Energy-saving device for high-voltage motor based on low-voltage frequency converter

Abstract

The utility model discloses an energy-saving device for a high-voltage motor based on a low-voltage frequency converter, and relates to the technical field of variable frequency motor application. The device comprises an energy-saving unit, a low-voltage frequency converter in the energy-saving unit is fixedly connected to one end of a low-voltage motor, the low-voltage frequency converter is electrically connected with the low-voltage motor, a rotating shaft is rotatably connected to the interiors of a high-voltage motor and the low-voltage motor, and the rotating shaft penetrates through the high-voltage motor; the sides, facing the central axis, of the voltage motor and the low-voltage motor are provided with fixing pieces. And internal rotating shafts of the high-voltage motor and the low-voltage motor are shared. And the high-voltage motor and the low-voltage motor share the same motor shell. A gearbox can be additionally arranged on the outer side of the high-voltage motor according to the actual condition of the rotating speed of the pump. The low-voltage frequency converter in the device does not need a high-power air conditioner for cooling, only a low-power cooling facility is needed, energy consumption is reduced, meanwhile, a high-voltage frequency converter is replaced with the low-voltage frequency converter, the pressure of a pump outlet is reduced, safety is improved, and by optimizing the structure, the failure rate is reduced, and the requirements of users are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to variable frequency motor application technical field, concretely for the energy -conserving device for high voltage motor based on low voltage frequency converter. BACKGROUND

[0002] Normal circumstances, because the starting current is normal production current 5-7 times, the power of motor is greater than 180kw, generally all adopt using high voltage motor to avoid the problem of cable diameter being too large brought by large current. High voltage frequency converter, bulky, complex structure, heat dissipation is big in the use process, needs the air conditioner of high -power cooling, and its energy consumption is high, the failure rate is high. High voltage frequency converter is gradually disabled by the using unit.

[0003] And the reason for this problem is, through high voltage frequency converter drives high voltage motor to rotate, reaches the effect of frequency conversion, but because high voltage frequency converter, the volume is too bulky, complex structure, leading to heat dissipation is big in the use process, needs the air conditioner of high -power cooling, makes its energy consumption is higher, and because the complex structure leads to the failure rate is also high, makes high voltage frequency converter is gradually disabled by the using unit, therefore we propose the energy -conserving device for high voltage motor based on low voltage frequency converter to solve the above -mentioned problem. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiency of prior art, the utility model provides the energy -conserving device for high voltage motor based on low voltage frequency converter, solves the problem that high voltage frequency converter is gradually disabled by the using unit of the high voltage frequency converter, bulky, complex structure, heat dissipation is big in the use process, needs the air conditioner of high -power cooling, its energy consumption is high, the failure rate is high.

[0005] To realize above -mentioned purpose, the utility model passes through following technical scheme to realize: the energy -conserving device for high voltage motor based on low voltage frequency converter, including energy -conserving unit, the energy -conserving unit includes high voltage motor, low voltage motor, low voltage frequency converter and pivot;

[0006] The low voltage frequency converter is fixedly connected at one end of the low voltage motor, the low voltage frequency converter is electrically connected with the low voltage motor, the pivot is rotatably connected in the interior of the high voltage motor and the low voltage motor, and the pivot penetrates the high voltage motor and the low voltage motor, and they share the same pivot.

[0007] The high voltage motor and the low voltage motor are provided with a fixed piece gearbox on the outside of the central axis.

[0008] Preferably, one side of the low voltage motor is provided with a frequency conversion cabinet, the bottom of the low voltage motor is fixedly connected with a wire, the other end of the wire is fixedly connected with the frequency conversion cabinet, and the frequency conversion cabinet is electrically connected with the low voltage motor.

[0009] Preferably, the fixing member comprises a hexagonal column, a sleeve column and a fixing ring;

[0010] The hexagonal column is fixedly connected to one side of the rotating shaft facing the central axis, the sleeve column is movably sleeved on the outer surface of the hexagonal column, and the fixing ring is sleeved on the outer surface of the sleeve column and fixedly connected with the sleeve column.

[0011] Preferably, the fixing member further comprises a sliding block and a guide block;

[0012] The guide block is arranged below the fixing ring, the sliding block is slidingly connected to the inside of the guide block, and the fixing ring is movably clamped in the inside of the sliding block.

[0013] Preferably, the fixing member further comprises a positioning block and a fixing bolt;

[0014] The positioning block is fixedly connected to the two sides of the sliding block, the fixing bolt is rotatably connected to the inside of the positioning block, the fixing bolt is threadedly connected with the positioning block, and the bottom of the fixing bolt abuts against the outer surface of the guide block.

