CN215498790U

CN215498790U - Efficient energy-saving equipment for three-phase asynchronous motor

Info

Publication number: CN215498790U
Application number: CN202121066811.3U
Authority: CN
Inventors: 张玉鹏
Original assignee: Zhejiang Baoneng Huineng Energy Saving Technology Co ltd
Current assignee: Zhejiang Baoneng Huineng Energy Saving Technology Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2022-01-11
Anticipated expiration: 2031-05-18

Abstract

A three-phase asynchronous motor high-efficiency energy-saving device relates to the technical field of motor energy saving; the energy-saving device comprises a device body and a movable door arranged at the front end of the device body, wherein a display panel and a control panel are arranged on the upper part of the movable door, a shutter is embedded into the lower part of the movable door, a mounting frame is arranged inside the device body, a plurality of transverse plates are arranged at the left end of the mounting frame, energy-saving mechanisms are arranged on the upper side and the lower side of each transverse plate, and a control operation circuit and an inverter are respectively arranged at the upper end and the lower end of each energy-saving mechanism, so that a motor can always run in the most economical state, and the energy conservation and consumption reduction can be realized to the maximum extent; when the power supply frequency of the motor is changed, the change of the exciting current is caused, so that the motor has insufficient or over-strong excitation; the most economical shaft power is matched with the motor through the control operation circuit and the signal detection circuit, the input power of the motor can be automatically adjusted according to the load rate of the motor, and the power operation of the motor under the optimal load rate is ensured.

Description

Efficient energy-saving equipment for three-phase asynchronous motor

Technical Field

The utility model relates to the technical field of motor energy conservation, in particular to efficient energy-saving equipment for a three-phase asynchronous motor.

Background

The motor is an equipment for converting electric energy into mechanical energy, and it utilizes the electrified coil to produce rotating magnetic field and act on the rotor to form magnetoelectric power rotating torque, and is mainly applied to hotels, metallurgy iron and steel, chemical industry and mines, if: the system comprises a cooling pump, an air conditioner preheating recovery system, an air supply system, a water pump, an oil pump conveying system and the like.

For an asynchronous motor, the rotating speed and the torque of the motor can be changed by only changing the frequency and the voltage of a power supply, so that the purpose of speed regulation operation is achieved, however, in the actual alternating current speed regulation process, when the power supply frequency of the motor is changed, the internal impedance of the motor is also changed, so that the change of exciting current is caused, the condition that the excitation of the motor is insufficient or too strong is caused, the motor cannot provide enough torque when the excitation of the motor is insufficient, and the magnetic saturation phenomenon of the motor when the excitation is too strong is caused, so that the power factor and the efficiency of the motor are reduced.

Practical contents

The utility model aims to solve the technical problems that when the power supply frequency of a motor is changed, the internal impedance of the motor is changed along with the change of the power supply frequency of the motor, so that the change of exciting current is caused, the condition that the excitation of the motor is insufficient or over-strong occurs, the motor is difficult to provide enough torque when the excitation of the motor is insufficient, and the magnetic saturation phenomenon occurs when the excitation is over-strong, so that the power factor and the efficiency of the motor are reduced.

The purpose and the effect of the utility model are achieved by the following specific technical means:

the utility model provides a high-efficient energy-saving equipment of three-phase asynchronous motor, the power distribution equipment comprises an equipment body, be located the dodge gate that the equipment body front end was seted up, the upper portion of dodge gate is provided with display panel and control panel, the lower part embedding of dodge gate is provided with the shutter, the inside of equipment body is provided with the mounting bracket, and the left end of mounting bracket is provided with installs a plurality of diaphragms, the upper and lower both sides of diaphragm all are provided with energy-saving mechanism, and energy-saving mechanism's upper and lower both ends are installed control operation circuit and dc-to-ac converter respectively, make the motor move under the most economic state all the time, do furthest's energy saving and consumption reduction, still be provided with the spacing groove on mounting bracket and the diaphragm, the inside wire of greatly reduced equipment body stacks in a jumble.

