; wherein the first cooling liquid storage assembly, the first fan assembly and the inverter are all disposed on the same side of the housing.

In at least some embodiments, the inverter heat sink and the drive heat sink share the first coolant storage assembly and the first fan assembly; the inversion heat dissipation device comprises an inversion cooling plate arranged on one side, far away from the shell, of the inversion device, the shared first fan assembly is arranged on one side, far away from the shell, of the inversion cooling plate, and the shared first cooling liquid storage assembly is arranged between the shared first fan assembly and the inversion cooling plate.

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 one another in a direction perpendicular to the output shaft; the common first coolant storage assembly, the common first fan assembly, the inverter device, and the inverter cooling plate are all disposed on a first side of the housing, and the inverter device covers a part or all of an outer surface of the first side of the housing.

In at least some embodiments, the inverter heat sink comprises: an inversion cooling channel disposed in the inversion cooling plate and including an inversion cooling channel inlet and an inversion cooling channel outlet. The first cooling assembly includes: a first cooling channel, at least a portion of the first cooling channel disposed in the electric machine and the first cooling channel including 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 comprising: an output end that outputs the coolant to the inversion cooling channel and the first cooling channel; an input to receive the coolant returned from the inversion cooling channel and the first cooling channel; the inlet of the inversion cooling channel and the inlet of the first cooling channel are respectively connected with the output end, and the outlet of the inversion cooling channel and the outlet of the first cooling channel are respectively connected with the input end.

In at least some embodiments, the inverter heat sink comprises: an inversion cooling channel disposed in the inversion cooling plate and including an inversion cooling channel inlet and an inversion cooling channel outlet. The first cooling assembly includes: a first cooling channel, at least a portion of the first cooling channel disposed in the electric machine and the first cooling channel including 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 comprising: an output end that outputs the coolant to the inversion cooling channel and the first cooling channel; an input to receive the coolant returned from the inversion cooling channel and the first cooling channel; the inlet of the inversion cooling channel is connected with the output end, the outlet of the inversion cooling channel is connected with the inlet of the first cooling channel, and the outlet of the first cooling channel is connected with the input end.

In at least some embodiments, the drive heat sink includes an air-cooled heat sink mechanism and a coolant heat sink mechanism; at least one part of the air-cooled heat dissipation mechanism, at least one part of the cooling liquid heat dissipation mechanism and the inverter are arranged on the same side of the shell.

In at least some embodiments, the housing defines a cavity that houses the electric machine; the air-cooled heat dissipation mechanism comprises an air outlet assembly communicated with the cavity. The cooling liquid heat dissipation mechanism includes: a first cooling assembly disposed in a cavity defined by the housing that houses the electric machine; a first fan assembly disposed on the housing; and a first cooling fluid storage assembly disposed between the first fan assembly and the housing, the first cooling fluid storage assembly in communication with the first cooling assembly and configured to provide cooling fluid to the first cooling assembly, the first fan assembly configured to dissipate heat from the cooling fluid in the first cooling fluid storage assembly; the air outlet assembly, the first cooling liquid storage assembly, the first fan assembly and the inverter are arranged on the same side of the shell.

In at least some embodiments, the electric machine includes an output shaft, a stator, and a rotor, the output shaft extending from the housing; the first cooling assembly includes: a first cooling passage, 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 comprises: the air inlet assembly comprises an air inlet arranged on the shell, and the air inlet is configured to be communicated with the cavity so that the air entering the cavity from the air inlet is discharged from the air outlet assembly through the rotor.

In at least some embodiments, the inverter heat sink comprises: an inversion cooling channel disposed in the inversion cooling plate and including an inversion cooling channel inlet and an inversion cooling channel outlet. The first cooling assembly includes: a first cooling channel, at least a portion of the first cooling channel disposed in the electric machine and the first cooling channel including 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 comprising: an output end that outputs the coolant to the inversion cooling channel and the first cooling channel; an input to receive the coolant returned from the inversion cooling channel and the first cooling channel; the inlet of the inversion cooling channel and the inlet of the first cooling channel are respectively connected with the output end, and the outlet of the inversion cooling channel and the outlet of the first cooling channel are respectively connected with the input end.

In at least some embodiments, the inverter heat sink comprises: an inversion cooling channel disposed in the inversion cooling plate and including an inversion cooling channel inlet and an inversion cooling channel outlet. The first cooling assembly includes: a first cooling channel, at least a portion of the first cooling channel disposed in the electric machine and the first cooling channel including 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 comprising: an output end that outputs the coolant to the inversion cooling channel and the first cooling channel; an input to receive the coolant returned from the inversion cooling channel and the first cooling channel; the inlet of the inversion cooling channel is connected with the output end, the outlet of the inversion cooling channel is connected with the inlet of the first cooling channel, and the outlet of the first cooling channel is connected with the input end.

In at least some embodiments, the inverter heat sink and the drive heat sink share the first coolant storage assembly and the first fan assembly; the inversion heat dissipation device comprises an inversion cooling plate arranged on one side, far away from the shell, of the inversion device, the shared first fan assembly is arranged on one side, far away from the shell, of the inversion cooling plate, and the shared first cooling liquid storage assembly is arranged between the shared first fan assembly and the inversion cooling plate.

In at least some embodiments, the motor includes a bottom portion and a top portion; 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 sink, the inverter device, and the inverter heat sink are disposed on a top surface of the housing.

A second aspect of the disclosure provides wellsite equipment comprising the variable speed integrated machine described above.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure and are not limiting to the present disclosure.

FIG. 1 is a perspective view of a variator according to an embodiment of the disclosure from a first perspective.

Fig. 2 is a schematic structural view of the integrated transaxle of fig. 1.

FIG. 3 is a perspective view of the integrated transaxle of FIG. 1 from a second perspective.

Fig. 4 is a schematic structural diagram of the driving device and the driving heat sink in fig. 1.

Fig. 5 is a schematic structural view of the inverter cooling plate of fig. 1.

Fig. 6 is a schematic structural view of the inverter and the inverter heat sink in fig. 2.

FIG. 7 is an enlarged bottom schematic view of the integrated transaxle of FIG. 3.

FIG. 8 is a schematic structural diagram of a variator according to another embodiment of the disclosure.

FIG. 9 is a perspective view of a variator according to another embodiment of the disclosure.

Fig. 10 is a schematic structural view of the integrated transaxle of fig. 9.

Fig. 11 is a schematic cross-sectional view of a stator in a drive device according to an embodiment of the present disclosure.

Fig. 12 is a perspective view of a shift dome according to yet another embodiment of the present disclosure.

Fig. 13 is a schematic structural view of the integrated transaxle of fig. 12.

Fig. 14 to 19 schematically show connection block diagrams of examples of the first cooling channel and the inverter cooling channel connected in parallel.

Fig. 20 and 21 schematically show connection block diagrams of examples of the first cooling channel and the inverter cooling channel connected in series.

FIG. 22 is a perspective view of a variator according to yet another embodiment of the disclosure.

Fig. 23 to 24 schematically show connection block diagrams of examples of the first cooling channel and the inverter cooling channel connected in parallel when heat is radiated to the motor simultaneously in an air-cooled heat radiation manner and a coolant heat radiation manner.

Fig. 25 schematically shows a connection block diagram of an example of the first cooling channel and the inverter cooling channel connected in series when the motor is radiated with the air-cooling radiation manner and the coolant radiation manner at the same time.

Fig. 26 is a schematic structural diagram of an electrically driven fracturing apparatus provided in accordance with an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

Compared with diesel drive fracturing equipment, the electrically-driven fracturing equipment has the advantages of low noise, no exhaust emission pollution and the like. However, in the existing electrically-driven fracturing equipment, since the rotation speed adjustment of the motor requires a special frequency converter for driving, and the frequency converter comprises a rectifying unit (such as a rectifying transformer) and an inverter, the occupied space of the frequency converter on the electrically-driven fracturing equipment is large, the weight is large, and the transportation or the movement is inconvenient. Moreover, the connecting cables between the motor and the frequency converter are more, and the operation is more complicated.

Therefore, a speed change all-in-one machine is provided, namely, the motor and the inverter are designed integrally. The rectifying unit is not arranged on the speed-changing integrated machine, so that the rectifying unit is separately arranged independently from the motor and the inverter, and the speed regulation and the driving can be realized by one speed-changing integrated machine. Not only effectively reduced the shared space of motor and converter on the fracturing equipment of electricity drive, reduced the weight of the fracturing equipment of electricity drive moreover, made the transportation more convenient, in addition, also provided more space guarantees for installing other equipment on the fracturing equipment.

In the working process of the speed change all-in-one machine, because the power of the motor and the inverter is high, a large amount of heat can be generated, and therefore a heat dissipation device needs to be arranged to dissipate heat of the speed change all-in-one machine so as to ensure the continuous work of the motor and the inverter within a normal temperature range.

At least one embodiment of the present disclosure provides a variable speed all-in-one machine, including: a drive device including a motor and a housing for housing the motor; an inverter device disposed on the housing and electrically connected to the motor; the inversion heat dissipation device is arranged on one side of the inversion device, which is far away from the shell, and is configured to dissipate heat of the inversion device in a cooling liquid heat dissipation manner; a drive heat sink at least a portion of which is disposed on the housing and configured to dissipate heat from the drive in at least one of a coolant heat dissipation manner and an air-cooled heat dissipation manner; wherein at least a portion of the driving heat sink and the inverter are disposed on the same side of the housing.

In the speed change all-in-one machine provided by at least one embodiment of the disclosure, the inversion device is cooled by the inversion cooling device, and the driving device is cooled by the driving cooling device, so that continuous operation of the driving device and the inversion device in a well site at normal temperature is effectively ensured.

When at least one part of the driving heat dissipation device and the inverter device in the all-in-one speed changing machine are respectively arranged on different sides of the shell, the driving heat dissipation device and the inverter device are distributed on the surface of the shell in a distributed mode, and therefore the all-in-one speed changing machine is not compact in structure and the whole size of the all-in-one speed changing machine is increased. When the variable speed integrated machine with larger integral volume is applied to wellsite equipment such as fracturing equipment or cementing equipment, the occupied space of the variable speed integrated machine on the wellsite equipment is larger. When additional devices are added to the well site equipment, the installation space is insufficient, and therefore, the subsequent work is difficult.

In the all-in-one speed change machine provided by at least one embodiment of the disclosure, at least one part of the driving heat dissipation device and the inverter device are arranged on the same side of the shell, so that the space occupied by the driving heat dissipation device and the inverter device on the all-in-one speed change machine is saved, and the overall volume of the all-in-one speed change machine is reduced. When the integrated variable speed machine with smaller overall volume is applied to well site equipment, the overall volume of the integrated variable speed machine is reduced, and the occupied space of the integrated variable speed machine on the well site equipment is also reduced, so that more space guarantee can be provided for installing other devices on the well site equipment.

Further, for example, in a fracturing job, a plurality of electrically driven fracturing trucks (also called electrically driven fracturing truck trains) are often provided to perform the fracturing job in concert. In order to reduce the footprint of an electrically driven frac consist in a well site, multiple electrically driven frac cars are typically parked in a side-by-side fashion, i.e., parallel and spaced apart from each other. In this case, if at least a part of the driving heat sink and the inverter device in the integrated variable speed machine on each electrically-driven fracturing truck are respectively disposed on different sides of the housing (for example, the inverter device is disposed on the top surface of the housing and at least a part of the driving heat sink is disposed on the side surface of the housing), at least a part of the driving heat sink disposed on the side surface may be too small in distance from the electrically-driven fracturing truck adjacent thereto, thereby affecting the heat dissipation effect of the adjacent electrically-driven fracturing truck.

In the variable speed all-in-one machine provided by at least one embodiment of the disclosure, at least one part of the driving heat dissipation device and the inverter device are arranged on the same side of the shell, so that the influence on the heat dissipation effect of the driving device of the electrically driven fracturing truck caused by the small distance between the driving heat dissipation device and the adjacent electrically driven fracturing truck can be reduced or even eliminated as much as possible. Especially when all setting up at least a part of drive heat abstractor and inverter on the top surface of shell, because what occupy electrically drive the headspace of fracturing truck, the side space is not influenced by it, even the horizontal interval between two electrically driven fracturing trucks is less, does not influence the radiating effect of two electrically driven fracturing trucks either.