[0015] The green part is replaced by the description of the gearbox

[0016] The utility model discloses a based on low pressure frequency converter for high voltage motor's energy -conserving device, it has the beneficial effect as follows: low voltage frequency converter in the device does not need high -power air conditioner to cool down, has reduced energy consumption, and through low voltage frequency converter replaces high voltage frequency converter simultaneously, makes the pump export pressure drop, has promoted security, and the device has reduced the failure rate through the optimization structure, satisfies the user demand. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0018] Figure 1 It is the overall schematic view of the utility model structure;

[0019] Figure 2 It is the side schematic view of the energy -conserving unit of the utility model;

[0020] Figure 3 It is the explosion drawing of the fixing member of the utility model;

[0021] Figure 4 It is the internal sectional view of the fixing member of the utility model.

[0022] As shown in the figure, 1 is an energy-saving unit, 11 is a high-voltage motor, 12 is a low-voltage motor, 13 is a low-voltage frequency converter, 14 is a rotating shaft, 15 is a wire, 16 is a frequency conversion cabinet, 2 is a fixing piece, 21 is a hexagonal column, 22 is a sleeve column, 23 is a fixing ring, 24 is a sliding block, 25 is a guide block, 26 is a positioning block, and 27 is a fixing bolt. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] The embodiments of the present application provide an energy-saving device for high-voltage motors based on a low-voltage frequency converter, which solves the problems of high-voltage frequency converters, such as large size, complex structure, large heat dissipation during use, the need for high-power air conditioners for cooling, high energy consumption, and high failure rate. The high-voltage frequency converter is gradually disabled by the using unit.

[0025] In order to better understand the above technical scheme, the above technical scheme will be described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0026] The embodiments of the utility model disclose an energy-saving device for high-voltage motors based on a low-voltage frequency converter.

[0027] According to the drawings Figure 1-4 As shown in the figure, 1 is an energy-saving unit, 11 is a high-voltage motor, 12 is a low-voltage motor, 13 is a low-voltage frequency converter, 14 is a rotating shaft, 15 is a wire, 16 is a frequency conversion cabinet, 2 is a fixing piece, 21 is a hexagonal column, 22 is a sleeve column, 23 is a fixing ring, 24 is a sliding block, 25 is a guide block, 26 is a positioning block, and 27 is a fixing bolt.

[0028] The device drives the rotation of the high-voltage motor 11 by controlling the low-voltage motor 12 with the low-voltage frequency converter 13, thereby achieving the effect of frequency conversion. When the low-voltage motor 12 drives the rotation of the high-voltage motor 11, the hexagonal column 21 is clamped inside the sleeve column 22. The low-voltage motor 12 drives the rotation of the rotating shaft 14, so that the hexagonal column 21, the sleeve column 22 and the fixed ring 23 rotate synchronously. When the device needs to be replaced, inspected or repaired, the low-voltage motor 12 is powered off, the fixing bolt 27 is unscrewed, the sliding block 24 is grabbed and slid to one side, the sliding block 24 drives the fixed ring 23 to slide together, so that the sleeve column 22 fixedly connected with the fixed ring 23 also moves together. At this time, the rotating shaft 14 can be repaired without disassembling the motor, which greatly speeds up the repair efficiency. After the repair is completed, the sliding block 24 is grabbed and slid to the original position, the sliding block 24 drives the fixed ring 23 to slide together, so that the sleeve column 22 fixedly connected with the fixed ring 23 also moves together, so that the hexagonal column 21 is clamped into the inside of the sleeve column 22. The fixing bolt 27 is tightened to complete the fixation of the hexagonal column 21, which ensures that the low-voltage motor 12 can drive the rotation of the high-voltage motor 11 and meets the needs of the user.

