A high-pressure integrated machine

Abstract

The present invention discloses a high-voltage all-in-one machine. The high-voltage all-in-one machine includes: a motor mechanism, a transformer mechanism and a frequency converter mechanism; the transformer mechanism includes a transformer housing and a transformer, the frequency converter mechanism includes a frequency converter housing and a frequency converter, the frequency converter is connected to the transformer, the motor mechanism includes a motor housing and a motor, the motor is connected to the frequency converter, the front end of the motor mechanism is used for output, and the rear end thereof is provided with the transformer mechanism; the transformer housing includes a first cylinder, the first end of the first cylinder is open, and the first end is fixedly connected to the rear end of the motor housing. The high-voltage all-in-one machine of the present invention integrates the transformer, the frequency converter and the motor, and can connect the motor to a high-voltage power supply using an ordinary transformer and frequency converter, thereby effectively solving many problems in the prior art regarding high-voltage drive motors, such as large space occupation, high equipment cost, and complex installation.

Description

Technical Field

[0001] The present invention generally relates to the field of motor technology, and more particularly, to a high-voltage integrated machine. Background Art

[0002] Most high-voltage motors in industrial applications are 6kV and above. A hydraulic coupling or other fluid-viscous speed control device is required between the high-voltage drive motor and the equipment it drives to mitigate the electrical and mechanical shocks during direct startup of the high-voltage motor. With the rapid development of frequency conversion technology, variable-frequency drive (VFD) can effectively reduce the shock during motor startup. To address this, high-voltage VFDs with voltage ratings of 6kV and above have been designed for industrial applications, enabling VFD-based drive of high-voltage drive motors of 6kV and above. However, using VFDs with voltage ratings of 6kV and above presents several challenges. First, high-voltage VFDs have a unique structure, consisting of a transformer with a multi-stage output structure that converts high voltage to low voltage. Each stage of the output is then connected to a VFD for frequency conversion. Finally, the multiple VFDs are connected in series to convert the output to high voltage to drive the high-voltage motor. Second, high-voltage VFDs require a high ground withstand voltage, which results in long insulation distances. They typically require a separate room for installation and have strict environmental requirements, including a stable room temperature. Therefore, the room where the high-voltage inverter is installed generally needs to be equipped with air conditioners or fans for heat dissipation. Summary of the Invention

[0003] To address one or more of the above-mentioned problems in the background art, the present invention provides a high-voltage all-in-one unit. This unit integrates a transformer, a frequency converter, and a motor. The transformer is located at the rear of the motor, eliminating the need for a separate room to house the frequency converter. The motor can be driven, thus reducing equipment installation space and facilitating industrial production.

[0004] Specifically, the present invention discloses a high-voltage integrated machine. The high-voltage integrated machine includes: a motor mechanism, a transformer mechanism, and a frequency converter mechanism; the transformer mechanism includes a transformer housing and a transformer, the transformer being assembled in the transformer housing and used to convert high-voltage alternating current into low-voltage alternating current; the frequency converter mechanism includes a frequency converter housing and a frequency converter, the frequency converter being assembled in the frequency converter housing and connected to the transformer and used to perform frequency conversion on the low-voltage alternating current; the motor mechanism includes a motor housing and a motor, the motor being assembled in the motor housing and connected to the frequency converter and used to drive the motor shaft to rotate according to the alternating current output by the frequency converter; the front end of the motor mechanism is used for power output, and the rear end thereof is provided with the transformer mechanism; the transformer housing includes a first cylindrical body, the first end of the first cylindrical body being open, and the first end being fixedly connected to the rear end of the motor housing.

[0005] In one embodiment, the frequency converter mechanism is located on the upper side of the motor mechanism, and the frequency converter mechanism is arranged along the axial direction of the motor.

[0006] In another embodiment, the frequency conversion mechanism includes a water cooling plate provided on the upper side of the motor mechanism, and the water cooling plate is used to dissipate heat from the frequency converter.

[0007] In another embodiment, the transformer housing further includes a wiring chamber provided on the upper side of the first cylinder for accommodating an incoming cable and a power supply cable, wherein the incoming cable is used to connect the transformer and an external high-voltage power supply, and the power supply cable is used to connect the transformer and an inverter.

