CN2337330Y

CN2337330Y - Electromechanical exhauster for removing cooking fumes

Info

Publication number: CN2337330Y
Application number: CN 98244326
Authority: CN
Inventors: 王仲茂
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-25
Filing date: 1998-09-25
Publication date: 1999-09-08
Anticipated expiration: 2008-09-25

Abstract

The utility model relates to an electromechanical exhauster for removing cooking fumes, being applied to oil production for an oil field. The utility model is composed of a rotary horse head 1, a low speed electric machine 2, a machine frame 8, etc. The utility model is characterized in that an outer housing of the low speed electric machine 2 is sheathed with the rotary horse head 1, and the low speed electric machine and the rotary horse head are fixed at the upper end of the machine frame 8 through center shafts; the rotary horse head 1 is directly driven by the low speed electric machine 2 when the utility model works. The utility model has the advantages of novel design, simple structure, good effect of balance, long stroke, high mechanical efficiency, etc. The utility model can be suitable for oil pumping production for a middle well and a deep well, and can obtain obvious effect of power saving after applied.

Description

The motor type pumping unit

The utility model relates to a kind of oil field drilling machinery, especially for the pumping unit that recovers the oil and produce.

At present, the employed pumping unit of each oil well, its dynamic transfer system generally comprises power engine, transmission device, retarder (case) and changement etc.Wherein beam pumping unit is a spin balancing owing to what adopt, and counterbalance effect is poor, mechanical efficiency is low, and limit by structural feature, can not increase substantially length of stroke; Though but not beam pumping unit has adopted VE, counterbalance effect increases, length of stroke increases, and limited by multistage transmission, can not increase substantially mechanical efficiency.

The purpose of this utility model: provide a kind of and adopt VE and stroke is long, simple in structure, mechanical efficiency is high for the oil field recover the oil to produce, by the motor type pumping unit of motor direct-drive horse head.

The purpose of this utility model realizes by following measure: a kind of motor type pumping unit that is used for the oil field oil recovery, by rotating horsehead, slowspeed machine, balance rope, braking device, turn to buffer, equilibrium block, hair plait and frame etc. to form, the rotating horsehead that it is characterized in that reversible slowspeed machine outer cover suit one ring-type, both are fixed on the upper end of Vertical Rack by the central shaft on the slowspeed machine, at upper rack and the friction type braking device also is installed the corresponding position of rotating horsehead outer rim and the spring energy-storage formula turns to buffer; Install and fix hairiness plait and balance rope on the rotating horsehead outer rim respectively, the hair plait stretches out (can be connected with the outstanding device that rises on the sucker rod) from its front, and the balance rope stretches out from its back and the hanging balancing piece.

The purpose of this utility model can also realize by following measure: the slowspeed machine on the motor type pumping unit can be the DC permanent-magnetic brushless synchronous machine, also can be multistage control adjustable speed-adjustable asynchronous motor frequently.

The utility model modern design, simple in structure has characteristics such as good balance effect, stroke length, and applicable to the oil pumping production of deep-well, owing to adopt the mode of motor direct-drive, the mechanical efficiency height can be obtained tangible power savings after the application.

Fig. 1 is a motor type pumping unit structural representation.

The motor type pumping unit by rotating horsehead 1, slowspeed machine 2, balance rope 3, braking device 4, turn to buffer 5, equilibrium block 6, hair plait 7 and frame 8 etc. to form.The rotating horsehead 1 of synchronous slowspeed machine 2 outer cover suits of reversible DC permanent-magnetic brushless one ring-type, both are fixed on the upper end of Vertical Rack 8 by the central shaft on the slowspeed machine 2, on frame 8 tops and the friction type braking device 4 also is installed the corresponding position of rotating horsehead 1 outer rim and the spring energy-storage formula turns to buffer 5; Install and fix hairiness plait 7 and balance rope 3 on rotating horsehead 1 outer rim respectively, a hair plait 7 stretches out (can be connected with the outstanding device 9 that rises on the sucker rod) from its front, and balance rope 3 stretches out from its back and is hung with equilibrium block 6.

The using method of motor type pumping unit and working principle are same as general no beam pumping unit substantially.Different is because to have adopted the DC permanent-magnetic brushless synchronous machine be power source, its power factor is higher than common AC asynchronous motor, also owing to adopted the structure of slowspeed machine 2 direct rotary driving horse heads 1, reduced the loss in the power conduction, the mechanical efficiency of complete machine significantly improved, power consumption descends; The change of the sense of rotation of rotating horsehead 1 and work corner can realize by the working state that the controller that adds is adjusted slowspeed machine 2; It is to be finished by catch that is fixed on rotating horsehead 1 side and the spring that is fixed on the frame 8 that the spring energy-storage formula turns to the buffer function of buffer 5, can make the upper and lower stroke of rotating horsehead 1 turn to more steady; The friction type braking device 4 that acts directly on rotating horsehead 1 outer rim can make the braking quality of this pumping unit more reliable.

Claims

1, a kind of motor type pumping unit that is used for the oil field oil recovery, by rotating horsehead, slowspeed machine, balance rope, braking device, turn to buffer, equilibrium block, hair plait and frame etc. to form, it is characterized in that: the rotating horsehead of reversible slowspeed machine outer cover suit one ring-type, both are fixed on the upper end of Vertical Rack by the central shaft on the slowspeed machine, at upper rack and the friction type braking device also is installed the corresponding position of rotating horsehead outer rim and the spring energy-storage formula turns to buffer; Install and fix hairiness plait and balance rope on the rotating horsehead outer rim respectively, the hair plait stretches out from its front and can be connected with the outstanding device that rises on the sucker rod, and the balance rope stretches out from its back and the hanging balancing piece.

2, motor type pumping unit according to claim 1 is characterized in that: slowspeed machine is the DC permanent-magnetic brushless synchronous machine.

3, motor type pumping unit according to claim 1 is characterized in that: slowspeed machine is a multistage control adjustable speed-adjustable asynchronous motor frequently.