In the embodiment of the disclosure, the cooling liquid heat dissipation mode refers to the mode that the cooling liquid is used for taking away heat generated by a device to be cooled, so that the purpose of heat dissipation is achieved. The cooling fluid, for example, comprises a liquid fluid including, but not limited to, at least one of water, organic matter, or inorganic matter.

In the embodiment of the present disclosure, the air-cooling heat dissipation mode is also called an air-cooling heat dissipation mode, and means that the purpose of heat dissipation is achieved by introducing air into the device to be cooled. Compared with a cooling liquid heat dissipation mode, the air cooling heat dissipation mode is simple in structure, small in size, light in weight, small in thermal resistance, large in heat exchange area and very convenient to use and install.

In the embodiments of the present disclosure, the same side of the housing refers to, for example, the same surface of the housing of the driving device. When the housing of the driving device includes a plurality of surfaces, at least a portion of the driving heat sink and the inverter device are disposed on the same one of the plurality of surfaces of the housing. In the embodiments of the present disclosure, "a plurality" means two or more.

In the embodiment of the disclosure, the driving heat dissipation device may dissipate heat of the driving device in at least one of a cooling liquid heat dissipation manner and an air-cooled heat dissipation manner. That is, the driving heat sink may dissipate heat of the driving device only in a cooling liquid heat dissipation manner; or, the driving heat dissipation device can only dissipate heat of the driving device in an air cooling heat dissipation manner; or the driving heat dissipation device dissipates heat to the driving device in two heat dissipation modes, namely a cooling liquid heat dissipation mode and an air cooling heat dissipation mode. In all embodiments of the present disclosure, the inverter heat dissipation device adopts a cooling liquid heat dissipation manner.

The present disclosure is illustrated by the following specific examples. Detailed descriptions of known functions and known components may be omitted in order to keep the following description of the embodiments of the present disclosure clear and concise. When any component of an embodiment of the present disclosure appears in more than one drawing, that component may be referred to by the same reference numeral in each drawing.

FIG. 1 is a perspective view of a variator according to an embodiment of the disclosure from a first perspective. Fig. 2 is a schematic structural view of the integrated transaxle of fig. 1.

As shown in fig. 1 to 2, the all-in-one variable speed machine provided by at least one embodiment of the present disclosure includes a driving device 1, a driving heat dissipation device 2, an inverter device 3, and an inverter heat dissipation device 4.

For example, the drive device 1 includes a motor 10 and a housing 12 for accommodating the motor 10. The electric machine 10 (also called a motor) refers to an electromagnetic device that performs electric energy conversion or transmission according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for well site equipment. The motor may comprise an ac motor or a dc motor. In the embodiment of the present disclosure, the motor 10 is an ac motor, that is, dc power is converted into ac power.

For example, as shown in fig. 2, the housing 12 defines a cavity 13 that houses the electric machine 10. That is, the motor 10 is disposed inside the housing 12. The surface of the housing 12 facing the motor 10 is an inner surface, and the surface facing away from the motor 10 is an outer surface, for example, the outer surface includes a top surface, a bottom surface, and side surfaces.

As shown in fig. 1 and 2, the housing 12 is substantially rectangular parallelepiped in shape. In at least some embodiments, the shape of the casing 12 may also be a cylindrical body, such as a cube, a cylinder, etc., and the shape of the casing 12 is not limited in the embodiments of the present disclosure, and when the shape of the casing 12 is a cuboid or a cube, it is beneficial to fixedly mount the inverter device 3 and the inverter heat sink 4 on the casing 12, so as to enhance the stability of the whole apparatus.

FIG. 3 is a perspective view of the integrated transaxle of FIG. 1 from a second perspective. Fig. 4 is a schematic structural diagram of the driving device and the driving heat sink in fig. 1.

As shown in fig. 1, 2 and 4, the motor 10 includes an output shaft 14, a stator 15, a rotor 16, an end cover 17 and a bearing cover 18.

For example, as shown in fig. 4, the stator 15 is a stationary part in the motor 10, which functions to generate a magnetic field and serves as a mechanical support for the motor. The stator 15 is, for example, an outermost cylinder, a plurality of windings are wound around the inside of the cylinder, the windings are connected to an external ac power source, and the entire cylinder is connected to the base and is fixed. The stator 15 includes, for example, a stator core, a stator winding, and a housing.

For example, the rotor 16 is a rotating part in the motor 10, and the rotor 16 is disposed in an inner cavity of the stator 15, which is connected to the power output shaft 14 of the motor 10 and rotates at the same speed. The rotor 16 includes, for example, a rotor core and a rotor winding. There is no connection or contact between the stator 15 and the rotor 16, but when the stator windings are energized with ac power, the rotor 16 immediately starts to rotate and outputs power through the power take-off shaft 14.

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

For example, as shown in fig. 3, the housing 12 further includes a third side S3 and a fourth side S4 opposite to each other in a third direction (e.g., the z direction shown in fig. 2), and accordingly, the housing 12 has two side surfaces F3, F4 corresponding to the third side S3 and the fourth side S4, respectively.

In at least some embodiments, the inverter device 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 enclosure 12. For example, the inverter device 3 may be located on one of the top surface F1, the bottom surface F2, and the two side surfaces F3 of the case 12. As shown in fig. 1 and 2, the inverter device 3 is located on the top surface F1 of the housing 12, and the top surface F1 of the housing 12 is used for fixing and supporting the inverter device 3.

When the trans-speed integrated machine is applied to wellsite equipment such as an electrically driven fracking vehicle, the inverter device 3 is located on one of the first side S1, the third side S3, and the fourth side S4 of the housing 12, i.e., the inverter device 3 is not located on the second side S2 of the housing 12, because the second side S2, which is the bottom of the trans-speed integrated machine, may be in direct contact with the electrically driven fracking vehicle when the trans-speed integrated machine is placed or mounted on the electrically driven fracking vehicle.

The connection mode between the inverter device 3 and the housing 12 is not limited in the embodiment of the present disclosure, as long as the inverter device and the housing can be fixedly mounted together. For example, the housing 12 and the inverter device 3 may be fixedly attached by bolts, caulking, welding, or the like.

In at least some embodiments, the inverter device 3 is an inverter that is electrically connected to the electric machine 10. For example, the inverter device 3 is connected to the motor 10 through a power supply line for supplying power to the motor 10. Generally, when the frequency converter converts the frequency of the ac power source, the ac power is first converted into dc power, i.e., "rectified", and then the dc power is converted into variable frequency ac power, i.e., "inverted".

The inverter and the motor are integrated in the speed change all-in-one machine of the embodiment of the disclosure, and the rectification unit is not included, so that only the inverter device 3 is arranged on the driving device 1, and the whole volume and weight of the speed change all-in-one machine are reduced. The variable frequency alternating current is output to the motor 10 through the inverter device 3 to adjust the rotation speed of the motor 10.

As shown in fig. 1 and 2, the inverter heat sink 4 is disposed on a side of the inverter device 3 away from the housing 12. That is, the inverter device 3 and the inverter heat sink 4 are both disposed on the same side of the housing 12, and the inverter device 3 is located between the housing 12 and the inverter heat sink 4.

When the inverter device 3 and the inverter heat sink 4 are respectively disposed on different sides of the housing 12, the inverter device 3 and the inverter heat sink 4 are disposed on different surfaces of the housing 12, and this arrangement increases the overall size of the all-in-one variable speed machine. In addition, since the inverter heat sink 4 dissipates heat to the inverter device 3 in a cooling liquid heat dissipation manner, when the inverter heat sink and the cooling device are located on different surfaces of the housing 12, the length of the cooling pipeline for supplying the cooling liquid needs to be designed to be longer, which may affect the heat dissipation effect of the inverter heat sink 4 on the inverter device 3.

In the speed change all-in-one machine of at least one embodiment of the present disclosure, the inverter device 3 and the inverter heat dissipation device 4 are disposed on the same side of the housing 12, so that the structure of the speed change all-in-one machine is more compact, and the heat dissipation effect of the inverter heat dissipation device 4 on the inverter device 3 can also be ensured.

For example, as shown in fig. 1, the inverter heat sink 4 includes an inverter cooling plate 41 (also referred to as a water cooling plate), an inverter cooling fluid storage assembly 42, and an inverter fan assembly 43. The inverter cooling plate 41, the inverter cooling liquid storage assembly 42 and the inverter fan assembly 43 are sequentially disposed on a first side S1, for example, a top surface F1, of the case 12. That is, the inverter cooling plate 41 is disposed on a side of the inverter device 3 away from the case 12, the inverter cooling liquid storage assembly 42 is disposed on a side of the inverter cooling plate 41 away from the case 12, and the inverter fan assembly 43 is disposed on a side of the inverter cooling liquid storage assembly 42 away from the case 12.

For example, as shown in fig. 2, the inverter device 3 is located between the top surface F1 of the case 12 and the inverter cooling plate 41. The inverter device 3 includes a first surface BM1 close to the case 12 and a second surface BM2 far from the case 12. That is, the first surface BM1 and the second surface BM2 are opposed to each other in a direction perpendicular to the output shaft 14 (e.g., the y direction shown in the drawing), and the first surface BM1 is closer to the housing 12 than the second surface BM 2. The inversion cooling plate 41 is located on the second surface BM2 and directly contacts the second surface BM 2. Thus, when the cooling liquid is introduced into the inverter cooling plate 41, the inverter cooling plate 41 and the second surface BM2 of the inverter device 3 are in contact with each other, which is beneficial to achieving a heat conduction effect, and thus the inverter device 3 can be cooled and radiated more effectively.

For example, the inverter cooling plate 41 and the inverter device 3 overlap each other in a direction perpendicular to the output shaft 14 (e.g., the y direction shown in the drawing), and the overlap may be partial overlap or complete overlap. As shown in fig. 2, the inverter cooling plate 41 and the inverter device 3 are completely overlapped in the y direction, that is, the inverter cooling plate 41 completely covers the second surface BM2 of the inverter device 3, so that the area of heat conduction can be increased, and a better heat dissipation effect can be achieved.

Fig. 5 is a schematic structural view of the inverter cooling plate of fig. 1. For example, as shown in fig. 5, the inverter cooling plate 41 includes, for example, an inverter cooling passage 51. The inversion cooling channel 51 includes at least one inversion cooling pipe, an inversion cooling channel inlet 51i, and an inversion cooling channel outlet 51 o. At least one inverter cooling pipe, an inverter cooling channel inlet 51i and an inverter cooling channel outlet 51o are disposed on a side of the inverter cooling plate 41 far from the inverter device 3, that is, an upper side of the inverter cooling plate 41 shown in fig. 2.

For example, the inversion cooling channel inlet 51i communicates with a first end (e.g., right end as shown) of the at least one inversion cooling tube, and the inversion cooling channel outlet 51o communicates with a second end (e.g., left end as shown) of the at least one inversion 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.

When the inversion cooling liquid flows in at least one inversion cooling pipe of the inversion cooling plate 41, heat exchange can be performed on the inversion device 3 positioned below the inversion cooling plate 41, so that the purpose of cooling the inversion device 3 is achieved. In order to enhance the cooling effect, the inversion cooling plate 41 is in direct contact with the inversion device 3. In one example, the inversion coolant includes water.

For example, the inverter cooling passage 51 includes an inverter cooling pipe 51a and an inverter cooling pipe 51 b. The inverter cooling pipe 51a and the inverter cooling pipe 51b share the inverter cooling passage inlet 51i and the inverter cooling passage outlet 51 o. That is, the inverter cooling pipe 51a and the inverter cooling pipe 51b are both communicated with the inverter cooling passage inlet 51i, and the inverter cooling pipe 51a and the inverter cooling pipe 51b are both communicated with the inverter cooling passage outlet 51 o. After the inversion cooling liquid enters from the inversion cooling channel inlet 51i, the inversion cooling liquid flows into the inversion cooling pipe 51a and the inversion cooling pipe 51b respectively, exchanges heat with the inversion device 3, and then the inversion cooling liquid after heat exchange is intersected and flows out at the inversion cooling channel outlet 51 o.