[0008] In one embodiment, a first incoming wire chamber is provided on a first side of the wiring chamber, and the first side is a side perpendicular to the motor axis; a second incoming wire chamber is provided on a second side of the wiring chamber, and the second side is a side opposite to the first side, and the first incoming wire chamber and the second incoming wire chamber are used to accommodate the incoming wire cables.

[0009] In another embodiment, the first wire inlet chamber is in a closed shape, with the wire inlet facing downward and tilted toward the outside of the first side, and the second wire inlet chamber is in a closed shape, with the wire inlet facing downward and tilted toward the outside of the second side.

[0010] In yet another embodiment, a first cooling water channel is provided on the transformer housing. The first cooling water channel is parallel to the motor axis and is used to dissipate heat for the transformer mechanism.

[0011] In one embodiment, a second cooling water channel is provided on the motor housing. The second cooling water channel is parallel to the motor axis and is used to dissipate heat for the motor mechanism.

[0012] In another embodiment, the first cylinder is coaxial with the motor housing and has the same diameter as the motor housing, the second end of the first cylinder is open, and the second end is provided with a transformer housing end cover.

[0013] In another embodiment, a base structure is further provided on the lower side of the motor mechanism and the transformer mechanism for supporting the high-voltage integrated machine.

[0014] Based on the above-mentioned embodiments, the high-voltage all-in-one machine of the present invention abandons the original "high-voltage frequency converter + high-voltage motor" model, and integrates the transformer, frequency converter and motor into one unit. It is no longer necessary to set up a separate room to install the high-voltage frequency converter. The transformer housing is fixedly connected to the rear end of the motor housing, and the required equipment installation space is relatively small. When wiring the power supply, the number of cables between the external high-voltage power supply and the high-voltage frequency converter, and between the high-voltage frequency converter and the high-voltage motor is saved. Only one power supply cable is needed to directly connect the high-voltage all-in-one machine, which effectively reduces the workload of cable laying. Moreover, the transformer, frequency converter and motor all use conventional equipment, which is relatively simple to manufacture and is conducive to the promotion and application of the product. These advantages of the present invention have better solved many problems existing in the prior art regarding high-voltage drive motors. For example, the high-voltage all-in-one machine of the present invention can achieve the technical advantages of variable frequency drive through conventional equipment and can be applied to industrial applications of various voltage levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above features of the present invention can be better understood by reading the detailed description below with reference to the accompanying drawings, and its numerous objects, features, and advantages will be readily apparent to those skilled in the art. The drawings described below are merely some embodiments of the present invention. It is possible for a person skilled in the art to derive other drawings from these drawings without inventive effort, including:

[0016] Figure 1 is a front view showing a high-voltage integrated machine according to an embodiment of the present invention;

[0017] Figure 2 is a longitudinal sectional view showing a high-pressure integrated machine according to an embodiment of the present invention;

[0018] Figure 3 is a schematic diagram showing the three-dimensional structure of a high-pressure integrated machine according to an embodiment of the present invention, viewed from above;

[0019] Figure 4 is a right side view showing a high-voltage integrated machine according to an embodiment of the present invention;

[0020] Figure 5 is a schematic diagram showing the three-dimensional structure of a high-pressure integrated machine according to an embodiment of the present invention, viewed from an oblique bottom;

[0021] Figure 61 is a schematic diagram showing the arrangement positions of various components in a converter housing of a high-voltage integrated machine according to an embodiment of the present invention;

[0022] Figure 7 Schematic diagram showing the arrangement of cooling water channels in a converter housing of a high-voltage integrated machine according to an embodiment of the present invention;

[0023] Figure 8 1 is a schematic diagram showing the arrangement position of the transformer in the transformer mechanism of the high-voltage integrated machine according to an embodiment of the present invention;

[0024] Figure 9 is a schematic diagram showing the cooling water channels and bolt connection positions in the transformer mechanism of the high-voltage integrated machine according to an embodiment of the present invention;

[0025] Figure 10 is a left side view showing a high-pressure integrated machine according to an embodiment of the present invention;

[0026] Figure 11 3 is a schematic diagram showing a first cooling water channel of a transformer housing of a high-voltage integrated device according to an embodiment of the present invention;

[0027] Figure 12 is a schematic diagram showing the water flow in the first cooling water channel of the high-pressure integrated machine according to an embodiment of the present invention;