Further preferred embodiments: the energy-saving mechanism mainly comprises: the control arithmetic circuit, the signal detection circuit, the gate pole, the drive isolation circuit, the protection circuit, the external interface circuit and the digital output circuit are integrated together with the filter and the inverter.

Further preferred embodiments: the control operation circuit, the signal detection circuit, the gate pole, the drive isolation circuit, the protection circuit, the external interface circuit and the digital output circuit are respectively positioned on the transverse plate at the upper part.

Further preferred embodiments: the filter and the inverter are respectively positioned on the transverse plate at the lower part.

Further preferred embodiments: the spacing groove evenly is provided with a plurality of on mounting bracket and diaphragm, and the inner wall of spacing groove is provided with the insulating layer.

Further preferred embodiments: the middle part in spacing groove is provided with the movable ball, and the joint has the elastic component between the inner wall in movable ball and spacing groove to the movable ball is made by rubber, silica gel material.

Has the advantages that:

(1) the operating circuit and the signal detection circuit are controlled, the most economical shaft power is matched for the motor according to the change of the operating curve of the motor, the input power of the motor can be automatically adjusted according to the load rate of the motor, the motor is ensured to operate at the optimal power under the optimal load rate, the copper loss, the iron loss, the stray loss and the additional loss of the motor are reduced, the operating efficiency of the motor is greatly improved, the purpose of greatly saving electricity is achieved, and the energy-saving effect is remarkable;

(2) the inverter and the motor are connected in the same circuit, energy can be exchanged between two loads through the principle of power inversion, and the power required by the motor can be partially provided by the power output by dynamic difference, so that the load of the total power supply is reduced and the aim of saving energy is fulfilled;

(3) the operation and effective control are carried out by controlling the operation circuit, the corresponding most economical voltage amplitude, the current magnitude and the power factor are adjusted by tracking the load rate in real time according to the unit working condition and the process requirement, the amplitude of the output alternating fundamental wave voltage is controlled by changing the width of the output rectangular pulse, the voltage transformation and the voltage regulation are simultaneously realized on the inverter by a control method of modulating the periodic output frequency, the control method is simplified, the control characteristic is improved, the power saving rate is fully extended, the dynamic characteristic of the motor is remarkably improved, and the automatic control adjustable power supply is realized.

Description of the drawings:

fig. 1 is an overall front perspective view of the present invention.

Fig. 2 is an overall front plan view of the present invention.

Fig. 3 is a front perspective partial schematic view of the mounting bracket of the present invention.

FIG. 4 is a schematic plan view of a limiting groove of the present invention

In FIGS. 1-4: 1-equipment body, 101-movable door, 102-louver, 103-display panel, 104-control panel, 2-mounting rack, 201-transverse plate, 202-limiting groove, 203-elastic piece, 204-insulating layer, 205-movable ball, 3-control operation circuit, 301-signal detection circuit, 302-gate pole, 303-drive isolation circuit, 304-protection circuit, 305-external interface circuit, 306-digital output circuit, 307-filter and 308-inverter.

Detailed Description

As shown in figures 1 to 4:

the utility model provides a high-efficient energy-saving equipment of three-phase asynchronous motor, it includes equipment body 1, is located the dodge gate 101 that the equipment body 1 front end was seted up, and the upper portion of dodge gate 101 is provided with display panel 103 and control panel 104, and the lower part embedding of dodge gate 101 is provided with shutter 102, is provided with mounting bracket 2 in the inside of this equipment body 1, and the left side of mounting bracket 2 is provided with energy-conserving mechanism, makes the motor operate under the most economic state all the time, does furthest energy saving and consumption reduction.

As shown in fig. 2, the left end of the mounting bracket 2 is provided with at least four transverse plates 201, and the upper and lower sides of the transverse plates 201 are provided with energy-saving mechanisms, which mainly comprise: the control arithmetic circuit 3, the signal detection circuit 301, the gate 302, the drive isolation circuit 303, the protection circuit 304, the external interface circuit 305 and the digital output circuit 306 are integrated with the lower filter 307 and the inverter 308 and controlled by a certain control calculation method to realize the optimal energy-saving state, the power-saving rate is 20 to 60 percent higher than that of the common frequency converter, and necessary protection is provided for the asynchronous motor.