In the embodiment of the present disclosure, by providing two inverter cooling pipes 51a and 51b, one common inverter cooling channel inlet 51i, and one common inverter cooling channel outlet 51o, not only the heat exchange area of the water cooling plate can be increased, the cooling effect can be enhanced, but also the process for manufacturing the inverter cooling plate can be simplified, and the manufacturing cost can be reduced.

In at least some embodiments, the inversion cooling tubes 51a and the inversion cooling tubes 51b may have the same or different tube run distributions. For example, as shown in fig. 5. The inverter cooling pipe 51a and the inverter cooling pipe 51b are mirror-symmetrical with respect to the center line O1O2 of the inverter cooling plate 41. Since the inverter cooling pipe 51a and the inverter cooling pipe 51b have the same pipe line direction distribution, the manufacturing process of the inverter cooling plate can be further simplified.

Fig. 5 only schematically shows that the lines of the inverter cooling pipe 51a and the inverter cooling pipe 51b are S-shaped. In other embodiments of the present disclosure, the inversion cooling pipe 51a and the inversion cooling pipe 51b may also have other pipe line distributions, for example, the pipe line distributions are zigzag, linear, and the like, which is not limited in the embodiments of the present disclosure.

Fig. 6 is a schematic structural diagram of the inverter and the inverter heat sink of fig. 2. For example, as shown in fig. 6, the inverter coolant storage unit 42 is disposed on a side of the inverter cooling plate 41 remote from the inverter device 3, and includes an inverter coolant storage chamber 52 communicating with the inverter cooling plate 41 to store the inverter coolant and supply the inverter coolant to the inverter cooling plate 41. Here, the inverter coolant refers to a coolant for cooling the inverter device 3.

For example, a first end (e.g., right end as viewed in the drawing) of the inverted coolant storage chamber 52 is connected to the inverted coolant channel inlet 51i through a first connection pipe 53, and a second end (e.g., left end as viewed in the drawing) of the inverted coolant storage chamber 52, which is different from the first end, is connected to the inverted coolant channel outlet 51o through a second connection pipe 54, and the first end and the second end are opposite to each other in the z direction. In the embodiment of the present disclosure, the inverter cooling liquid flows from the inverter cooling liquid storage chamber 52 into the inverter cooling plate 41 through the first connection pipe 53, and flows back from the inverter cooling plate 41 to the inverter cooling liquid storage chamber 52 through the second connection pipe 54, thereby achieving the purpose of recycling.

For example, the inverter fan assembly 43 is disposed on a 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 the inverter fan assemblies 43 may be one or multiple, and a person skilled in the art may determine the specific number of the inverter fan assemblies 43 according to the area of the inverter cooling liquid storage assembly 42, which is not limited in the embodiment of the present disclosure.

For example, the inverter fan assembly 43 includes a first inverter fan assembly 43a and a second inverter fan assembly 43 b. The first and second inverter fan assemblies 43a and 43b are arranged side by side in the z direction above the inverter coolant storage chamber 52.

For example, the first inverter fan assembly 43a includes a heat dissipation fan 45 and a heat dissipation motor 47. The heat dissipation motor 47 is disposed on the inverter cooling liquid storage assembly 42, and the heat dissipation fan 45 is disposed between the heat dissipation motor 47 and the inverter cooling liquid storage assembly 42. When the heat dissipation motor 47 works, the impeller of the heat dissipation fan 45 is driven to rotate, and the wind generated by the rotation of the impeller is utilized to cool the inverted coolant in the inverted coolant storage assembly 42 (e.g., the inverted coolant storage chamber 52).

For example, the second inverter fan assembly 43b includes a heat dissipation fan 46 and a heat dissipation motor 48. The heat dissipation motor 48 is disposed on the inverter coolant storage module 42, and the heat dissipation fan 46 is disposed between the heat dissipation motor 48 and the inverter coolant storage module 42. When the heat dissipation motor 48 works, the impeller of the heat dissipation fan 46 is driven to rotate, and the wind generated by the rotation of the impeller is utilized to cool the inverted coolant in the inverted coolant storage assembly 42 (e.g., the inverted coolant storage chamber 52).

Compare and only set up an inverter fan subassembly on contravariant coolant liquid apotheca 52, adopt first inverter fan subassembly 43a and second inverter fan subassembly 43b can cool down the contravariant coolant liquid in the contravariant coolant liquid apotheca 52 simultaneously to reinforcing cooling effect.

The operation principle of the inverter heat sink 4 will be explained below. As shown in fig. 6, when the inverter heat sink 4 operates, the inverter cooling liquid flows from the inverter cooling liquid storage chamber 52 into the inverter cooling passage 51 through the inverter cooling passage inlet 51i and the first connection pipe 53, and then flows in the inverter cooling passage 51 in the first moving direction v 1. In the flowing process, the inversion cooling liquid takes away the heat generated by the heat generating components in the inversion device 3 in a heat exchange mode to cool the heat generating components. After the heat exchange is performed on the heat generating components by the inverted coolant, the inverted coolant having a raised temperature flows back to the inverted coolant storage chamber 52 through the inverted coolant channel outlet 51o and the second connection pipe 54. Next, the inverted coolant flowing back into the inverted coolant storage chamber 52 flows in the second moving direction v 2. Meanwhile, the first inverter fan assembly 43a and the second inverter fan assembly 43b cool the inverter cooling liquid, and thus the cooled inverter cooling liquid flows into the inverter cooling plate 41 to continuously cool the inverter device 3. It should be noted that, in order to avoid the occurrence of the leakage phenomenon, the inverter cooling liquid of the embodiment of the present disclosure is electrically isolated from the electrical parts in the inverter device 3.

In the inverter heat dissipation device 4 of the embodiment of the present disclosure, by providing the inverter cooling plate 41, the inverter cooling liquid storage component 42, and the inverter fan component 43, not only the heat dissipation effect on the inverter device 3 is improved, but also the overall size of the variable speed all-in-one machine is reduced. In addition, the inversion cooling liquid can be recycled, so that the production cost is reduced, the waste water discharge is reduced, and the environmental pollution is avoided.

As shown in fig. 1 to 4, for example, the driving heat sink 2 only dissipates heat to the driving device 1 in an air-cooled heat dissipation manner, and in this case, the driving heat sink 2 only includes an air-cooled heat dissipation mechanism.

At least a portion of the air-cooled heat dissipation mechanism is disposed on the same side of the housing 12 as the upwind device 3 in at least some embodiments. For example, as shown in fig. 1 and fig. 2, the air-cooled heat dissipation mechanism 2A includes an air outlet assembly 20 communicated with the cavity 13 of the housing 12, and the air outlet assembly 20, the upwind device 3, and the upwind 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 arranging the air outlet assembly 20, the inverter device 3 and the upwind heat dissipation device 4 on the same top surface F1 of the casing 12, the space occupied by the driving heat dissipation device 2, the inverter device 3 and the inverter heat dissipation device 4 on the all-in-one variable speed machine is saved, and the overall size of the all-in-one variable speed machine is reduced. When the integrated variable speed machine with smaller overall volume is applied to well site equipment, the overall volume of the integrated variable speed machine is reduced, and the occupied space of the integrated variable speed machine on the well site equipment is also reduced, so that more space guarantee can be provided for installing other devices on the well site equipment.

As shown in fig. 2, for example, the drive device 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 a shaft extension end of the drive device 1. The second end E2 is remote from the output shaft 14 and is a non-shaft-extending end of the drive device 2. The inverter device 3 and the inverter heat sink 4 are disposed on a portion of the top surface F1 of the case 12 near the first end E1 in a stacked manner, and the air outlet assembly 20 is disposed on another portion of the top surface F1 of the case 12 near the second end E2. By disposing the air outlet assembly 20 and the inverter device 3 (and the inverter heat sink 4) at the first end E1 and the second end E2, respectively, not only the top surface space of the housing 12 is fully utilized, but also the mutual interference between the driving heat sink and the inverter heat sink 4 in heat dissipation is avoided.

In at least some embodiments, the number of the air outlet assemblies 20 may be one or more. When air-cooled heat dissipation mechanism 2A includes a plurality of air-out subassemblies, utilize a plurality of air-out subassemblies to dispel the heat to drive arrangement 1 simultaneously, can strengthen the radiating effect to drive arrangement 1.

For example, as shown in fig. 1 and fig. 2, the air-cooled heat dissipation mechanism 2A includes a first air outlet assembly 20a and a second air outlet assembly 20 b. The first air outlet assembly 20a and the second air outlet assembly 20b are arranged on the top surface F1 side by side along the z direction. The first air outlet assembly 20a, the second air outlet assembly 20b, the upwind device 3 and the upwind heat sink 4 are disposed on the same side of the casing 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 upwind heat dissipation device 4 on the same top surface F1 of the casing 12, the space occupied by the driving heat dissipation device 2, the inverter device 3 and the inverter heat dissipation device 4 on the all-in-one gear shifting machine is further saved, and the overall size of the all-in-one gear shifting machine is reduced. In addition, the heat radiation effect of the driving heat radiation device 2 on the driving device 1 is enhanced.

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 in arrangement design of the air outlet assemblies on the housing 12 can be reduced, and the manufacturing process is simplified.

For example, the first air-out assembly 20a includes a heat radiation fan 21a, an exhaust duct 22a, and a fan scroll 25 a. The radiator fan 21a is disposed on the top surface F1 of the housing 10 with the fan volute 25a between the radiator fan 21a and the top surface F1. A first side 251 (e.g., an upper end as viewed in the drawing) of the fan scroll 25a communicates with the radiator fan 21a, a second side 252 (e.g., a lower side as viewed in the drawing) communicates with the cavity 13 of the casing 12, and a third side 253 (e.g., a left side as viewed in the drawing) communicates with the exhaust duct 22 a. 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 on a side of the fan volute 25a away from the inverter device 3. The blower volute 25a is respectively communicated with the heat radiation blower 21a, the exhaust duct 22a and the cavity 13, so that the air in the cavity 13 is favorably pumped out to the exhaust duct 22a to be exhausted when the heat radiation blower 21a works.

For example, the exhaust duct 22a includes an air outlet 23 a. For example, the outlet 23a faces away from the housing 12, such as toward the top of the kiosk. By disposing the outlet 23a to face away from the housing 12, the gas with higher temperature can be discharged from the exhaust duct 22 a. Moreover, when the gas is discharged from the air outlet 23a toward the top of the all-in-one speed change machine, the interference or influence on the inverter device 3 or the inverter heat dissipation device 4 can be avoided, and the heat dissipation effect of the inverter heat dissipation device 4 on the inverter device 3 is further ensured.

In an actual well site, it may be windy or rainy, and if no shielding is provided on the air outlet 23a, sand or rain may fall into the air exhaust duct 22 a. Especially, in the case of extreme weather such as sand storm, there is a possibility that the air exhaust duct 22a is clogged due to a large amount of sand falling into the air exhaust duct.

For example, an outlet cover 24a is disposed at the outlet 23a, and the outlet cover 24a is rotatably connected to the outlet 23a, for example, so that the outlet cover 24a covers the outlet 23 a. Thus, when the air outlet 23a needs to be shielded, the air outlet cover plate 24a can be simply rotated to cover the air outlet 23a, so that external sand or rain water is prevented from falling into the exhaust duct 22a, and the exhaust duct is prevented from being blocked. For example, the area of the air outlet cover plate 24a is greater than or equal to the area of the air outlet 23a, so as to achieve a better shielding effect.

The connection mode of the air outlet cover plate 24a and the exhaust duct 22a in the embodiment of the present disclosure is not limited, as long as the air outlet cover plate 24a can move relative to the air outlet 23a, for example, the two can be hinged or screwed.

Fig. 2 only schematically shows one air outlet cover plate 24a, and in other embodiments of the present disclosure, a plurality of air outlet cover plates may be further disposed on the air outlet 23 a. For example, two air outlet cover plates arranged oppositely are installed on the air outlet 23a, and when the two air outlet cover plates are in a closed state, the air outlet 23a can be covered; when the two outlet cover plates are in the open state, the outlet 23a is not covered by any outlet cover plate, and at this time, the air in the exhaust duct 22a can be exhausted from the outlet 23 a. Therefore, the purpose of shielding the air outlet 23a can be realized by closing the two air outlet cover plates. Therefore, the number of the air outlet cover plates 24a is not limited in the embodiment of the present disclosure.