[0028] Figure 13 is a schematic diagram showing a second cooling water channel in a motor mechanism of a high-voltage integrated machine according to an embodiment of the present invention; and

[0029] Figure 14 2 is a schematic diagram showing the structure of the rear end cover of the motor housing of the high-voltage integrated machine according to an embodiment of the present invention;

[0030] in Figures 1-14In the figure, motor mechanism 1, motor housing 10, motor 101, motor mechanism front end 11, motor mechanism rear end 12, motor winding 103, second cooling water channel 104, third cooling water channel 105, first rib 106, second rib 107, inverter mechanism 2, inverter housing 20, inverter 201, water cooling plate 202, IGBT module 203, resistor 204, capacitor 205, main control unit 206, drive unit 207, contactor 208, three-phase isolation conversion unit 209, leakage detection device 210, first cover plate 211, second cover plate 212 , third cover plate 213, fourth cover plate 214, water inlet 215, water outlet 216, cooling water channel 217, transformer mechanism 3, transformer housing 30, transformer 301, first cylinder 302, transformer housing end cover 303, first cooling water channel 304, transformer mechanism front end 305, transformer mechanism rear end 306, wiring chamber 4, incoming line chamber 401, incoming line horn mouth 402, first side 403 of the wiring chamber, second side 404 of the wiring chamber, first incoming line chamber 405, second incoming line chamber 406, cable cross section 407, base 5, bracket 6. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] Figure 1 2 is a front view showing a high-voltage integrated machine according to an embodiment of the present invention. Figure 2 is a longitudinal sectional view showing a high-pressure integrated machine according to an embodiment of the present invention, Figure 3 1 is a schematic diagram showing the three-dimensional structure of a high-pressure integrated machine according to an embodiment of the present invention, viewed from above. Figure 4 FIG. 1 is a right side view of a high-voltage integrated machine according to an embodiment of the present invention.

[0033] like Figure 1As shown, the high-voltage integrated machine of the present invention may include a motor mechanism 1, a frequency converter mechanism 2, and a transformer mechanism 3. The motor mechanism 1 includes a motor housing 10 and a motor 101, and the motor 11 is assembled in the motor housing 10. The frequency converter mechanism 2 includes a frequency converter housing 20 and a frequency converter 201, and the frequency converter 201 is assembled in the frequency converter housing 20 to adjust the frequency of the power supply through the switching process of the internal semiconductor power device (such as IGBT). The transformer mechanism 3 includes a transformer housing 30 and a transformer 301, and the transformer 301 is assembled in the transformer housing 30 to convert high-voltage AC power into low-voltage AC power. The aforementioned frequency converter 201 can be connected to the aforementioned transformer 301 to achieve frequency conversion of the low-voltage AC power. For example, 6kV high-voltage power can be converted into low-voltage power. The aforementioned motor can be connected to the aforementioned frequency converter 201, so that the AC power output by the frequency converter 201 drives the motor shaft to rotate. Furthermore, a wiring chamber 4 may be provided to realize the wiring between the inverter 201 and the transformer 301 , and the wiring between the transformer 301 and an external high-voltage power supply.

[0034] In an implementation scenario, such as Figure 2 As shown, when assembling the transformer mechanism 3, the frequency converter mechanism 2 and the motor mechanism 1, the front end 11 ( Figure 1 and Figure 2 The protruding part on the left is the motor output shaft) for power output, the motor winding 103 is set in the middle of the motor housing 10, and at the rear end 12 ( Figure 1 and Figure 2The aforementioned transformer mechanism 3 is arranged on the right side of the motor mechanism 1 in the middle, so that the transformer 301 is arranged at the tail of the motor 101. The aforementioned transformer mechanism 3 includes a transformer mechanism front end 305 and a transformer mechanism rear end 306. The transformer mechanism front end 305 can be connected to the aforementioned motor mechanism rear end 12. For example, a flange is arranged at the front end of the transformer housing, and threaded holes are arranged at corresponding positions of the flange and the motor housing rear end. Then, bolts are passed through the threaded holes to fix the front end of the transformer housing and the rear end of the motor housing together. The aforementioned inverter mechanism 2 is arranged on the upper part of the motor mechanism 1, and a corresponding wiring chamber 4 is arranged on the upper side of the transformer mechanism 3. The wiring chamber 4 can accommodate incoming cables and power cables, wherein the incoming cables are used to connect the external high-voltage power supply and the aforementioned transformer 301, and the power cables are used to connect the aforementioned transformer 301 and the aforementioned inverter 201. For example, the wiring chamber 4 can be connected to at least one incoming cable chamber 401, and the incoming cable chamber 401 can be used to accommodate cables connected to the external high-voltage power supply (i.e., incoming cables). During power supply wiring, the incoming cable can enter the wiring chamber 4 through the aforementioned incoming cable chamber 401 and be connected to the transformer in the transformer housing 30 through the wiring chamber 4. The wiring chamber 4 also contains a power supply cable connecting the transformer 301 and the inverter 201, thereby transmitting the low-voltage power output by the transformer 301 to the inverter 201. The inverter housing 20 can also be provided with an outlet for electrically connecting the inverter 201 to the motor 101.