[0029] The low-voltage frequency converter 13 is fixedly connected to one end of the low-voltage motor 12, and the low-voltage frequency converter 13 is electrically connected to the low-voltage motor 12. The rotating shaft 14 is rotatably connected inside the high-voltage motor 11 and the low-voltage motor 12, and the rotating shaft 14 penetrates through the high-voltage motor 11;

[0030] The high-voltage motor 11 and the low-voltage motor 12 are provided with a fixing part 2 on one side facing the central axis, one side of the low-voltage motor 12 is provided with a frequency conversion cabinet 16, the bottom of the low-voltage motor 12 is fixedly connected with a wire 15, the other end of the wire 15 is fixedly connected with the frequency conversion cabinet 16, the frequency conversion cabinet 16 is electrically connected with the low-voltage motor 12, the fixing part 2 comprises a hexagonal column 21, a sleeve column 22 and a fixing ring 23; the hexagonal column 21 is fixedly connected on one side of the rotating shaft 14 facing the central axis, the sleeve column 22 is movably sleeved on the outer surface of the hexagonal column 21, the fixing ring 23 is sleeved on the outer surface of the sleeve column 22, the fixing ring 23 is fixedly connected with the sleeve column 22, the fixing part 2 further comprises a sliding block 24 and a guide block 25; the guide block 25 is arranged below the fixing ring 23, the sliding block 24 is slidingly connected in the inside of the guide block 25, the fixing ring 23 is movably clamped in the inside of the sliding block 24, the fixing part 2 further comprises a positioning block 26 and a fixing bolt 27; the positioning block 26 is fixedly connected on both sides of the sliding block 24, the fixing bolt 27 is rotatably connected in the inside of the positioning block 26, the fixing bolt 27 is threadedly connected with the positioning block 26, the bottom of the fixing bolt 27 abuts against the outer surface of the guide block 25, the sleeve column 22 is fixedly connected with the fixing ring 23, so that the sleeve column 22 can rotate together with the hexagonal column 21, the sleeve column 22 can drive the fixing ring 23 to rotate, the sleeve column 22 is used to ensure that the rotating shafts 14 on both sides can rotate simultaneously and in the same direction, through the cooperation of the fixing ring 23 and the sliding block 24, the hexagonal column 21 can be quickly locked and loosened, so that the motor does not need to be removed during the maintenance of the rotating shaft 14, the required maintenance time is greatly reduced, the maintenance efficiency is improved, and the fixing part 2 can be effectively prevented from deviating during use through the fixing bolt 27, so as to affect the normal use of the device.

[0031] The green part is replaced by the description of the gearbox, and the subsequent figures are also changed

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. Energy saving device for high voltage motor based on low voltage frequency inverter characterized in that, Including energy-saving unit (1), the energy-saving unit (1) includes high voltage motor (11), low voltage motor (12), low voltage frequency converter (13) and rotating shaft (14); The low voltage frequency converter (13) is fixedly connected at one end of the low voltage motor (12), the low voltage frequency converter (13) is electrically connected with the low voltage motor (12), the rotating shaft (14) is rotatably connected in the high voltage motor (11) and the low voltage motor (12), the rotating shaft (14) penetrates the high voltage motor (11) and the low voltage motor (12); The high voltage motor (11) and the low voltage motor (12) are provided with a fixing part (2) on the outside of the center axis.

2. The energy saving device for high voltage electric machines based on low voltage variable frequency drive as claimed in claim 1 wherein: One side of the low voltage motor (12) is provided with a frequency conversion cabinet (16), the bottom of the low voltage motor (12) is fixedly connected with a wire (15), the other end of the wire (15) is fixedly connected with the frequency conversion cabinet (16), the frequency conversion cabinet (16) is electrically connected with the low voltage motor (12).

3. The energy saving device for high voltage electric machines based on low voltage variable frequency drive as claimed in claim 1 wherein: The fixing part (2) includes a hexagonal column (21), a sleeve column (22) and a fixing ring (23); The hexagonal column (21) is fixedly connected on the side of the rotating shaft (14) towards the center axis, the sleeve column (22) is movably sleeved on the outer surface of the hexagonal column (21), the fixing ring (23) is sleeved on the outer surface of the sleeve column (22), and the fixing ring (23) is fixedly connected with the sleeve column (22).

4. The energy saving device for high voltage electric machines based on low voltage variable frequency drive as claimed in claim 3 wherein: The fixing part (2) further includes a sliding block (24) and a guide block (25); The guide block (25) is arranged below the fixing ring (23), the sliding block (24) is slidably connected in the guide block (25), and the fixing ring (23) is movably clamped in the sliding block (24).

5. The energy saving device for high voltage electric motor based on low voltage variable frequency drive as claimed in claim 3 wherein: The fixing part (2) further includes a positioning block (26) and a fixing bolt (27); The positioning block (26) is fixedly connected on both sides of the sliding block (24), the fixing bolt (27) is rotatably connected in the positioning block (26), the fixing bolt (27) is threadedly connected with the positioning block (26), and the bottom of the fixing bolt (27) abuts against the outer surface of the guide block (25).

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