For example, as shown in fig. 1, 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.

For example, the second air outlet assembly 20b includes a radiator fan 21b, an exhaust duct 22b, and a fan scroll 25 b. The radiator fan 21b is disposed on the top surface F1 of the housing 10, and the fan scroll 25b is located between the radiator fan 21b and the top surface F1. A first side (not shown, reference may be made to the first side 251 of the fan volute 25a of the first fan assembly) of the fan volute 25b communicates with the radiator fan 21b, a second side (not shown, reference may be made to the first side 252 of the fan volute 25a of the first fan assembly) communicates with the cavity 13 of the housing 12, and a third side (not shown, reference may be made to the first side 253 of the fan volute 25a of the first fan assembly) communicates with the exhaust duct 22 b. For example, the first and second sides are opposite to each other in the y-direction, and the third side is located between the first and second sides of the fan volute 25b and on the side of the fan volute 25b away from the inverter device 3. In the embodiment of the present disclosure, the blower volute 25b is respectively communicated with the heat dissipation blower 21b, the exhaust duct 22b and the cavity 13, so that when the heat dissipation blower 21b works, the gas in the cavity 13 is favorably discharged from the exhaust duct 22 b.

For example, the exhaust duct 22b includes an outlet 23b and an outlet cover 24 b. For example, the air outlet 23b has the same orientation as the air outlet 23a of the second outlet assembly 20b, and also faces away from the housing 12, for example, the top of the convertible. The air outlet 23b is arranged in the same direction as the air outlet 23a of the second air outlet assembly 20b, so that the interference or influence on the inverter device 3 or the inverter heat dissipation device 4 can be avoided, and the heat dissipation effect of the inverter heat dissipation device 4 on the inverter device 3 is further ensured.

In the all-in-one variable speed machine provided by the above embodiment, in the process of dissipating heat from the driving device 1 by using the air-cooled heat dissipation mechanism 2A, the heat dissipation fans 21a and 21b are turned on, at this time, the heat dissipation fans 21a and 21b suck the air in the cavity 13 into the fan volutes 25a and 25b, and the air is discharged towards the top of the all-in-one variable speed machine through the air outlets 23a and 23b of the exhaust ducts 22A and 22b (as shown by black thick arrows in fig. 2), so that the heat dissipation and temperature reduction effects on the motor 10 can be achieved through the flow of the air.

In at least some embodiments, a drain may be provided at the bottom of the exhaust duct. For example, as shown in fig. 3, the exhaust duct 22a is provided with a water outlet 26a near the bottom of the housing 13, and the exhaust duct 22b is provided with a water outlet 26b near the bottom of the housing 13. The discharge ports 26a, 26b are configured to discharge liquid (e.g., rainwater, etc.) flowing into the exhaust duct 22 a. Further, for example, a guide tube, such as a hose or a pipe, may be connected to the discharge ports 26a, 26b to guide the discharged liquid to a collection device, such as a water collection tank, so as to avoid the influence on the driving device caused by the liquid directly dropping from the discharge ports.

In the case of rainstorm, it is likely that rainwater infiltrates into the exhaust ducts 22a, 22b and accumulates on the bottoms of the exhaust ducts 22a, 22 b. If the time is too long, accumulated water possibly flows back to the fan turbine, and the heat dissipation effect of the fan heat dissipation mechanism on the driving device is influenced. In the embodiment of the disclosure, the water outlets 26a and 26b are arranged at the bottoms of the exhaust ducts 22a and 22b, so that accumulated water in the exhaust ducts 22a and 22b can be discharged, and the influence of the accumulated water on the heat dissipation effect is reduced or even eliminated.

For example, as shown in fig. 2, 3 and 7, the air-cooled heat dissipation mechanism 2A further includes an air inlet assembly 30, and the air inlet assembly 30 is disposed on the other side of the housing 13, for example, the second side S2, different from the first side. In the embodiment of the present disclosure, the number of the air inlet assemblies 30 may be one or more. When the air-cooled heat dissipation mechanism 2A includes a plurality of air inlet components, the total amount of air sucked into the driving device 1 can be increased, and the heat dissipation efficiency can be improved.

For example, as shown in fig. 2, the air-cooled heat dissipation mechanism 2A includes a first air intake assembly 30a and a second air intake assembly 30b, and the first air intake assembly 30a and the second air intake assembly 30b are arranged side by side along the x direction on the second side S2 of the housing 13. For example, the first air intake assembly 30a is proximate the second end E2 of the housing 13 and distal the first end E1 of the housing 13; the second air intake assembly 30b is proximate to the first end E1 of the housing 13 and distal to the second end E2 of the housing 13. By arranging the first and second air intake assemblies 30a and 30b at the first and second ends E1 and E2 of the housing 13, respectively, the space at the bottom of the housing can be fully and reasonably utilized, and a better heat dissipation effect can be achieved.

For example, as shown in fig. 3, the first air intake assembly 30a includes two air intakes 31a disposed on the second side S2 of the housing. Further, two air inlets 31a are opened side by side on the bottom surface F2 of the casing 12, for example, in the z direction. In the embodiment of the present disclosure, the number of the air inlets 31a may be one or more. When the first air inlet assembly 30a includes the plurality of air inlets 31a, the heat dissipation effect to the driving device 1 can be enhanced.

For example, as shown in fig. 3, the second air intake assembly 30b includes two air intakes 31b disposed on the second side S2 of the housing. Further, two air inlets 31b are opened side by side on the bottom surface F2 of the casing 12, for example, in the z direction. In the embodiment of the present disclosure, the number of the air inlets 31b may be one or more. When the second air intake assembly 30b includes the plurality of air intakes 31b, the heat dissipation effect to the driving device 1 can be enhanced.

In the all-in-one variable speed drive provided by the above embodiment, in the process of dissipating heat from the drive device 1 by using the air-cooled heat dissipation mechanism 2A, when the heat dissipation fans 21a and 21b are turned on, the outside air can be sucked into the cavity 13 through the two air inlets 31a and 31b on the bottom surface F2 of the housing 12 (as shown by the thick black arrows in fig. 2), the temperature of the motor 10 disposed in the cavity 13 is reduced, and then the air is exhausted from the exhaust ducts 22A and 22b by the suction action of the heat dissipation fans 21a and 21 b. It should be noted that the air drawn into the cavity 13 may pass through the internal cavity 150 (see fig. 11) of the stator 15, thereby achieving a heat dissipation effect for the motor 10.

In at least some embodiments, the first and second air intake assemblies 30a, 30b can have the same structure or different structures. When the first and second air introduction assemblies 30a and 30b have the same structure, the manufacturing process can be simplified.

In the embodiment of the present disclosure, an example is given in which the first air inlet assembly 30a and the second air inlet assembly 30b have the same structure, and in the embodiment of the present disclosure, only the first air inlet assembly 30a is described, and the first air inlet assembly 30a may be referred to for specific structure and arrangement of the second air inlet assembly 30b, which are not described herein again.

FIG. 7 is an enlarged bottom schematic view of the integrated transaxle of FIG. 3. As shown in fig. 7, for example, the first air intake assembly 30a further includes two grooves 32a opened on the second side S2 of the housing 12. Each groove 32a is recessed inwardly in the direction of the motor 10. The two grooves 32a correspond to the two air inlets 31a one-to-one, that is, each air inlet 31a is disposed in one groove 32 a.

For example, as shown in fig. 7, the first air inlet assembly 30a further includes two protective nets 33a, and the two protective nets 33a correspond to the two air inlets 31a one-to-one, that is, each protective net 33a covers one air inlet 31 a. If the air inlet 31a is not provided with a protective net, external impurities may be sucked into the cavity. By arranging the protective net on the air inlet, external impurities can be prevented from being sucked into the cavity 13 of the shell 12, so that the heat dissipation effect is prevented from being influenced.

For example, as shown in fig. 2 and 7, the plane P1 in which each protection net 33a is located is not coplanar with the outer portion or the entire surface P of the casing 12, and the plane P1 in which the protection net 33a is located is closer to the motor 10 than the outer surface P of the casing 12. That is, the entire bottom surface of the housing 12 is not in the same plane. When the integrated variable speed machine is applied to wellsite equipment such as an electrically driven fracking vehicle, the bottom of the drive unit 1 needs to be placed on the electrically driven fracking vehicle, i.e., the bottom surface of the housing 12 will be in contact with the electrically driven fracking vehicle. By arranging the plane P1 on which the protection net 33a is located closer to the motor 10 than the outer surface P of the casing 12, it is facilitated for the outside air to flow into the cavity 13 from the bottom of the driving device 1 through the air inlet 31a more smoothly, thereby ensuring that more air is sucked into the cavity 13 during heat dissipation.

FIG. 8 is a schematic structural diagram of a variator according to another embodiment of the disclosure. For example, fig. 8 is a left side view of another embodiment of the integrated transaxle of the present disclosure, which is from the same perspective as the left side view of the integrated transaxle of fig. 1.

As shown in fig. 8, the all-in-one variable speed machine provided by at least one embodiment of the present disclosure includes a driving device 1, a driving heat dissipation device 2, an inverter device 3, and an inverter heat dissipation device 4. Wherein, the air-cooled heat dissipation mechanism 2B is adopted by the driving heat dissipation device 2. The air-cooled heat dissipation mechanism 2B includes a third air outlet assembly 20c, a fourth air outlet assembly 20d and an air inlet assembly 30.

In fig. 8, the detailed structure and arrangement of the driving device 1, the inverter device 3, the inverter heat sink 4, and the air inlet assembly 30 can refer to the description of the foregoing embodiments, and are not repeated herein.

The difference between the variable speed all-in-one machine shown in fig. 8 and the variable speed all-in-one machine shown in fig. 1 is that the air-cooling heat dissipation mechanism 2B shown in fig. 8 includes a third air outlet assembly 20c and a fourth air outlet assembly 20d, which have the same structure but different air outlet directions.

As shown in fig. 8, the third air outlet assembly 20c includes a radiator fan 21c, an exhaust duct 22c, and a fan volute 25 c. The exhaust duct 22c includes an outlet 23c and an outlet cover 24 c. The fourth air outlet assembly 20d includes a heat dissipation fan 21d, an exhaust duct 22d, and a fan volute 25 d. The exhaust duct 22d includes an outlet 23d and an outlet cover 24 d. The air outlet direction of the air outlet duct 22c of the third air outlet assembly 20c is different from the air outlet direction of the air outlet 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 shown by black arrows at the air outlets 23c and 23d in fig. 8, the air outlet 23c faces, for example, the upper left direction, and the air outlet 23d faces, for example, the upper right direction.

Although the air outlets 23c, 23d have different orientations, since both are blowing air towards the headspace of the integrated variable speed drive, when the integrated variable speed drive is applied to wellsite equipment such as electrically driven fracking vehicles, the heat dissipation effect of the two electrically driven fracking vehicles is not affected even if the lateral spacing between the two electrically driven fracking vehicles is small.

As shown in fig. 8, the radiator fan 21c is disposed on the top surface F1 of the casing 10 with the fan scroll 25c between the radiator fan 21c and the top surface F1. A first side 261 (e.g., an upper side as viewed in the drawing) of the fan scroll 25c communicates with the radiator fan 21c, a second side 262 (e.g., a lower side as viewed in the drawing) communicates with the cavity 13 of the casing 12, and a third side 263 (e.g., a right side as viewed in the drawing) communicates with the exhaust duct 22 c. For example, the first side 261 and the second side 262 are opposite 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 a side of the fan volute 25c away from the fan volute 25 d. In the embodiment of the present disclosure, the blower volute 25c is respectively communicated with the heat dissipation blower 21c, the exhaust duct 22c and the cavity 13, so that when the heat dissipation blower 21c works, the gas in the cavity 13 is favorably discharged from the exhaust duct 22 c.