[0035] Specifically, Figure 3 The figure shows a three-dimensional view of the high-voltage integrated machine in this solution from an oblique top view. Figure 3 As shown, the inverter mechanism 2 can be set on the upper side of the aforementioned motor mechanism 1 and arranged along the axial direction of the motor. In one implementation scenario, the inverter housing 20 in the aforementioned inverter mechanism 2 is fixed to the upper part of the aforementioned motor housing through a supporting structure. In one implementation scenario, as Figure 3 As shown, a rib structure can be provided at the motor housing 10, and the inverter housing 20 can be installed on the rib structure on the upper side of the motor housing. Specifically, a first rib 106 can be installed at the front end of the motor housing, and a second rib 107 can be installed at the rear end of the motor housing. When the inverter mechanism 2 is provided, the inverter housing 20 can be installed on the aforementioned first rib 106 and second rib 107. Since the aforementioned first rib 106 and second rib 107 have better effects in terms of stiffness, strength, stability, insulation, etc., the first rib 106 and second rib 107 are used as mounting parts for the motor mechanism and the inverter mechanism. On the one hand, they can support and protect the motor, and on the other hand, they can improve the stability of the installation of the inverter mechanism and the motor mechanism, and improve the overall stability of the motor.

[0036] In another implementation scenario, the aforementioned inverter mechanism 2 can be set on the upper side of the motor mechanism 1 by setting a bracket 6 on the upper part of the motor housing 10. The inverter housing 20 may include components such as an IGBT module 203, a resistor 204, a capacitor 205, a contactor 208 and a main control unit. The specific composition will be described in detail below and will not be elaborated here. Furthermore, in order to facilitate maintenance, multiple cover plates can be set on the top cover of the inverter housing to correspond to multiple maintenance areas. If a certain area needs to be inspected during maintenance, the cover plate at the corresponding position can be opened to achieve maintenance. For example Figure 3 A first cover plate 211 , a second cover plate 212 , a third cover plate 213 and a fourth cover plate 214 are provided on the top of the inverter housing to divide the inverter into four maintenance areas.

[0037] A transformer housing 30 may be provided at the rear end of the motor housing 10 in the motor mechanism 1. In one implementation scenario, the transformer housing 30 may include a first cylinder 302, with the first end of the first cylinder 302 (corresponding to the front end 305 of the transformer mechanism) opened, and the first end fixedly connected to the rear end of the motor housing. Furthermore, the motor housing 10 may be coaxially arranged with the first cylinder 302, and the diameter of the motor housing 10 may be the same as the diameter of the first cylinder 302. Figure 4 As shown, to ensure the sealing of the high-voltage integrated unit, a transformer housing end cover 303 is provided at the second end of the transformer housing 30 (corresponding to the rear end 306 of the transformer mechanism). Thus, a sealed chamber for mounting the transformer 301 is formed by the rear end of the motor housing 10 and the transformer housing end cover 303. Furthermore, a base 5 is provided under the motor mechanism 1 and transformer mechanism 3 in the high-voltage integrated unit to support the unit.