As shown in fig. 2, the four horizontal plates 201 divide the interior of the device body 1 into five vertically symmetrical spaces, a first layer is provided with a control operation circuit 3 from top to bottom on the four horizontal plates 201, a second layer is provided with a signal detection circuit 301, a gate 302 and a driving isolation circuit 303, a third layer is provided with a protection circuit 304 and an external interface circuit 305, a fourth layer is provided with a digital output circuit 306 and a filter 307, a fifth layer is provided with at least two inverters 308, the control operation circuit 3, the signal detection circuit 301, the gate 302, the driving isolation circuit 303, the protection circuit 304, the external interface circuit 305 and the digital output circuit 306 are all electrically connected with each other through conducting wires, the load factor of the motor is detected in real time through the control operation circuit 3, data is automatically detected in real time according to the detected load change, and the input voltage and the load current of the motor are automatically adjusted on line by using the filter 307 and the inverter 308, keeping it at the optimum operating point.

As shown in fig. 2-3, the mounting bracket 2 and the transverse plate 201 are provided with a limiting mechanism, the limiting mechanism is composed of a limiting groove 202, the limiting groove 202 is uniformly provided with a plurality of limiting grooves on the mounting bracket 2 and the transverse plate 201, the joint of the mounting bracket 2 and the transverse plate 201 integrally forms a right angle with a cross section of 90 degrees, and the mounting bracket 2 and the transverse plate 201 facilitate the installation of the energy-saving mechanism in the equipment body 1 in a stable manner.

As shown in fig. 4, the insulating layer 204 is closely attached to the inner wall of the limiting groove 202, the insulating layer 204 is made of a nano insulating material, the middle part of the limiting groove 202 is provided with a movable ball 205, the elastic piece 203 is clamped between the inner walls of the movable ball 205 and the limiting groove 202, the movable ball 205 is made of rubber and silica gel, the wire is convenient to limit through the movable ball 205 and the limiting groove 202, disorder of the plurality of wires is avoided, and the movable ball 205 rubber material and the elastic piece 203 are utilized to avoid displacement of the wire in the limiting groove 202.

As shown in fig. 1-2, a plurality of opening has been seted up to the right-hand member of equipment body 1, there is the space between the inner wall right-hand member of equipment body 1 and mounting bracket 2, there is the space front end of mounting bracket 2 and the inner wall front end of equipment body 1, through the opening that equipment body 1 set up, be convenient for dispel the heat to equipment body 1 is inside, and utilize the space between mounting bracket 2 and equipment body 1 right-hand member and the front end, make outside air not with the inside component direct contact of equipment body 1, it is inside to reduce the dust in the outside air to get into equipment body 1.

The working principle is as follows:

the specific use mode and function of this embodiment are that, firstly, the energy saving mechanism is conveniently and stably installed inside the device body 1 by using the mounting frame 2 and the horizontal plate 201 through opening the movable door 101, and the display panel 103, the control panel 104, the control arithmetic circuit 3, the signal detection circuit 301, the gate 302, the driving isolation circuit 303, the protection circuit 304, the external interface circuit 305 and the digital output circuit 306 are all electrically connected with each other through the conducting wires, then the conducting wires are conveniently limited by the movable ball 205 and the limiting groove 202, so as to avoid the disordered stacking of a plurality of conducting wires inside the device body 1, and the conducting wires are prevented from displacing in the limiting groove 202 by using the material of the movable ball 205 and the elastic piece 203, and the danger of electric shock is reduced by using the insulator 204, and then the operation and effective control are carried out through the control arithmetic circuit 3 and the signal detection circuit 301, the load rate of the motor is detected in real time, data are automatically detected in real time according to detected load changes, the operation curve changes of the motor are aimed at, the input voltage and the load current of the motor are automatically adjusted on line by using a filter 307 and an inverter 308 to be kept at the optimal working point, the optimal power operation of the motor under the optimal load rate is ensured, the copper loss, the iron loss, the stray loss and the additional loss of the motor are reduced, the operation efficiency of the motor is greatly improved, the purpose of greatly saving electricity is achieved, the energy-saving effect is obvious, the electricity-saving rate depends on the actual operation efficiency of the motor, the lower the actual operation efficiency of the motor is, the lower the load rate is, the better the energy-saving effect of the equipment body 1 is, the larger the load change of the motor is, the longer the light load duration of the motor is, the better the energy-saving effect of the equipment body 1 is, and then the energy-saving effect of the equipment body 1 is better through a gate 302, The drive isolation circuit 303 and the protection circuit 304 are used for protecting the circuit, and are connected in the same circuit with the motor through the inverter 308, through the principle of power inversion, the mutual exchange of energy between two loads can be realized, and the power required by the motor can be provided with a part by the power output by dynamic difference, so as to lighten the burden of the total power supply and achieve the purpose of energy saving, then the voltage transformation and the voltage regulation are simultaneously realized on the inverter 308 through the control method of modulating the periodic output frequency, the control method is simplified, the control characteristic is improved, the power saving rate is fully extended, the dynamic characteristic of the motor is obviously improved, the adjustable power supply of automatic control is realized, finally, through the opening arranged on the equipment body 1, the heat dissipation is convenient for the inside of the equipment body 1, and the gap between the mounting rack 2 and the right end and the front end of the equipment body 1 is utilized, so that the outside air does not come into direct contact with the elements inside the apparatus body 1, and the entry of dust in the outside air into the inside of the apparatus body 1 is reduced.

Claims

1. The utility model provides a high-efficient energy-saving equipment of three-phase asynchronous motor, includes equipment body (1), be located dodge gate (101) that equipment body (1) front end was seted up, the upper portion of dodge gate (101) is provided with display panel (103) and control panel (104), the lower part embedding of dodge gate (101) is provided with shutter (102), its characterized in that: the inside of equipment body (1) is provided with mounting bracket (2), and the left end of mounting bracket (2) is provided with and installs a plurality of diaphragms (201), the upper and lower both sides of diaphragm (201) all are provided with energy-saving mechanism, and energy-saving mechanism's upper and lower both ends install control operation circuit (3) and dc-to-ac converter (308) respectively, make the motor move under the most economic state all the time, do furthest's energy saving and consumption reduction, still be provided with spacing groove (202) on mounting bracket (2) and diaphragm (201), greatly reduced equipment body (1) inside wire stacks in a jumble.

2. The efficient energy-saving device for the three-phase asynchronous motor according to claim 1, wherein the energy-saving mechanism mainly comprises: the control arithmetic circuit (3), the signal detection circuit (301), the gate (302), the drive isolation circuit (303), the protection circuit (304), the external interface circuit (305), and the digital output circuit (306), and are integrated with the filter (307) and the inverter (308).

3. The efficient energy-saving device for the three-phase asynchronous motor according to claim 2, wherein the control arithmetic circuit (3), the signal detection circuit (301), the gate (302), the drive isolation circuit (303), the protection circuit (304), the external interface circuit (305) and the digital output circuit (306) are respectively positioned on the upper transverse plate (201).

4. The energy efficient device for three-phase asynchronous motors according to claim 2, characterized in that the filter (307) and the inverter (308) are respectively located on the lower cross plate (201).

5. The efficient energy-saving equipment for the three-phase asynchronous motor according to claim 1 is characterized in that a plurality of limiting grooves (202) are uniformly formed in the mounting frame (2) and the transverse plate (201), and an insulating layer (204) is arranged on the inner wall of each limiting groove (202).

6. The efficient energy-saving equipment for the three-phase asynchronous motor according to claim 5 is characterized in that a movable ball (205) is arranged in the middle of the limiting groove (202), an elastic piece (203) is clamped between the movable ball (205) and the inner wall of the limiting groove (202), and the movable ball (205) is made of rubber and silica gel.