As shown in fig. 8, the radiator fan 21d is disposed on the top surface F1 of the casing 10 with the fan scroll 25d between the radiator fan 21d and the top surface F1. A first side 271 (e.g., an upper side as shown in the drawing) of the fan scroll 25d communicates with the radiator fan 21d, a second side 272 (e.g., a lower side as shown in the drawing) communicates with the cavity 13 of the casing 12, and a third side 273 (e.g., a left side as shown in the drawing) communicates with the exhaust duct 22 d. For example, the first and second sides 271, 272 are opposite each other in the y-direction, and the third side 273 is located between the first and second sides 271, 272 and on a side of the fan volute 25d away from the fan volute 25 c. In the embodiment of the present disclosure, the blower volute 25d is respectively communicated with the heat dissipation blower 21d, the exhaust duct 22d and the cavity 13, so that when the heat dissipation blower 21d works, the gas in the cavity 13 is favorably discharged from the exhaust duct 22 d.

In the all-in-one speed changing machine provided in the above embodiment, in the process of dissipating heat of the driving device by using the air-cooled heat dissipating mechanism 2B shown in fig. 8, the heat dissipating fans 21c and 21d are turned on, so that the outside air can be sucked into the cavity 13 through the air inlet assembly 30 disposed at the bottom of the driving device 1, and the motor 10 disposed in the cavity 13 is cooled. Then, the air is exhausted from the air outlet 23c of the exhaust duct 22c and the air outlet 23d of the exhaust duct 22d by the suction action of the heat dissipation fans 21a and 21b, thereby achieving the cooling and heat dissipation effects on the motor 10.

Similar to fig. 1, the third wind outlet assembly 20c, the fourth wind outlet assembly 20d, the upwind device and the upwind heat sink of fig. 8 are disposed on the same side of the casing 12, for example, on the same top surface F1. The third air outlet assembly 20c, the fourth air outlet assembly 20d, the inverter and the upwind heat dissipation device are arranged on the same side of the shell 12, so that the space occupied by the driving heat dissipation device, the inverter and the inverter on the speed change all-in-one machine is further saved, and the whole volume of the speed change all-in-one machine is reduced.

FIG. 9 is a perspective view of a variator according to another embodiment of the disclosure. Fig. 10 is a schematic structural view of the integrated transaxle of fig. 9.

As shown in fig. 9 and 10, the all-in-one variable speed machine provided by at least one embodiment of the present disclosure includes a driving device 1, a driving heat sink 2, an inverter device 3, and an inverter heat sink 4.

In fig. 9, the detailed structure and arrangement of the driving device 1, the inverter device 3 and the inverter heat sink 4 can refer to the description of the previous embodiment, and are not repeated herein.

The difference between the all-in-one gear change machine of fig. 9 and fig. 1 is that the drive heat sink 2 of fig. 9 dissipates heat in a coolant heat dissipation manner to the drive device 1, and in this case, the drive heat sink 2 includes only the coolant heat dissipation mechanism 2C. In the all-in-one variable speed machine shown in fig. 9, the inverter heat sink 4 and the driving heat sink 2 both adopt a cooling liquid heat dissipation mode.

At least a portion of the coolant heat dissipation mechanism 2C is disposed on the same side of the housing 12 of the drive device 1 as the upwind device 3 in at least some embodiments. For example, as shown in fig. 9 and 10, the coolant heat dissipation mechanism 2C includes a first cooling unit, a first coolant storage unit 202, and a first fan unit 203. The first coolant storage assembly 202, the first fan assembly 203, the upwind device 3, and the upwind heat sink 4 are disposed on the same side of the housing 12 (e.g., the first side S1 of the housing 12 as shown), such as the same top surface F1. By arranging the first cooling liquid storage assembly 202, the first fan assembly 203, the inverter device 3 and the upwind heat dissipation device 4 on the same side of the shell 12, the space occupied by the driving heat dissipation device 2, the inverter device 3 and the inverter heat dissipation device 4 on the speed change all-in-one machine is saved, and the whole volume of the speed change all-in-one machine is reduced.

For example, as shown in fig. 9, the first cooling fluid 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 a side of the first coolant storage assembly 202 away from the housing 12. The first cooling fluid storage assembly 202 includes a motor cooling fluid storage chamber 221 in communication with the first cooling assembly for storing cooling fluid and providing motor cooling fluid to the first cooling assembly. Here, the motor coolant refers to a coolant for cooling the drive device 1.

For example, as shown in fig. 10, the motor coolant storage chamber 221 includes an input end 221i and an output end 221 o. The first cooling assembly is disposed in the housing 12 and includes a first cooling channel 201. The first cooling channel 201 includes a first cooling channel inlet connected to the output end 221o of the motor coolant storage chamber 221 and a first cooling channel outlet connected to the input end 221i, and the first cooling channel 201 is used to deliver the motor coolant to the motor 10.

For example, the first cooling passage 201 includes a first cooling pipe 211, a second cooling pipe 212, a third cooling pipe 213, a first connection sub-pipe 214, and a second connection sub-pipe 215. Each of the first cooling pipe 211, the second cooling pipe 212, the third cooling pipe 213, the first connection sub-pipe 214, and the second connection sub-pipe 215 is configured to convey a motor coolant.

For example, the first cooling pipe 211 is connected to the output end 221o of the motor coolant storage chamber 221 through the first connection sub-pipe 214; the second cooling pipe 212 is connected to an input end 221i of the motor coolant storage chamber 221 through a second connection sub-pipe 215. The third cooling pipe 213 is located between the first cooling pipe 211 and the second cooling pipe 212 and connected to both the first cooling pipe 211 and the second cooling pipe 212. Thus, the motor coolant in the motor coolant storage chamber 221 may flow back to the motor coolant storage chamber 221 after passing through the first connection sub-pipe 214, the first cooling pipe 211, the third cooling pipe 213, the second cooling pipe 212, and the second connection sub-pipe 215 in this order. In the flowing process of the first cooling channel 201, the motor cooling liquid takes away the heat generated by the motor 10 by means of heat exchange, so as to cool the motor 10.

In at least some embodiments, the number of the third cooling pipes 213 may be one or more, and when a plurality of third cooling pipes 213 are provided, the cooling effect on the motor 10 may be enhanced.

Fig. 11 is a schematic cross-sectional view of a stator in a drive device according to an embodiment of the present disclosure. For example, fig. 11 is a cross-sectional schematic view of the stator 15 of the motor 10 of fig. 9. In fig. 9 to 11, the motor includes an output shaft 14, a stator 15 and a rotor 16, and the detailed structures of the output shaft 14, the stator 15 and the rotor 16 and the arrangement manner of the output shaft, the stator 15 and the rotor 16 in the driving device can refer to the description of the previous embodiment, and are not described again here.

For example, the electric machine 10 includes a stator 15, the stator 15 including a body portion 151 and stator windings 152, the stator 15 defining an internal cavity 150. The rotor 16 is disposed in the interior 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, the inner side C1 and the outer side C2 being opposed to each other in the radial direction of the stator 15. The stator winding 152 is provided on the inner side C1 of the body part 151, and the plurality of third cooling pipes 213 are provided on the outer side C2 of the body part 151.

For example, the plurality of third cooling pipes 213 are provided in a part or all of the peripheral portion of the outer side C2 of the body part 151. When the plurality of third cooling pipes 213 are disposed in the entire peripheral portion of the outer side C2 of the body part 151, the heat exchange area of the motor coolant may be increased, enhancing the heat dissipation effect.

For example, the plurality of third cooling pipes 213 are disposed in an equally or unequally spaced manner in the entire peripheral portion of the body part 151. When the plurality of third cooling pipes 213 are disposed at equal intervals in the entire peripheral portion of the outer side C2 of the body part 151, the uniformity of heat dissipation can be improved, further ensuring the overall heat dissipation effect.

For example, as shown in fig. 9 and 10, 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 the first fan assemblies 203 may be one or multiple, and a person skilled in the art may determine the specific number of the first fan assemblies 203 according to the area of the first cooling liquid storage assembly 202, which is not limited in the embodiment of the disclosure.

For example, the first fan assembly 203 includes a first heat dissipation fan 204 and a first heat dissipation motor 205. The first heat dissipation motor 205 is disposed on a side of the motor coolant storage chamber 221 away from the housing 12, and the first heat dissipation fan 204 is disposed between the first heat dissipation motor 205 and the motor coolant storage chamber 221. When the first heat dissipation motor 205 works, the impeller of the first heat dissipation fan 204 is driven to rotate, and the wind generated by the rotation of the impeller is utilized to cool the motor coolant in the motor coolant storage assembly 202 (e.g., the motor coolant storage chamber 221).

In the all-in-one gear shifting machine provided by the above embodiment, in the process of dissipating heat of the driving device 1 by using the air-cooled heat dissipation mechanism 2C, the motor coolant flows into the first cooling pipe 211, the third cooling pipe 213 and the second cooling pipe 212 from the motor coolant storage chamber 221 through the first connection sub-pipe 214, and in the flowing process, the motor coolant takes away heat generated by the motor 10 in a heat exchange manner, so that cooling and heat dissipation of the motor 10 are realized. After the motor coolant exchanges heat with the motor 10, the motor coolant with the increased temperature flows back to the motor coolant storage chamber 221 through the second connection sub-pipe 215. Because the motor cooling liquid can be recycled, the production cost is reduced, the waste water discharge is reduced, and the environmental pollution is avoided.

In at least some embodiments, because the driving device 1 employs a cooling fluid heat dissipation method, the housing 12 does not need to be provided with an opening communicated with the exhaust duct, compared with an air cooling heat dissipation method, and therefore, the housing 12 is substantially closed, and communication between the inside and the outside of the housing is isolated. When the situation such as explosion occurs outside the driving device 1, the possibility of explosion of the motor 10 is reduced, and therefore the explosion-proof function of the motor is achieved. Because the inversion device 3 adopts a cooling liquid heat dissipation mode, the inversion device 3 also realizes the explosion-proof function, and the integral explosion-proof effect of the frequency conversion all-in-one machine is further improved.

Fig. 12 is a perspective view of a shift dome according to yet another embodiment of the present disclosure. Fig. 13 is a schematic structural view of the integrated transaxle of fig. 12.

As shown in fig. 12 and 13, the all-in-one variable speed machine provided by at least one embodiment of the present disclosure includes a driving device 1, a driving heat dissipation device, an inverter device 3, and an inverter heat dissipation device. Wherein, the inversion heat abstractor and the drive heat abstractor both adopt a cooling liquid heat dissipation mode.

The difference between the variable speed integrated machine of fig. 12 and 9 is that the inversion heat sink and the drive heat sink of fig. 12 share a first coolant storage assembly and a first fan assembly.

For example, as shown in fig. 12 and 13, the drive device 1 includes a motor 10 and a housing 12 for housing the motor 10. The inverter device 3 is disposed on a first side S1, e.g., a top surface F1, of the housing, the inverter device 3 being electrically connected to the motor 10. For the specific structure of the motor 10 and the housing 12, reference may be made to the description of the previous embodiments, and further description is omitted here.

For example, the inverter device 3 may cover a part of the top surface F1 or the entire top surface F1. When the inverter device 3 covers the entire top surface F1, the heat dissipation area of the inverter heat sink can be increased, and the heat dissipation efficiency can be improved. When the inverter device 3 covers a part of the top surface F1, it is advantageous to install additional devices on the housing, such as adding an air-cooled heat dissipation mechanism (e.g., the embodiment shown in fig. 22 below).

For example, the inverter heat sink includes an inverter cooling plate 441 (also referred to as a water cooling plate) disposed on a side of the inverter device 3 away from the case 10. For example, the inverter cooling plate 441 includes an inverter cooling channel 451. For the specific structure of the inversion cooling plate 441 and the inversion cooling channel 451, reference may be made to the description of the inversion cooling plate 41 and the inversion cooling channel 51 in the previous embodiment, and the description thereof will not be repeated.

For example, as shown in fig. 13, the driving heat sink includes a first cooling channel 401, a common first cooling fluid storage assembly C202, and a common first fan assembly C203. At least a portion of the first cooling passage 401 is disposed in the cavity 13 defined by the housing 12. For example, the first cooling passage 401 includes a first cooling pipe 411, a second cooling pipe 412, and a third cooling pipe 413, wherein the third cooling pipe 413 is one or more. For example, a plurality of third cooling pipes 413 are provided in the stator 15 of the motor 10. For the specific structure and arrangement of the third cooling pipe 413, reference may be made to the above description of the third cooling pipe 213, and further description is omitted here.