[0038] When the aforementioned high-voltage all-in-one machine is used for operation, the transformer 301 therein is used to convert the high voltage into a low voltage, and then the frequency converter 201 is used to convert the low voltage to drive the aforementioned motor to operate. In view of this, in the solution of the present invention, the transformer 301 in the high-voltage all-in-one machine can be an ordinary transformer, and the frequency converter 201 no longer requires a high-voltage frequency converter with a special structure. Therefore, through this method of realizing the "high-voltage motor", when the motor is driven, the motor can be connected to the high-voltage power supply using an ordinary transformer and frequency converter, without the need to set up a dedicated high-voltage frequency converter. The product manufacturing is relatively simple and can be widely used in industrial scenarios of various voltage levels. In addition, the designed high-voltage all-in-one machine occupies a small space volume, which is convenient for transportation and installation of the equipment. The above combined Figures 1-4 A brief description of the high-voltage integrated machine structure of the present invention is given below, and the composition of each part will be described in detail.

[0039] Figure 5-Figure 7 It is a schematic diagram showing further details of the inverter mechanism 2 in the high-voltage integrated machine according to an embodiment of the present invention. It should be noted that Figure 5-Figure 7 The inverter mechanism 2 in the Figure 1 An exemplary implementation of the inverter mechanism 2 in the high-voltage integrated machine, and Figure 5-Figure 7 The names of the parts shown in Figure 1 Therefore, combined with Figure 1 The details described for the high-pressure integrated unit also apply to Figure 5-Figure 7 The description of the frequency converter mechanism 2 is omitted and will not be repeated below.

[0040] like Figure 5 As shown, the aforementioned frequency converter mechanism 2 can be arranged on the upper side of the motor mechanism 1, and the frequency converter mechanism can be arranged along the axial direction of the aforementioned motor, so that the frequency converter 201, control components, etc. can be arranged in the axial direction of the motor. At the bottom of the frequency converter housing, a wiring structure for connecting the motor 101 and the frequency converter 201 can also be provided. For example, an outlet can be provided at the bottom of the frequency converter housing, and the outlet of the provided frequency converter can be connected to the terminal of the motor through a conductive structure, thereby realizing the connection between the motor 101 and the frequency converter 201. A wiring port can be provided at a position of the frequency converter mechanism 2 corresponding to the rear end 12 of the motor mechanism for connecting the aforementioned power supply cable. In an implementation scenario, the aforementioned wiring chamber 4 can adopt an independent structure and be installed on the upper side of the aforementioned transformer mechanism. The wiring chamber can also be provided integrally with the aforementioned transformer housing, and a structure having a wiring chamber and a transformer housing can be directly made when making the transformer housing. Furthermore, in order to dissipate heat for the inverter mechanism 2 , a water cooling plate 202 may be provided on the upper side of the motor mechanism 1 to dissipate heat for the inverter mechanism 2 . This will be explained below and will not be described here.

[0041] In an implementation scenario, such as Figure 6As shown, the inverter housing of the inverter mechanism 2 can be provided with a three-phase isolation conversion unit 209 in the power supply circuit of the inverter 201, which is used to isolate and convert the voltage transmitted from the transformer 301, and a contactor 208 is provided to control the power supply circuit. It also includes an IGBT module 203 for frequency conversion, a drive unit 207 for driving the IGBT on or off, a resistor 204, and a capacitor 205, thereby achieving the frequency conversion function. In addition, a main control unit 206 can be provided in the inverter housing. This main control unit 206 can control the drive unit 207 to adjust the frequency conversion parameters of the inverter 201 and can also be connected to various detection devices to implement protection functions for the inverter 201. For example, the main control unit 206 can be connected to a leakage detection device 210 provided in the power supply circuit to control the contactor 208 to disconnect when a leakage occurs, thereby stopping the operation of the motor 101. Alternatively, the main control unit 206 can be connected to several temperature sensors to monitor the temperature of various parts in the high-voltage integrated machine. For example, temperature sensors can be set at positions such as the motor winding 103, the front axle, the rear axle, the transformer 301 and the inverter 201 to realize temperature monitoring of the high-voltage integrated machine.

[0042] Furthermore, in order to effectively dissipate the heat of the inverter 201, a water cooling plate 202 may be provided on the upper side of the motor mechanism 1 to dissipate the heat of the inverter 201. Figure 7 As shown, the water-cooling plate 202 is provided with a water inlet 215, a water outlet 216, and a cooling water channel 217. In one implementation scenario, when installing the water-cooling plate 202, the water-cooling plate 202 can be attached to the outside of the bottom of the motor housing, and the power devices in the inverter 201 can be placed at a position close to the water-cooling plate 202 at the bottom of the inverter housing to dissipate heat for the power devices. In another implementation scenario, the water-cooling plate 202 can also be used as part of the inverter housing. For example, the water-cooling plate 202 can be directly used as the bottom of the inverter housing, so that the power devices in the inverter 201 can be directly placed on the water-cooling plate 202 to improve the heat dissipation effect.

