Permanent magnet high-voltage frequency conversion and speed regulation all-in-one machine

Abstract

The utility model relates to the technical field of motors, in particular to a permanent-magnet high-voltage frequency conversion and speed regulation all-in-one machine. The all-in-one machine comprises an integrated rack, a permanent magnet motor is arranged on the integrated rack, the permanent magnet motor and the integrated rack are integrally arranged, a transformer, a high-voltage frequency converter and a high-voltage cable wiring device are fixedly arranged on one side of the integrated rack, and the high-voltage frequency converter and the high-voltage cable wiring device are fixedly connected. The mining shifting work is saved, the production cost is reduced, and the system maintenance workload is reduced; meanwhile, the all-in-one machine is highly integrated and small in occupied area, frequent moving and reversing of underground narrow roadways are facilitated, the output length of an output cable is reduced, interference is reduced, and the system stability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a permanent magnet high-voltage variable frequency speed regulating integrated machine. Background Art

[0002] When coal mining operations are carried out underground, the traditional belt conveyor is usually driven by a mining mobile transformer + a dual-speed motor + a reducer; it has now developed into a mainstream driving method with a mobile substation + a high-voltage inverter + a permanent magnet synchronous direct-drive motor. This method has little impact on the power grid, can be soft-started, and has an automatic speed regulation function.

[0003] However, the above-mentioned equipment is relatively scattered, occupies a large area, has large mechanical wear and tear, has a large maintenance workload, and has low system efficiency. In the relatively small space underground, the tunnel belt conveyor is often moved upside down, and there are many connecting cables and wires between the equipment, which makes transportation troublesome and costly. Utility Model Content

[0004] The utility model provides a permanent magnet high voltage frequency conversion speed regulation integrated machine, which is used to solve the problems of numerous connection cables and wires between devices, troublesome transportation and relatively high use cost in the prior art.

[0005] In order to solve the above problems, the utility model provides a permanent magnet high voltage variable frequency speed regulating integrated machine, comprising:

[0006] An integrated frame is provided with a permanent magnet motor, the permanent magnet motor is integrated with the integrated frame, a transformer, a high-voltage frequency converter and a high-voltage cable wiring device are fixedly provided on one side of the integrated frame, wherein the high-voltage frequency converter and the high-voltage cable wiring device are fixedly connected.

[0007] In a preferred embodiment, the high-voltage cable wiring device includes a lead terminal, an integrated explosion-proof casing and a wiring terminal, the two ends of the integrated explosion-proof casing are respectively fixedly connected to the lead terminal and the wiring terminal, the lead terminal is fixedly connected to the high-voltage inverter, and a wiring terminal is arranged in the integrated explosion-proof casing, and the wiring terminal is electrically connected to the high-voltage inverter.

[0008] In a preferred embodiment, the wiring terminal is provided with a communication port and a shielded wire access port, the communication port includes a trumpet mouth, a connecting joint, a gasket and a plugging plate, the connecting joint is welded to the integrated explosion-proof casing, the connecting joint is connected to the explosion-proof cavity of the integrated explosion-proof casing, a sealing ring is arranged in the connecting joint, the trumpet mouth is screwed into the connecting joint, the gasket is arranged between the sealing ring and the trumpet mouth, and the plugging plate is arranged on the sealing ring.

[0009] In a preferred embodiment, reinforcing ribs are provided on both sides of the bottom of the integrated frame.

[0010] In a preferred implementation, the high-voltage frequency converter is a direct high-voltage frequency converter.

[0011] The beneficial effects of the utility model are as follows: the utility model provides a permanent magnet high voltage variable frequency speed regulating integrated machine, which has the following beneficial effects:

[0012] 1. The inverter is a direct high-voltage inverter. The 10kV power supply underground can be directly provided to the inverter. There is no need to use a mine-used mobile transformer, which saves the cost of mobile transformers for the mine.

[0013] 2. The frequency converter is integrated on the permanent magnet motor, eliminating the high-voltage cable between the frequency converter and the motor. The volume of the integrated frequency converter and permanent magnet motor is smaller than that of the separate combination of the two. This not only saves the cost of the frequency converter, but also reduces the installation space requirement of the whole machine, and also reduces the interference problem caused by the transmission distance, thus improving the stability of the system.

[0014] 3. The all-in-one machine also integrates a transformer, which is provided for use by on-site equipment such as fans, water pumps, and lighting, meeting various on-site needs in one stop. At the same time, the transformer is installed in an independent cavity to ensure that the heat of the transformer will not affect other components. The transformer cavity can be hung on the left or right side of the all-in-one machine according to on-site needs, with full installation flexibility.

[0015] 4. The all-in-one machine is also equipped with a high-voltage cable wiring device, which can be installed on the left or right side as needed to meet customers' diverse needs for power transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The overall structural diagram of the integrated machine is shown;

[0018] Figure 2 A schematic diagram of the overall structure of the integrated device from another viewing angle is shown;

[0019] Figure 3 The overall structural schematic diagram of the high voltage cable connection device is shown;

[0020] Figure 4 A schematic diagram of the internal structure of the communication port is shown.