For example, the common first coolant storage component C202 is disposed on the side of the inverter cooling plate 441 away from the case 12. The common first cooling liquid storage module C202 includes a common first cooling liquid storage chamber C221 for storing the cooling liquid and supplying the cooling liquid to the first cooling channel 401 and the inverter cooling plate 441.

For example, the common first coolant storage chamber C221 includes an input end C221i and an output end C221 o. One end of the first cooling passage 401 communicates with an output end C221o of the common first cooling-liquid storage chamber C221, and the other end communicates with an input end C221 i. The coolant flowing out of the output end C221o of the common first coolant storage chamber C221 passes through the first cooling pipe 411, the third cooling pipe 413, and the second cooling pipe 412 in this order, and finally returns to the common first coolant storage chamber C221 through the input end C221 i.

For example, one end of the inversion cooling channel 451 is communicated with the output end C221o of the common first cooling liquid storage chamber C221, and the other end is communicated with the input end C221 i. The coolant flowing out from the output end C221o of the common first coolant storage chamber C221 cools and cools the inverter device 3 while passing through the inverter cooling channel 451, and finally returns to the common first coolant storage chamber C221 through the input end C221 i.

It should be noted that the flow directions of the cooling liquid shown in all the drawings of the present disclosure are only schematic, and in actual production, the flow directions may be opposite, and the embodiments of the present disclosure do not limit this.

For example, the common first fan assembly C203 is disposed on a side of the common first coolant storage assembly C202 away from the housing 12. The common first fan assembly C203 includes a common first heat dissipation fan C204 and a common first heat dissipation motor 205.

For example, the common first heat dissipation motor C205 is disposed on a side of the common first cooling-liquid storage chamber C221 away from the housing 12, and the common first heat dissipation fan C204 is disposed between the common first heat dissipation motor C205 and the common first cooling-liquid storage chamber C221. When the common first heat dissipation motor C205 works, the impeller of the common first heat dissipation fan C204 is driven to rotate, and the cooling liquid in the common first cooling liquid storage chamber C221 is cooled by the wind generated by the rotation of the impeller.

Only four common first fan assemblies C203 are shown in fig. 12. It is to be understood that the number of the common first fan assemblies C203 may be one, or may be multiple, and a person skilled in the art may determine the specific number of the common first fan assemblies C203 according to the area of the common first cooling liquid storage chamber C221, which is not limited by the embodiment of the disclosure.

In the all-in-one variable speed machine provided by the above embodiment, the inverter device 3, the inverter cooling plate 441, the common first cooling liquid storage component C202 and the common first fan component C203 are all disposed on the same side of the casing 12. Through the arrangement mode, the space occupied by the driving heat dissipation device, the inversion device and the inversion heat dissipation device on the speed change integrated machine is saved, and the whole volume of the speed change integrated machine is reduced.

In the speed change all-in-one machine provided by the embodiment, the first cooling liquid storage component C202 and the first fan component C203 are shared, so that the volumes of the driving heat dissipation device and the inversion heat dissipation device can be reduced, the two heat dissipation devices are more compact in structure, and the overall anti-explosion function of the speed change all-in-one machine is improved.

In at least some embodiments, the first cooling channel 401 disposed in the electric machine 10 and the inverter cooling channel 415 disposed in the inverter cooling plate 441 may be connected in parallel or in series. The person skilled in the art can determine this according to the actual need. The two connection modes are described below with reference to specific examples.

Fig. 14 to 19 schematically show connection block diagrams of examples of the first cooling channel and the inverter cooling channel connected in parallel.

As shown in fig. 14 to 19, the first cooling passage 401 includes a first cooling passage inlet 401i and a first cooling passage outlet 401o, the first cooling passage inlet 401i is connected to an output end C221o of the common first cooling liquid storage chamber C221, and the first cooling passage outlet 401o is connected to an input end C221 i.

The coolant flows out from the output end C221o of the common first coolant storage chamber C221 into the first cooling passage 401. When passing through the motor 10, the motor 10 is cooled. Finally, the cooling liquid is returned to the common first cooling liquid storage chamber C221 through the input terminal C221 i.

As shown in fig. 14 to 19, 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 cooling liquid storage chamber C221, and the inverter cooling channel outlet 451o is connected to the input terminal C221 i. The coolant flows out from the output terminal C221o of the common first coolant storage chamber C221 into the inverter cooling channel 451. When passing through the inverter cooling plate 441, the inverter device 3 is cooled. Finally, the cooling liquid is returned to the common first cooling liquid storage chamber C221 through the input terminal C221 i.

As shown in fig. 14 to 19, the common first fan assembly cools and cools the coolant flowing back into the common first coolant storage chamber C221 by the wind generated by the rotation of the impeller (as shown by the arrow of the "air path").

In the all-in-one speed change machine provided by the embodiment, the first cooling channel 401 and the inversion cooling channel 451 are connected in parallel, so that when one cooling channel is damaged, the normal operation of the other cooling channel is not affected, and the all-in-one speed change machine is convenient to maintain or replace.

In at least some embodiments, one or more water pumps may be disposed on the first cooling channel 401 and the inverted cooling channel 451 to increase the flow of the cooling fluid in the inverted cooling channel and the first cooling channel and to enhance the effect of the recirculation flow.

As shown in fig. 14, for example, a first water pump G1 and a second water pump G2 are provided on the first cooling passage 401 and the inverter cooling passage 451, respectively. The first water pump G1 is located on a portion of the first cooling passage 401 between the input end C221i and the motor 10 and upstream of the motor 10 to improve the fluidity of the coolant in the first cooling passage. The second water pump G2 is located on a portion of the inverter cooling passage 451 between the output end C221o and the inverter cooling plate 441 and upstream of the inverter cooling plate 441 to improve the fluidity of the coolant in the inverter cooling passage 451.

As shown in fig. 15, for example, a first water pump G1 and a second water pump G2 are provided on the first cooling passage 401 and the inverter cooling passage 451, respectively. The first water pump G1 is located on a portion of the first cooling passage 401 between the input end C221i and the motor 10 and upstream of the motor 10 to improve the fluidity of the coolant in the first cooling passage. The second water pump G2 is located on a portion of the inverter cooling passage 451 between the output end C221o and the inverter cooling plate 441 and downstream of the inverter cooling plate 441 to improve the fluidity of the coolant in the inverter cooling passage 451.

As shown in fig. 16, for example, a first water pump G1 and a second water pump G2 are provided on the first cooling passage 401 and the inverter cooling passage 451, respectively. The first water pump G1 is located on a portion of the first cooling passage 401 between the input end C221i and the motor 10 and downstream of the motor 10 to improve the fluidity of the coolant in the first cooling passage. The second water pump G2 is located on a portion of the inverter cooling passage 451 between the output end C221o and the inverter cooling plate 441 and upstream of the inverter cooling plate 441 to improve the fluidity of the coolant in the inverter cooling passage 451.

As shown in fig. 17, for example, a first water pump G1 and a second water pump G2 are provided on the first cooling passage 401 and the inverter cooling passage 451, respectively. The first water pump G1 is located on a portion of the first cooling passage 401 between the input end C221i and the motor 10 and downstream of the motor 10 to improve the fluidity of the coolant in the first cooling passage. The second water pump G2 is located on a portion of the inverter cooling passage 451 between the output end C221o and the inverter cooling plate 441 and downstream of the inverter cooling plate 441 to improve the fluidity of the coolant in the inverter cooling passage 451.

As shown in fig. 18, for example, only one first water pump G1 is provided on the first cooling passage 401 and the inverter cooling passage 451. The first water pump G1 is located on a portion of the first cooling passage 401 between the input end C221i and the motor 10 and downstream of the motor 10 to improve the fluidity of the coolant in the first cooling passage. Meanwhile, the first water pump G1 is also located on a portion of the inverter cooling passage 451 between the input end C221i and the inverter cooling plate 441 and downstream of the inverter cooling plate 441 to improve the fluidity of the coolant in the inverter cooling passage 451.

As shown in fig. 19, for example, only one first water pump G1 is provided on the first cooling passage 401 and the inverter cooling passage 451. The first water pump G1 is located on a portion of the first cooling passage 401 between the output end C221o and the motor 10 and upstream of the motor 10 to improve the fluidity of the coolant in the first cooling passage. Meanwhile, the first water pump G1 is also located on a portion of the inverter cooling passage 451 between the output end C221o and the inverter cooling plate 441 and upstream of the inverter cooling plate 441 to improve the fluidity of the coolant in the inverter cooling passage 451.

Compared with the case of using two water pumps in fig. 14 to 17, one water pump is used in fig. 18 and 19, so that the number of used water pumps can be reduced, and the manufacturing cost can be reduced.

Fig. 20 and 21 schematically show connection block diagrams of examples of the first cooling channel and the inverter cooling channel connected in series.

As shown in fig. 20 and 21, the first cooling passage 401 includes a first cooling passage inlet 401i and a first cooling passage outlet 401 o. The inversion cooling channel 451 includes an inversion cooling channel inlet 451i and an inversion cooling channel outlet 451 o. The inversion cooling channel inlet 451i is connected to the output end C221o of the common first cooling liquid storage chamber C221, the inversion 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 end C221 i.

When the coolant flows out from the output end C221o of the common first coolant storage chamber C221, the coolant firstly enters the inversion cooling plate 441 through the inversion cooling channel 451 to cool the inversion device 3; then, the cooling liquid enters the motor 10 through the first cooling channel 401, and cools the motor 10. Finally, the cooling liquid is returned to the common first cooling liquid storage chamber C221 through the input terminal C221 i.

As shown in fig. 20 and 21, the common first fan assembly cools and cools the coolant flowing back into the common first coolant storage chamber by the wind generated by the rotation of the impeller (as indicated by the arrow of the "air path" in the drawing).

In fig. 20 and 21, the cooling fluid enters the inverted cooling channel 451 before entering the first cooling channel 401, it being understood that in other embodiments, the two may be interchanged in sequence. That is, the cooling fluid may first enter the first cooling channel 401 and then enter the inversion cooling channel 451.

In practice, the order of flowing the cooling liquid can be determined according to the amount of heat generated by the heat generating components. For example, the heat generating components that generate less heat may be first passed through the cooling fluid. If the heat generating components generating higher heat are first fed with the cooling liquid, the temperature of the cooling liquid flowing out is higher, and the heat generating components generating lower heat may not be cooled, so that the heat dissipation effect is affected. For example, when the heat generated by the motor is greater than the heat generated by the inverter device, the cooling fluid first enters the inverter cooling channel 451 and then enters the first cooling channel 401, thereby preventing the cooling fluid from being excessively heated to affect the heat dissipation effect of the subsequent components.

FIG. 22 is a perspective view of a variator according to yet another embodiment of the disclosure. As shown in fig. 22, the all-in-one variable speed machine provided by at least one embodiment of the present disclosure includes a driving device 1, a driving heat dissipation device 2, an inverter device 3, and an inverter heat dissipation device 4.

The all-in-one gear shifting machine of fig. 1 and 22 is different in that the driving heat sink 2 of fig. 22 simultaneously radiates heat to the driving device 1 in an air-cooled heat radiation manner and a coolant heat radiation manner, and in this case, the driving heat sink 2 includes an air-cooled heat radiation mechanism and a coolant heat radiation mechanism.

For example, the drive device 1 includes a motor 10 and a housing 12 for accommodating the motor 10. The inverter device 3 is disposed on a first side S1, e.g., a top surface F1, of the housing, the inverter device 3 being electrically connected to the motor 10. For the specific structure of the motor 10 and the housing 12, reference may be made to the description of the previous embodiments, and further description is omitted here.

For example, the inverter heat sink 4 is disposed on a side of the inverter device 3 away from the housing 12. The inverter heat dissipation device 4 includes an inverter cooling plate 541 (also called a water cooling plate), an inverter cooling liquid storage component 542, and an inverter fan component 543. The inverter fan assembly 543 includes a heat dissipation fan 545 and a heat dissipation motor 547. For the specific structure and arrangement of the inverter device 3, the inverter cooling plate 541, the inverter cooling liquid storage component 542, the inverter fan component 543, the heat dissipation fan 545 and the heat dissipation motor 547, reference may be made to the related descriptions of the inverter device 3, the inverter cooling plate 41, the inverter cooling liquid storage component 42, the inverter fan component 43, the heat dissipation fan 45 and the heat dissipation motor 47, which are not further described herein.