[0043] Figures 8-13 Schematic diagram showing the transformer mechanism 3 in the high voltage integrated machine according to an embodiment of the present invention. It should be noted that: Figures 8-13 The inverter mechanism 2 in the Figure 1 An exemplary implementation of the transformer mechanism 3 in the high-voltage integrated machine, and Figures 8-13 The names of the parts shown in Figure 1 Therefore, combined with Figure 1 The details described for the high-pressure integrated unit also apply to Figures 8-13 The description of the transformer mechanism 3 in FIG. 3 is omitted and will not be repeated below.

[0044] like Figure 8 As shown, the transformer mechanism 3 is arranged at the rear end of the motor mechanism 1, and the transformer housing 30 includes a first cylinder 302. The first cylinder 302 can be coaxially arranged with the motor housing 10 and have the same diameter. The transformer 301 can be installed in the first cylinder 302. Figure 9 As shown, in order to achieve heat dissipation for the transformer 301, a first cooling water channel 304 is further provided in this solution. The distribution form of the first cooling water channel will be described in detail in the following content and will not be explained here for the time being.

[0045] In order to realize the connection between the transformer 301 and the external high-voltage power supply, a connection chamber 4 can be provided on the upper side of the first cylinder 302 of the transformer housing to realize the connection between the transformer 301 and the external high-voltage power supply and the inverter 201. In one implementation scenario, Figure 10 As shown, devices such as high-voltage fuses can be set in the wiring chamber 4, and at least one incoming line chamber 401 can be set outside the aforementioned wiring chamber 4, and the structure of the aforementioned incoming line chamber 401 can be in a closed shape, with the incoming line port facing downward and tilted toward the outside of the motor. This structural design can, on the one hand, prevent water from entering and reduce dirt residue, and on the other hand, facilitate wiring operations and reduce cable bending. Alternatively, in order to facilitate quick assembly, the aforementioned incoming line chamber 401 can also directly adopt the existing high-voltage junction box structure. In an implementation scenario, the aforementioned wiring chamber 401 can, for example, include a first side 403 and a second side 404, and the first side 403 can be a side perpendicular to the motor axis (for example Figure 10 The second side 404 may be a side opposite to the first side 403 (eg Figure 10 A first incoming line chamber 405 may be provided on the first side 403 to facilitate wiring on the first side 403. A second incoming line chamber 406 may be provided on the second side 404 of the wiring chamber to connect the transformer to an external high-voltage power source on the second side 404.

[0046] When the user conveniently selects the left side ( Figure 10 When wiring is done from the left side of the wiring chamber, the incoming cable in the first incoming cable chamber 405 on the left side of the wiring chamber can be used to connect to the external high-voltage power supply, and the position on the right side of the wiring chamber 4 connected to the second incoming cable chamber 406 can be covered with a cover. Figure 10When wiring (on the right side of the middle wiring chamber), the incoming cable in the second incoming chamber on the right side of the wiring chamber can be used to connect to the external high-voltage power supply, and the position on the left side of the wiring chamber connected to the first incoming chamber can be covered with a cover plate, thereby improving the convenience of the incoming wiring of the aforementioned high-voltage integrated machine. Furthermore, the aforementioned wiring chamber can also include a third side 407. For example, the third side 407 can be set at the position of the aforementioned wiring chamber corresponding to the rear end of the motor housing, so as to facilitate external wiring in the direction of the third side 407. Furthermore, a wire inlet horn mouth 402 can be set at the wire inlet of each incoming wire chamber to realize the external wiring setting.