[0021] Description of main component symbols:

[0022] 100-integrated frame; 110-permanent magnet motor; 120-transformer; 130-high voltage inverter; 140-reinforcement ribs; 200-high voltage cable wiring device; 210-lead terminal; 220-integrated explosion-proof housing; 230-wiring terminal; 240-communication port; 241-bell mouth; 242-connecting joint; 243-washer; 244-blocking plate; 250-shielded wire access port. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] Embodiment 1

[0029] See also Figure 1-4 The utility model provides a permanent magnet high-voltage frequency conversion speed regulation integrated machine (hereinafter referred to as the integrated machine), which includes an integrated frame 100, on which a permanent magnet motor 110 is arranged, and the permanent magnet motor 110 is integrated with the integrated frame 100. A transformer 120, a high-voltage inverter 130 and a high-voltage cable wiring device 200 are fixedly arranged on one side of the integrated frame 100, wherein the high-voltage inverter 130 and the high-voltage cable wiring device 400 are fixedly connected.

[0030] On the basis of the above scheme, the high-voltage inverter 130 adopts a direct high-voltage inverter, so that the 10kV power supply underground can be directly provided to the inverter for use, without the need to use a mine-used mobile transformer, saving the mobile transformer cost for the mine. At the same time, the all-in-one machine also eliminates the high-voltage cable between the inverter and the motor, and the integrated volume of the high-voltage inverter 130 and the permanent magnet motor 110 is smaller than that of the dispersed combination of the two. It not only saves the cost of the high-voltage inverter 130, but also reduces the installation space requirement of the whole machine, and also reduces the interference problem caused by the transmission distance, thereby improving the stability of the overall system.

[0031] In the above solution, the all-in-one machine also integrates a transformer 120, which can be provided to on-site equipment such as fans, water pumps, and lighting for use, meeting various on-site needs in one stop. At the same time, the transformer 120 is installed in an independent cavity, ensuring that the heat of the transformer 120 will not affect the operation of other components, and the cavity of the transformer 120 can be hung on the left or right side of the all-in-one machine according to on-site needs, with sufficient installation flexibility.

[0032] In the above solution, reinforcing ribs 140 are provided on both sides of the bottom of the integrated frame 100 of the all-in-one machine, thereby improving the stability of the overall device.

[0033] See also Figure 3 and Figure 4On the basis of the above scheme, the high-voltage cable wiring device 200 includes a lead terminal 210, an integrated explosion-proof housing 220 and a wiring terminal 230. The two ends of the integrated explosion-proof housing 220 are fixedly connected to the lead terminal 210 and the wiring terminal 230 respectively. The lead terminal 210 is fixedly connected to the high-voltage inverter 130. The integrated explosion-proof housing 220 is provided with a wiring terminal, which is electrically connected to the high-voltage inverter 130.

[0034] Among them, the connection terminal 230 is provided with a communication port 240 and a shielded wire access port 250, the communication port 240 includes a trumpet mouth 241, a connecting joint 242, a gasket 243 and a plugging plate 244, the connecting joint 242 is welded to the integrated explosion-proof casing 220, the connecting joint 242 is connected to the explosion-proof cavity of the integrated explosion-proof casing 220, a sealing ring is arranged in the connecting joint 242, the trumpet mouth 241 is screwed into the connecting joint 242, a gasket 243 is arranged between the sealing ring and the trumpet mouth 241, and the plugging plate 244 is arranged in the sealing ring, so that the signal shielding line is distinguished from other cables and led out independently, which greatly facilitates the line installation, saves costs, makes inspection and maintenance more convenient, and is more flexible and convenient to use in mines.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A permanent magnet high voltage variable frequency speed regulating integrated machine, characterized in that: include: An integrated frame is provided with a permanent magnet motor, the permanent magnet motor is integrated with the integrated frame, a transformer, a high-voltage frequency converter and a high-voltage cable wiring device are fixedly provided on one side of the integrated frame, wherein the high-voltage frequency converter and the high-voltage cable wiring device are fixedly connected.

2. The permanent magnet high voltage variable frequency speed regulating integrated machine according to claim 1, characterized in that: The high-voltage cable wiring device includes a lead terminal, an integrated explosion-proof casing and a wiring terminal. The two ends of the integrated explosion-proof casing are fixedly connected to the lead terminal and the wiring terminal respectively. The lead terminal is fixedly connected to the high-voltage inverter. A wiring terminal is arranged in the integrated explosion-proof casing, and the wiring terminal is electrically connected to the high-voltage inverter.

3. The permanent magnet high voltage variable frequency speed regulating integrated machine according to claim 2, characterized in that: The wiring terminal is provided with a communication port and a shielded wire access port, the communication port includes a trumpet mouth, a connecting joint, a gasket and a plugging plate, the connecting joint is welded to the integrated explosion-proof casing, the connecting joint is connected to the explosion-proof cavity of the integrated explosion-proof casing, a sealing ring is arranged in the connecting joint, the trumpet mouth is screwed into the connecting joint, the gasket is arranged between the sealing ring and the trumpet mouth, and the plugging plate is arranged on the sealing ring.

4. The permanent magnet high voltage variable frequency speed regulating integrated machine according to claim 1, characterized in that: Reinforcing ribs are arranged on both sides of the bottom of the integrated frame.

5. The permanent magnet high voltage variable frequency speed regulating integrated machine according to claim 1, characterized in that: The high-voltage frequency converter adopts a direct high-voltage frequency converter.

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