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 is communicated with the cavity 13 and disposed at the first side S1 of the housing 12. The air outlet assembly 520 includes a heat dissipation fan 521, an exhaust duct 522 and a fan volute 525, wherein the exhaust duct 522 includes an air outlet 523 and an air outlet cover 524. The wind intake assembly 530 is disposed, for example, on the second side S2 of the housing 12. For the specific structure and arrangement of the air outlet assembly 520 and the air inlet assembly 530, reference may be made to the related description of the air outlet assembly 20 and the air inlet assembly 30 in fig. 1, and details are not repeated herein.

It should be noted that, in order to make room for the coolant heat dissipation mechanism, the air-cooled heat dissipation mechanism in fig. 22 only uses one air outlet assembly 520 to reduce the area occupied by the air outlet assembly on the top surface F1 of the housing 12. It is understood that the wind outlet direction of the wind outlet assembly 520 is not limited to the direction shown in the drawings.

For example, the coolant heat rejection mechanism includes a first cooling assembly (not shown), a first coolant storage assembly 502, and a first fan assembly 503. For the specific structures and arrangement of the first cooling module, the first cooling liquid storage module 502 and the first fan module 503, reference may be made to the related description of the first cooling module, the first cooling liquid storage module 202 and the first fan module 203 in fig. 9, and further description is omitted here.

It should be noted that, compared to the first cooling liquid storage assembly 202 in fig. 9, the first cooling liquid storage assembly 502 in fig. 22 occupies a smaller space on the top surface F1 of the housing 12, which is beneficial for disposing the air outlet assembly 520 on the top surface F1 at the same time.

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 device are disposed on a same side of the housing. For example, as shown in fig. 22, the air outlet assembly 520, the first cooling liquid storage assembly 502, the first fan assembly 503 and the upwind device 3 are disposed on the same side of the casing 12 (e.g., the first side S1 of the casing 12 is shown in the figure). The air outlet assembly 520, the first cooling liquid storage assembly 502, the first fan assembly 503 and the upwind device 3 are arranged on the same side of the shell 12, so that the space occupied by the driving heat dissipation device, the inversion device 3 and the inversion heat dissipation device 4 on the speed change all-in-one machine is saved, and the whole volume of the speed change all-in-one machine is reduced.

In the speed change all-in-one machine provided by the embodiment, the motor 10 is cooled by adopting an air cooling mode and a cooling liquid cooling mode, so that the cooling effect on the motor is enhanced. Especially for high-power equipment such as a motor, a large amount of heat can be generated during working, the heat dissipation effect of the high-power equipment is enhanced, and the normal work of the speed change all-in-one machine is further ensured.

For example, the motor 10 in fig. 22 includes an output shaft extending from the housing 12, a stator, and a rotor. For the specific structures among the output shaft, the stator and the rotor and the arrangement of the output shaft, the stator and the rotor in the driving device, reference is made to the description of the previous embodiments, and the description is omitted here.

For example, when the motor 10 is cooled by both an air-cooling heat dissipation method and a coolant heat dissipation method, the rotor may be cooled by air, and the stator may be cooled by coolant.

For example, in fig. 22, when the heat dissipation fan 521 is turned on, the external air may be drawn into the cavity 13 through the air inlet assembly 30 on the bottom surface F2 of the casing 12, and the air drawn into the cavity 13 may pass through the internal cavity 150 (see fig. 11) of the stator 15, thereby achieving a heat dissipation effect on the motor 10. Then, the air is exhausted from the exhaust duct 522 by the suction action of the heat dissipation fan 521.

For example, the first cooling assembly of fig. 22 may include a first cooling channel 201 as in fig. 10 and 11, at least a portion of the first cooling channel 201 being disposed in the stator in a direction parallel to the output shaft. Thus, when the first cooling channel is filled with the cooling liquid, the cooling liquid flows through the stator body, and the heat dissipation effect on the stator is achieved.

In at least some embodiments, when the motor 10 is cooled by both air-cooling and cooling-fluid cooling, the inverter heat sink 4 and the driving heat sink 3 may share the first cooling-fluid storage assembly 502 and the first fan assembly 503. In the shared state, the specific structures and arrangement manners of the first cooling liquid storage assembly 502, the first fan assembly 503, the inverter device 3, and the inverter heat sink device 4 can refer to the related descriptions in fig. 12 to fig. 13, and are not described again here.

Further, in the case of sharing the first cooling fluid storage module 502 and the first fan module 503, the first cooling channel provided in the motor 10 and the inverter cooling channel provided in the inverter cooling plate may be connected in parallel or in series. The person skilled in the art can determine this according to the actual need. The two connection modes are described below with reference to specific examples.

Fig. 23 to 24 schematically show connection block diagrams of examples of the first cooling channel and the inverter cooling channel connected in parallel when heat is radiated to the motor simultaneously in an air-cooled heat radiation manner and a coolant heat radiation manner.

As shown in fig. 23 and 24, in the case of sharing the first cooling liquid storage assembly and the first fan assembly, the first cooling channel 501 may be provided in the motor 10 of fig. 22, and the inverter cooling channel 551 may be provided in the inverter cooling plate 541 of fig. 22. For the specific structure and arrangement of the first cooling channel 501 and the inversion cooling channel 541, reference may be made to the foregoing description of the first cooling channel 401 and the inversion cooling channel 541, and details are not repeated here.

For example, the common first cooling liquid storage assembly includes a common first cooling liquid storage chamber, which is denoted by reference numeral C521, and the specific structure of the common first cooling liquid storage chamber C521 and the common first fan assembly can refer to the description of the common first cooling liquid storage chamber C221 and the common first fan assembly C203, which is not repeated herein.

As shown in fig. 23 and 24, the first cooling passage 501 includes a first cooling passage inlet 501i and a first cooling passage outlet 501o, the first cooling passage inlet 501i communicating with the output end C521o of the common first cooling-liquid storage chamber C521, and the first cooling passage outlet 501o communicating with the input end C521 i. The coolant flows out from the output end C521o of the common first coolant storage chamber C521 into the first cooling passage 501. When passing through the stator 15 of the motor 10, the stator 15 of the motor 10 is cooled. Finally, the coolant flows back to the common first coolant reservoir chamber C521 through the input end C521 i.

As shown in fig. 23 and 24, the inversion cooling channel 551 includes an inversion cooling channel inlet 551i and an inversion cooling channel outlet 551o, the inversion cooling channel inlet 551i communicates with the output end C521o of the common first cooling liquid storage chamber C521, and the inversion cooling channel outlet 551o communicates with the input end C521 i. The coolant flows out from the output end C521o of the common first coolant storage chamber C521 into the inversion cooling passage 551. When passing through the inverter cooling plate 541, the inverter device 3 is cooled. Finally, the coolant flows back to the common first coolant reservoir chamber C521 through the input end C521 i.

As shown in fig. 23 and 24, the common first fan assembly cools and cools the coolant flowing back into the common first coolant storage chamber C521 by the wind generated by the rotation of the impeller (see the arrow of "wind path" passing through C521 in the figure). Meanwhile, due to the suction action of the heat dissipation fan 521 in the air outlet assembly 520, the outside air can be sucked into the motor 10 and flows out of the exhaust duct 522 through the rotor 16, thereby cooling the rotor 16 of the motor 10 (as shown by the arrow of "air path" passing through the rotor 16).

In at least some embodiments, one or more water pumps may be disposed on the first cooling channel 501 and the inversion cooling channel 551 to increase the fluidity of the cooling fluid in the inversion cooling channel and the first cooling channel and to enhance the effect of recirculation.

For example, as shown in fig. 23, a first water pump G1 and a second water pump G2 are provided on the first cooling passage 501 and the inverter cooling passage 551, respectively. The first water pump G1 is located on a portion of the first cooling passage 501 between the input end C521i and the motor 10 and upstream of the motor 10 to improve the fluidity of the coolant in the first cooling passage. The second water pump G2 is located on a portion of the inverter cooling passage 551 between the output end C521o and the inverter cooling plate 541 and upstream of the inverter cooling plate 541 to improve the fluidity of the coolant in the inverter cooling passage 551.

For example, the first water pump G1 may be disposed at a position indicated by a dashed box in fig. 23 with G1, and the second water pump G2 may be disposed at a position indicated by a dashed box in fig. 23 with G2. The specific location can refer to the description related to fig. 15 to 17, and is not described herein again.

For example, as shown in fig. 24, only one first water pump G1 is provided on the first cooling passage 501 and the inverter cooling passage 551. The first water pump G1 is located on a portion of the first cooling passage 501 between the input end C521i and the motor 10 and downstream of the motor 10 to improve the fluidity of the coolant in the first cooling passage. Meanwhile, the first water pump G1 is also located on a portion of the inverter cooling passage 551 between the input end C521i and the inverter cooling plate 541 and downstream of the inverter cooling plate 541 to improve the fluidity of the coolant in the inverter cooling passage 551. Compare in using two water pumps, adopt a water pump can reduce the use quantity of water pump, reduce manufacturing cost.

For example, the first water pump G1 may also be provided at the position indicated by the dashed box labeled G1 in fig. 24. The specific location can refer to the related description in fig. 19, and is not described herein again.

Fig. 25 schematically shows a connection block diagram of an example of the first cooling channel and the inverter cooling channel connected in series when the motor is radiated with the air-cooling radiation manner and the coolant radiation manner at the same time.

As shown in fig. 25, the first cooling passage 501 includes a first cooling passage inlet 501i and a first cooling passage outlet 501 o. The inversion cooling channel 551 includes an inversion cooling channel inlet 551i and an inversion cooling channel outlet 551 o. The inversion cooling channel inlet 551i communicates with the output end C521o of the common first cooling liquid storage chamber C521, the inversion cooling channel outlet 551o communicates with the first cooling channel inlet 501i, and the first cooling channel outlet 501o communicates with the input end C521 i.

When the cooling liquid flows out from the output end C521o of the shared first cooling liquid storage chamber C521, the cooling liquid firstly enters the inversion cooling plate 541 through the inversion cooling channel 551 to cool the inversion device 3; then, the cooling water enters the stator 15 of the motor 10 through the first cooling channel 501, and the stator 15 of the motor 10 is cooled. Finally, the coolant flows back to the common first coolant reservoir chamber C521 through the input end C521 i.

In the example of fig. 25, the cooling fluid first enters the inversion cooling channel 551 and then the first cooling channel 501, it being understood that in other embodiments, the two may be interchanged in sequence. That is, the cooling fluid may first enter the first cooling channel 501 and then enter the inversion cooling channel 551. In actual production, the specific sequence of the two can be determined according to the magnitude of the generated heat of the heat generating component, and the foregoing description can be referred to specifically.

For example, the first water pump G1 may also be provided at the position indicated by the dashed box labeled G1 in fig. 25. The specific location can refer to the related description in fig. 20, and is not described herein again.

At least one embodiment of the present disclosure also provides wellsite equipment comprising the variable speed integrated machine of any of the previous embodiments, the wellsite equipment comprising at least one of electrically driven fracturing equipment and electrically driven cementing equipment.

Fig. 26 is a schematic structural diagram of an electrically driven fracturing apparatus provided in accordance with an embodiment of the present disclosure. As shown in fig. 26, for example, the electrically driven fracturing equipment provided by at least one embodiment of the present disclosure is an electrically driven fracturing semitrailer, including: the semi-trailer body 91, the radiator 92, the speed changing integrated machine 93, the plunger pump 94, the junction box 95, the local control box 96, the transmission 97, the high-pressure system 98 and the low-pressure system 99. The shift integrated machine 93 is connected to the plunger pump 94 through a transmission 97, and the radiator 92 cools the lubricating oil of the plunger pump 94.

In the electrically-driven fracturing equipment provided by the embodiment, the speed change all-in-one machine 93 described in any one of the previous embodiments is used on the electrically-driven fracturing semitrailer, so that the heat dissipation function of the motor and the inverter is realized, the structure of the speed change all-in-one machine 93 is more compact, the occupied space of the speed change all-in-one machine 93 on the semitrailer is reduced, the weight of a vehicle is reduced, the form cost of the vehicle is reduced, and the electrically-driven fracturing equipment is more flexible and convenient to transport during actual use.