[0047] In one implementation scenario, a first cooling water channel 304 may be provided on the transformer housing 30 to dissipate heat from the transformer 301. Figure 11 As shown, the first cooling water channel 304 can be arranged parallel to the motor axis, so that the first cooling water channel 304 is evenly distributed along the transformer housing to achieve uniform heat dissipation of the entire housing. When coolant is injected from the water inlet of the first cooling water channel 304, a corresponding water flow structure can be formed in the transformer housing. Figure 12 The cross-sectional view corresponding to the transformer housing 30 and the wiring chamber 4 is shown. The multiple ring-shaped structures in the cross-sectional view of the wiring chamber 4 in this cross-sectional view are cable cross-sections 407 (power supply cable cross-sections). The interconnected ring-shaped structures in the cross-sectional view of the transformer housing 30 are the first cooling water channels 304. It can be seen that the various water channels distributed on the transformer housing are interconnected to form an integrated interconnected structure. In this way, only one water inlet and outlet are required to realize the circulation of coolant in the cooling water channel, thereby achieving heat dissipation for the transformer 301. It is understandable that the arrangement of the first cooling water channel in a direction parallel to the motor axis is schematic and not restrictive. Those skilled in the art can select a suitable arrangement according to actual needs, such as a spiral arrangement along the circumference of the first cylinder.

[0048] Figure 13-14 This is a schematic diagram showing the motor cooling structure in the high-voltage integrated machine according to an embodiment of the present invention. It should be noted that: Figure 13-14 The motor mechanism 1 in the figure can be understood as Figure 1 An exemplary implementation of the motor mechanism 1 in the high-voltage integrated machine, and Figure 13-14 The names of the parts shown in Figure 1 Therefore, combined with Figure 1 The details described for the high-pressure integrated unit also apply to Figure 13-14 The description of the motor mechanism in FIG is omitted and will not be repeated below.

[0049] like Figure 13As shown, the motor mechanism 1 includes a motor housing 10 and a motor 101. The front end 11 of the motor mechanism is used for output, and the rear end 12 of the motor mechanism can be connected to the aforementioned transformer mechanism 3. In order to achieve heat dissipation of the motor, a second cooling water channel 104 can be set on the motor housing 10. The aforementioned second cooling water channel 104 can be set in a direction parallel to the aforementioned motor axis, thereby forming a form of multiple cooling water channels parallel to each other on the motor housing 10 to achieve a full range of heat dissipation effect for the motor 101. Further, as Figure 14 As shown, a water cooling structure can also be provided on the end cap at the rear end of the motor housing 10. For example, a third cooling water channel 105 can be provided on the end cap to enhance the heat dissipation of the motor mechanism 1. Furthermore, the first cooling water channel 304, the second cooling water channel 104, and the third cooling water channel 105 can be independent structures, i.e., each cooling water channel forms a separate water path through its own independent water inlet and outlet, and are not connected to each other. Coolant can flow into the inlets of the first cooling water channel 304, the second cooling water channel 104, and the third cooling water channel 105, respectively, and flow out of the outlets of the first cooling water channel 304, the second cooling water channel 104, and the third cooling water channel 105, respectively, to achieve heat dissipation for equipment such as the motor and transformer. The independent provision of each cooling water channel allows the coolant flowing through it to remain at a low temperature for a longer period of time, thereby enhancing the heat dissipation for equipment such as the motor and transformer.

[0050] Alternatively, the cooling water channels in the aforementioned high-voltage integrated unit can be connected in series via rubber hoses. This allows water cooling of multiple components in the aforementioned high-voltage integrated unit by simply filling a single water inlet. For example, at least two of the first cooling water channel 304 in the transformer mechanism 3, the second cooling water channel 104 and the third cooling water channel 105 in the motor mechanism 1, and the cooling water channel in the water-cooling plate 202 of the inverter mechanism 2 can be connected in series via pipes to form a longer cooling water channel, reducing the frequency of connection between the water inlet and outlet and the external water source, and reducing the workload of personnel.

[0051] In summary, the solution of the present invention proposes a structural form in which the water-cooling structure is used as part of the housing, such as making structural improvements on the motor housing and the transformer housing to form cooling water channels for heat dissipation, or directly using the water-cooling plate as the bottom plate of the inverter housing for heat dissipation. Alternatively, those skilled in the art can also directly adopt an independent water-cooling plate structure, such as using a motor water-cooling plate and attaching the motor water-cooling plate to the inside of the motor housing, using a transformer water-cooling plate and attaching the transformer water-cooling plate tightly to the outside of the motor housing, etc. Those skilled in the art can select an appropriate method according to actual needs.

