CN202085027U

CN202085027U - Permanently magnetic integrated dragging device

Info

Publication number: CN202085027U
Application number: CN201120207676XU
Authority: CN
Inventors: 刘荣臣
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-11
Filing date: 2011-06-11
Publication date: 2011-12-21
Anticipated expiration: 2021-06-11

Abstract

The utility model relates to a permanently magnetic integrated dragging device composed of a motor, a permanently magnetic coupler and a belt wheel. A magnet guide plate of the permanently magnetic coupler is fixed on a motor shaft. The permanent rotor is fixed on the belt wheel. The dragging device in the utility model has a soft start function and loads are added gradually, thereby providing good buffering start ability for a beam-pumping unit to drive a comparatively high start inertia and torque. The loading capability of the motor can be reduced for two degrees just by the above design and the problem of dragging a small car with a large horse is solved. By using the permanently magnetic integrated dragging device, not only the original investment of the beam-pumping unit is saved, but also the electric power is saved substantially.

Description

The integrated actuator of permanent magnetism

One, technical field:

The utility model relates to actuator, what be specifically related to is the integrated actuator of permanent magnetism.

Two, background technology:

At present, in oil-field oil pumper equipment, beam pumping unit is easy to use, reliable, is recover the oil capital equipment in producing of present oil field, uses the most generally, and quantity is also maximum.This oil pumper is under the dragging of motor and belt pulley, up and down reciprocatingly move via drive sucker rods such as gearbox, horse heads, because by mechanical connection, the load of pumping-unit motor is an one-period property pulsating load, and the impact of moment is arranged during electric motor starting between motor shaft and the belt pulley.In order to guarantee enough big detent torque, oil pumper often needs to be equipped with more powerful motor, but load factor is very low when normally moving, produced " low load with strong power " phenomenon thus, general situation is that the underload rate with 20%～30% is moved behind the electric motor starting, cause power factor low, efficient is low, and waste of energy is big.Simultaneously, because mechanical connection makes the vibrations of motor itself cause the load vibrations, gearbox, oil pumper are caused mechanical shock between motor shaft and the belt pulley.

Three, summary of the invention:

The purpose of this utility model provides the integrated actuator of a kind of permanent magnetism, is used to solve the problem that waste is big, vibrations are big that prior motor and belt pulley mechanical connection cause.

The technical scheme that its technical problem that solves the utility model adopts is: the integrated actuator of a kind of permanent magnetism is made up of motor, permanent magnetic coupling, belt pulley, and the magnetic conductive disk of permanent magnetic coupling is fixed on the motor shaft, and p-m rotor is fixed on the belt pulley.

Permanent magnetic coupling in the such scheme adopts the distance-limiting type magnetic coupling.

Permanent magnetic coupling in the such scheme adopts the speed-regulating type magnetic coupler.

Beneficial effect:

1, the utlity model has soft start function, load progressively loads, for oil pumper provides splendid buffer starting ability, can drive higher startup inertia and moment of torsion, only this can reduce by two ranks of motor installed capacity, has thoroughly solved the problem of " low load with strong power ", both saved the oil pumper original capital, saves energy significantly again simultaneously, experimental data show, when the utility model uses on individual well average power saving rate as 8%-10% about.

2, the utility model uses at newly-built oil well, can significantly reduce the specification rank of transformer and accessory cables, equipment, saves cost of investment, and energy-saving and cost-reducing meaning is very far-reaching.

3, in the utility model between motor shaft and the belt pulley owing to there is not a mechanical connection, make the vibrations of motor itself can not cause the load vibrations, the vibration problems of whole system is effectively reduced, also absorbed simultaneously the impact of pulse load to motor and decelerator, reduce vibrations 80%, greatly reduce the maintenance cost of system equipment, whole system reaches 25 years equipment life.