In the electrically-driven fracturing equipment provided by the embodiment, the motor and the inverter are integrated, so that the electrically-driven fracturing semitrailer can reach a working state only by connecting a group of power cables and auxiliary cables to the power supply equipment, and the wiring is simpler and quicker. For example, the power supply device may provide power rectified by a rectifier transformer from a high-voltage power source, or may provide power rectified directly from a generator.

For example, the transmission 97 may employ at least one or at least two of a transmission shaft, a coupling, and a clutch. For example, the transmission 97 may be directly connected to the plunger pump 94, or may be connected to the plunger pump through a gear box, so as to achieve a higher torque input, and the plunger pump has an increased input torque and outputs a higher discharge pressure. Gearboxes include, but are not limited to, reduction gearboxes, transfer cases, and the like.

The gear box can be integrated with other equipment or arranged independently according to different use environments. For example, when applied to electrically driven fracturing equipment, the gearbox may be integrated into the plunger pump. When applied to electrically driven cementing equipment, a multi-stage gearbox, for example a two-stage gearbox, may be provided in the transmission and plunger pump, thereby increasing torque through multi-stage transmission, reducing speed.

For example, the axis of the coupling and the axis of the plunger pump may or may not coincide. When the axes of the two are not coincident, the coupling can adopt a flexible or elastic coupling.

For example, the plunger pump 94 is a five-cylinder plunger pump, and the power thereof is 5000hp or more. The power density of the single-vehicle power system is improved, the power density of the single-vehicle power system in a unit area is improved, and a precondition is provided for reducing the occupied area of the whole well site.

For example, the integrated gear change mechanism 93 has a power of 3000KW or more. The power of the speed changing integrated machine 93 is matched with the power of the plunger pump 94, so that the speed regulating integrated machine 93 can normally drive the plunger pump 94.

For example, the junction box 95 is connected to the shift gate 93, and the junction box 95 may be on the side of the vehicle or the rear of the vehicle. The junction box 95 may be bolted or quick connector connections. In the embodiment of the disclosure, the electrically-driven fracturing semitrailer can reach a working state only by connecting a group of power cables and auxiliary cables to the power supply equipment, the wiring is simpler, and the wiring installation is quicker.

In the speed change all-in-one machine and the well site equipment thereof provided by the embodiment of the disclosure, the inversion heat dissipation device is utilized for dissipating heat of the inversion device, and the driving heat dissipation device is utilized for dissipating heat of the driving device, so that continuous work of the driving device and the inversion device in the well site at normal temperature is effectively ensured. At least one part of the driving heat dissipation device and the inverter device are arranged on the same side of the shell, so that the space occupied by the driving heat dissipation device and the inverter device on the speed change all-in-one machine is saved, and the whole volume of the speed change all-in-one machine is reduced. When the integrated variable speed machine with smaller overall volume is applied to well site equipment, the overall volume of the integrated variable speed machine is reduced, and the occupied space of the integrated variable speed machine on the well site equipment is also reduced, so that more space guarantee can be provided for installing other devices on the well site equipment. When at least a portion of the drive heat sink and the inverter are disposed on the top surface of the housing, the side space is unaffected by the wellsite equipment since it occupies the top space, and the heat sink effect of the two wellsite equipment is unaffected even if the lateral spacing between the two wellsite equipment is small.

Herein, the following points need to be noted:

(1) the drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.

(2) Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.

The above is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present disclosure, and shall be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (20)

1. An all-in-one variable speed machine comprising:

a driving device including a motor and a housing for accommodating the motor;

the inverter device is arranged on the shell and is electrically connected with the motor;

the inversion heat dissipation device is arranged on one side of the inversion device, which is far away from the shell, and is configured to dissipate heat of the inversion device in a cooling liquid heat dissipation manner;

a drive heat sink at least partially disposed on the housing and configured to dissipate heat from the drive in at least one of a coolant heat dissipation manner and an air-cooled heat dissipation manner;

wherein at least a portion of the driving heat sink and the inverter are disposed on the same side of the housing.

2. The variable speed all-in-one machine of claim 1, wherein the housing defines a cavity that houses the motor, the drive heat sink comprising:

the air-cooled heat dissipation mechanism comprises an air outlet assembly communicated with the cavity, and the air outlet assembly and the inverter are arranged on the same side of the shell.

3. The variable speed all-in-one machine according to claim 2, wherein the air cooling and heat dissipating mechanism comprises at least two air outlet assemblies, and the air outlet directions of the at least two air outlet assemblies are the same as each other or different from each other.

4. The variable speed all-in-one machine of claim 2, wherein the air outlet assembly comprises:

the heat radiation fan is arranged on the shell;

a fan volute disposed between the heat dissipation fan and the housing; and

an exhaust duct;

the first side of the fan volute is communicated with the heat dissipation fan, the second side of the fan volute is communicated with the cavity, the third side of the fan volute is communicated with the exhaust duct, the motor comprises an output shaft, and the first side and the second side are opposite to each other in the direction perpendicular to the output shaft;

wherein the heat dissipation fan is configured to draw gas within the cavity into the fan volute and the gas is exhausted through the exhaust duct.

5. The variable speed all-in-one machine of claim 4, wherein the exhaust duct comprises:

the air outlet faces to the direction far away from the shell; and

an outlet cover rotatably coupled to the outlet and configured to cover the outlet.

6. The variator of claim 2, wherein:

the motor comprises an output shaft, the output shaft extends out of the shell, the shell comprises a first side and a second side which are opposite to each other in the direction vertical to the output shaft, and the air outlet assembly and the inverter device are arranged on the first side of the shell;

the air-cooled heat dissipation mechanism further comprises:

the air inlet assembly comprises an air inlet arranged on the second side of the shell, and the air inlet is configured to be communicated with the cavity so that air entering the cavity from the air inlet passes through the motor and then is discharged from the air outlet assembly.

7. The variable speed all-in-one machine of claim 6, wherein the air intake assembly further comprises:

the groove is arranged on the second side of the shell, and the air inlet is arranged in 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.

8. The variator of claim 1, wherein the drive heat sink comprises:

the cooling liquid heat dissipation mechanism, the cooling liquid heat dissipation mechanism includes:

a first cooling assembly disposed in a cavity defined by the housing that houses the electric machine;

a first fan assembly disposed on the housing; and

a first cooling fluid storage assembly disposed between the first fan assembly and the housing, the first cooling fluid storage assembly in communication with the first cooling assembly and configured to provide cooling fluid to the first cooling assembly, the first fan assembly configured to dissipate heat from the cooling fluid in the first cooling fluid storage assembly;

wherein the first cooling liquid storage assembly, the first fan assembly and the inverter are all disposed on the same side of the housing.

9. The variator of claim 8, wherein:

the inversion heat dissipation device and the driving heat dissipation device share the first cooling liquid storage assembly and the first fan assembly;

the inversion heat dissipation device comprises an inversion cooling plate arranged on one side, far away from the shell, of the inversion device, the shared first fan assembly is arranged on one side, far away from the shell, of the inversion cooling plate, and the shared first cooling liquid storage assembly is arranged between the shared first fan assembly and the inversion cooling plate.

10. The variator of 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 common first coolant storage assembly, the common first fan assembly, the inverter device, and the inverter cooling plate are all disposed on a first side of the housing, and the inverter device covers a part or all of an outer surface of the first side of the housing.

11. The variator of claim 9, wherein:

the inverter heat dissipation device comprises:

an inversion cooling channel disposed in the inversion cooling plate and including an inversion cooling channel inlet and an inversion cooling channel outlet;

the first cooling assembly includes:

a first cooling channel, at least a portion of which is disposed in the electric machine and which 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 comprising:

an output end that outputs the coolant to the inversion cooling channel and the first cooling channel;

an input to receive the coolant returned from the inversion cooling channel and the first cooling channel;

the inlet of the inversion cooling channel and the inlet of the first cooling channel are respectively connected with the output end, and the outlet of the inversion cooling channel and the outlet of the first cooling channel are respectively connected with the input end.

12. The variator of claim 9, wherein:

the inverter heat dissipation device comprises:

an inversion cooling channel disposed in the inversion cooling plate and including an inversion cooling channel inlet and an inversion cooling channel outlet;

the first cooling assembly includes:

a first cooling channel, at least a portion of which is disposed in the electric machine and which 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 comprising:

an output end that outputs the coolant to the inversion cooling channel and the first cooling channel;

an input to receive the coolant returned from the inversion cooling channel and the first cooling channel;

the inlet of the inversion cooling channel is connected with the output end, the outlet of the inversion cooling channel is connected with the inlet of the first cooling channel, and the outlet of the first cooling channel is connected with the input end.

13. The variator of claim 1, wherein:

the driving heat dissipation device comprises an air-cooled heat dissipation mechanism and a cooling liquid heat dissipation mechanism;

at least one part of the air-cooled heat dissipation mechanism, at least one part of the cooling liquid heat dissipation mechanism and the inverter are arranged on the same side of the shell.

14. The variator of claim 13, wherein:

the housing defining a cavity that houses the electric machine;

the air-cooled heat dissipation mechanism includes: the air outlet assembly is communicated with the cavity;

the cooling liquid heat dissipation mechanism includes:

a first cooling assembly disposed in a cavity defined by the housing that houses the electric machine;

a first fan assembly disposed on the housing; and

a first cooling fluid storage assembly disposed between the first fan assembly and the housing, the first cooling fluid storage assembly in communication with the first cooling assembly and configured to provide cooling fluid to the first cooling assembly, the first fan assembly configured to dissipate heat from the cooling fluid in the first cooling fluid storage assembly;

the air outlet assembly, the first cooling liquid storage assembly, the first fan assembly and the inverter are arranged on the same side of the shell.

15. The gearshift combo of claim 14, wherein:

the motor comprises an output shaft, a stator and a rotor, wherein the output shaft extends out of the shell;

the first cooling assembly includes: a first cooling passage, 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 comprises: the air inlet assembly comprises an air inlet arranged on the shell, and the air inlet is configured to be communicated with the cavity so that the air entering the cavity from the air inlet is discharged from the air outlet assembly through the rotor.

16. The gearshift combo of claim 14, wherein:

the inversion heat dissipation device and the driving heat dissipation device share the first cooling liquid storage assembly and the first fan assembly;

the inversion heat dissipation device comprises an inversion cooling plate arranged on one side, far away from the shell, of the inversion device, the shared first fan assembly is arranged on one side, far away from the shell, of the inversion cooling plate, and the shared first cooling liquid storage assembly is arranged between the shared first fan assembly and the inversion cooling plate.

17. The variator of claim 16, wherein:

the inverter heat dissipation device comprises:

an inversion cooling channel disposed in the inversion cooling plate and including an inversion cooling channel inlet and an inversion cooling channel outlet;

the first cooling assembly includes:

a first cooling channel, at least a portion of which is disposed in the electric machine and which 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 comprising:

an output end that outputs the coolant to the inversion cooling channel and the first cooling channel;

an input to receive the coolant returned from the inversion cooling channel and the first cooling channel;

the inlet of the inversion cooling channel and the inlet of the first cooling channel are respectively connected with the output end, and the outlet of the inversion cooling channel and the outlet of the first cooling channel are respectively connected with the input end.

18. The variator of claim 16, wherein:

the inverter heat dissipation device comprises:

an inversion cooling channel disposed in the inversion cooling plate and including an inversion cooling channel inlet and an inversion cooling channel outlet;

the first cooling assembly includes:

a first cooling channel, at least a portion of which is disposed in the electric machine and which 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 comprising:

an output end that outputs the coolant to the inversion cooling channel and the first cooling channel;

an input to receive the coolant returned from the inversion cooling channel and the first cooling channel;

the inlet of the inversion cooling channel is connected with the output end, the outlet of the inversion cooling channel is connected with the inlet of the first cooling channel, and the outlet of the first cooling channel is connected with the input end.

19. The variator of 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;

wherein at least a portion of the drive heat sink, the inverter device, and the inverter heat sink are disposed on a top surface of the housing.

20. Wellsite equipment comprising the variable speed integrated machine of any one of claims 1-19.

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