[0052] Based on the above description, it can be understood that the high-voltage integrated device of the present invention effectively overcomes the existing problems of using high-voltage inverters to drive high-voltage motors, such as the large installation space required, complex equipment structure, numerous connecting cables, and high costs. Furthermore, the high-voltage integrated device offers advantages such as a sophisticated design, relatively simple structure, low cost, and easy maintenance.

[0053] It should be understood that when the terms "first," "second," "third," and "fourth" are used in the claims, description, and drawings of the present invention, they are only used to distinguish different objects, rather than to describe a specific order. The terms "comprise" and "comprising" used in the description and claims of the present invention indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0054] It should also be understood that the terminology used in this specification is for the purpose of describing specific embodiments only and is not intended to limit the present invention. As used in the specification and claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should further be understood that the term "and / or" as used in the specification and claims refers to any and all possible combinations of one or more of the associated listed items, including and including these combinations.

[0055] As used in this specification and claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0056] Although the embodiments of the present invention are as described above, the contents are only examples used to facilitate understanding of the present invention and are not intended to limit the scope and application scenarios of the present invention. Any person skilled in the art of the present invention may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be based on the scope defined by the attached claims.

Claims

1. A high-voltage integrated machine, characterized in that: include: Motor mechanism, transformer mechanism and inverter mechanism; The transformer mechanism includes a transformer housing and a transformer, wherein the transformer is assembled in the transformer housing and is used to convert high-voltage alternating current into low-voltage alternating current; The frequency converter mechanism includes a frequency converter housing and a frequency converter, wherein the frequency converter is assembled in the frequency converter housing and connected to the transformer for performing frequency conversion on the low-voltage alternating current; The motor mechanism includes a motor housing and a motor, wherein the motor is assembled in the motor housing and connected to the inverter, and is used to drive the motor shaft to rotate according to the AC power output by the inverter; The front end of the motor mechanism is used for power output, and the rear end thereof is provided with the transformer mechanism; The transformer housing includes a first cylinder, a first end of the first cylinder is open, and the first end is fixedly connected to the rear end of the motor housing; the first cylinder is coaxial with the motor housing and has the same diameter as the motor housing, the second end of the first cylinder is open, and the second end is provided with a transformer housing end cover, and the rear end of the motor housing and the transformer housing end cover form a sealed chamber for mounting the transformer; The transformer housing also includes a wiring chamber arranged on the upper side of the first cylinder, and a first wire incoming chamber is provided on the first side of the wiring chamber, and the first side is a side perpendicular to the motor axis; a second wire incoming chamber is provided on the second side of the wiring chamber, and the second side is a side opposite to the first side, and the first wire incoming chamber and the second wire incoming chamber are used to accommodate incoming cables; the first wire incoming chamber is in a closed shape, and the wire incoming opening is downward and inclined toward the outside of the first side; the second wire incoming chamber is in a closed shape, and the wire incoming opening is downward and inclined toward the outside of the second side; a wire incoming horn is provided at the wire incoming opening of each wire incoming chamber.

2. The high-voltage integrated machine according to claim 1, characterized in that: The frequency converter mechanism is located on the motor mechanism On the other hand, the inverter mechanism is arranged along the axial direction of the motor.

3. The high-voltage integrated machine according to claim 2, characterized in that: The frequency conversion mechanism includes a water cooling plate provided on the upper side of the motor mechanism, and the water cooling plate is used to dissipate heat from the frequency converter.

4. The high-voltage integrated machine according to claim 1, characterized in that: The wiring chamber is used to accommodate an incoming cable and a power supply cable. The incoming cable is used to connect the transformer and an external high-voltage power supply, and the power supply cable is used to connect the transformer and a frequency converter.

5. The high-voltage integrated machine according to claim 1, characterized in that: The transformer housing is provided with a first cooling water channel. The first cooling water channel is parallel to the motor axis and is used to dissipate heat for the transformer mechanism.

6. The high-voltage integrated machine according to claim 5, characterized in that: A second cooling water channel is provided on the motor housing. The second cooling water channel is parallel to the motor axis and is used to dissipate heat for the motor mechanism.

7. The high-voltage integrated machine according to claim 1, characterized in that: A base structure is also provided on the lower side of the motor mechanism and the transformer mechanism for supporting the high-voltage integrated machine.

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