4, the utility model is constituted by pure mechanical part; do not produce harmonic wave and Electromagnetic Interference; motor is played good protection; also make simultaneously safe operation of electric network, steadily, stopped apparatus overheat, ageing of insulation, the losts of life such as the overheated even breaking out of fire of circuit that harmonic wave brings, mechanical shock, noise, transformer part are seriously overheated, capacitor, cable so that a series of problems such as damages.

Four, description of drawings:

Fig. 1 is the structural representation of first kind of execution mode of the utility model;

Fig. 2 is the structural representation of second kind of execution mode of the utility model.

1 motor, 2 distance-limiting type magnetic couplings, 3 speed-regulating type magnetic couplers, 4 belt pulleys, 5 magnetic conductive disks, 6 p-m rotors, 7 air gap adjusting mechanisms, 8 actuators

Five, embodiment:

Below in conjunction with accompanying drawing the utility model is described further:

As shown in Figure 1, the integrated actuator of this permanent magnetism is by motor 1, permanent magnetic coupling, belt pulley 4 is formed, permanent magnetic coupling adopts distance-limiting type magnetic coupling 2, the magnetic conductive disk 5 of distance-limiting type magnetic coupling 2 is fixed on 1 in the motor, p-m rotor 6 is fixed on the belt pulley 4, p-m rotor 6 is positioned at the chamber of magnetic conductive disk 5, one fixing gap is arranged between magnetic conductive disk 5 and the p-m rotor 6, it is air gap, drive magnetic conductive disk 5 cutting magnetic line in the high-intensity magnetic field that the p-m rotor 6 that powerful rare-earth magnet is housed is produced during motor 1 rotation, thereby in magnetic conductive disk 5, produce vortex flow, this vortex flow produces dislike magnetic field on magnetic conductive disk 5, spur the relative motion of magnetic conductive disk 5 and p-m rotor 6, thereby realized the torque transfer between motor 1 and the belt pulley 4.The soft start function that the utility model provides by distance-limiting type magnetic coupling 2, make belt pulley 4 rotating speeds can be lower than motor 1 rotating speed, for oil pumper or other load provide splendid buffer starting ability, make that electric current was less when oil pumper or other loaded on startup, little to the electrical network impact, energy consumption greatly reduces during starting.Be equivalent to 3～7 times rated current when having avoided starting, avoided unnecessary electric energy loss.The power factor of motor can bring up to 0.8 from 0.2～0.5 at work, alleviates the burden of electrical network and transformer, reduces line loss, has reduced reactive loss significantly.

Fig. 2 provides the structural representation of second kind of execution mode of the utility model, as shown in Figure 1, the integrated actuator of this permanent magnetism is by motor 1, permanent magnetic coupling, belt pulley 4 is formed, permanent magnetic coupling adopts speed-regulating type magnetic coupler 3 forever, the magnetic conductive disk 5 of speed-regulating type magnetic coupler 3 is fixed on 1 in the motor, p-m rotor 6 is fixed on the belt pulley 4, one adjustable air gap is arranged between magnetic conductive disk 5 and the p-m rotor 6, air gap adjusting mechanism 7 is fixed together with p-m rotor 6, air gap adjusting mechanism 7 connects actuator 8, regulate air gap between magnetic conductive disk 5 and the p-m rotor 6 by air gap adjusting mechanism 7 and actuator 8, can realize that by regulating air gap belt pulley 4 output speeds change.

Claims

1. integrated actuator of permanent magnetism, it is characterized in that: the integrated actuator of this permanent magnetism is made up of motor (1), permanent magnetic coupling, belt pulley (4), the magnetic conductive disk of permanent magnetic coupling (5) is fixed on motor (1) axle, and p-m rotor (6) is fixed on the belt pulley (4).

2. the integrated actuator of permanent magnetism according to claim 1 is characterized in that: described permanent magnetic coupling adopts distance-limiting type magnetic coupling (2).

3. the integrated actuator of permanent magnetism according to claim 1 is characterized in that: described permanent magnetic coupling adopts speed-regulating type magnetic coupler (3).