CN2270826Y

CN2270826Y - Planetary ring gear type non-beam oil pump

Info

Publication number: CN2270826Y
Application number: CN 95241603
Authority: CN
Inventors: 王进戈; 李建防
Original assignee: SICHUAN POLYTECHINCAL COLLEGE
Current assignee: SICHUAN POLYTECHINCAL COLLEGE
Priority date: 1995-05-17
Filing date: 1995-05-17
Publication date: 1997-12-17
Anticipated expiration: 2005-05-17

Abstract

The utility model relates to a planetary gear ring type oil pump without any walking beam, which belongs to an oil pumping device for oil production in an oil field. The utility model is characterized in that a planetary gear ring type reversing reduction gear which is composed of a planetary gear train and partial inner gear of an inner and an outer rack bars enables the rotary direction of a hoisting system to be changed continuously, and the planetary gear ring type reversing reduction gear is arranged between a belt driving system and the belt hoisting system, and is respectively connected with the belt driving system and the belt hoisting system. Because the length of an assembly type slide block can be adjusted, different length of a stroke can be obtained, and the load of a reversing reduction box can not be increased, so that the requirement of balance under various working conditions is satisfied. The utility model has the advantages of simple structure, reliable operation, convenient maintenance, reliable balance, small variation for an electric load, and energy saving.

Description

Planet ring gear formula non-beam beam-pumping unit

The utility model relates to a kind of pumping unit, especially for the pumping unit of oil field oil recovery.

So far, the working principle of existing chain type oil pump (as: patent No. is 86102979 " chain drive pumping unit ") is: path chain is done circulatory motion under motor and retarder driving, and the round frame of specific links drive on it moves up and down along the track of frame.Round frame upper end connects wire rope and joins by pulley and oil-extractor polish-rod, comes and goes moving up and down of frame and promptly forms the upper and lower stroke of rod string, and the lower end that comes and goes frame is connected to the balance chain, and the drive pneumatic counterbalance system, to satisfy the balance requirement of pumping unit.So just finish whole actions of pumping unit.This machine is because chain transmission is vertically installed, and the tensioning difficulty has limited the pumping unit length of stroke, and turn around time is short, impacts greatlyyer, and the inhomogeneous characteristic of the motion of chain-driven itself makes it can not be used for high jig frequency in addition, can not be used for the ultra-long-stroke above five meters.The piece that the while chain type oil pump has in use exposed poor reliability falls into, and this is because chain---and come and go the frame reversing mechanism and determine.It is by many axles and be installed in gear pair gear wheel reversing speed reducer that form, that the output shaft sense of rotation is variable on the axle by one of motor drives that the patent No. 881073628 " gear type no playing beam oil extractor " discloses a kind of working principle, thereby make rope hanger reciprocating, realize the suction action of pumping unit.Because what this machine adopted is planet pinwheel changement, so the profile of tooth of planet wheel is cycloid inevitably, and must slide in the sealing chute of pin gear in the two ends of planet wheel shaft, so there is bigger change in the centre distance of the transmission between cycloidal gear and the pin tooth, and this change is the meshing quality that can have a strong impact on cycloidal gear and pin gear, in addition when doing the commutation motion, planet axis forwards inside groove to or when inside groove forwards water jacket to from water jacket, only there is a pin tooth to participate in engagement, therefore greater impact is inevitable, so it is inappropriate being used for high jig frequency, in addition, the journey mode that increases that this machine adopts is the diameter that increases the winch wheel, be still the lever enlarger in fact, so the moment of torsion of the output shaft of the chang-over speed reducing box of this machine remains and is directly proportional with its length of stroke.When therefore this machine is used for long stroke, must strengthen the load of speed reducer exponentially.

The objective of the invention is, provide a kind of simple in structure, load of using reliable, easy to maintenance, speed reducer not with can either using that stroke increases, the non-beam beam-pumping unit that can in than short stroke, higher jig frequency, use again at long stroke.

The purpose of this utility model realizes by following measure: planet ring gear formula non-beam beam-pumping unit comprises motor, belt transmission, elevator system, balance rope, polished rod wire rope, rope hanger, balance sysmte, frame and guide rail, it is characterized in that: between belt transmission and the elevator system, adopt one by planetary gear train and inside and outside form and the changing planet ring gear of the sense of rotation formula communtation deceleration device that can make elevator system of section of rack internal gear, and link to each other respectively with them.

The utility model compared with the prior art its advantage is: the ring gear slide block in the planet ring gear formula non-beam beam-pumping unit can make modular, so that adjust the length of slide block, thereby obtain different lengths of stroke, to adapt to the needs of various oil wells, obviously regulate length of stroke in this way, can't increase the load of communtation deceleration device and be convenient to transportation and mounting or dismounting.Balance sysmte (7) both can be a pneumatic equalizer, also can be mechanical equilibrator, correctly changed balancing load, just can make pumping unit obtain good balance under various operating modes.As fully visible, the utility model had both had advantage simple in structure, that use is reliable, easy to maintenance; Because balance is reliable, motor load changes little, thereby has energy-conservation effect again.

Providing accompanying drawing below illustrates in conjunction with example.

Fig. 1 is a planet ring gear formula non-beam beam-pumping unit equipment schematic representation;

Fig. 2 is the reversing principle figure of planet ring gear formula non-beam beam-pumping unit planet ring gear formula communtation deceleration device;

Fig. 3 is the structural representation of planet ring gear formula non-beam beam-pumping unit planet ring gear formula communtation deceleration device.

The utility model is by motor 1, belt transmission 2, planet ring gear formula communtation deceleration device 3,

elevator system

4,4 ', 4 ", balance rope 5, polished rod wire rope 6, rope hanger 8, balance sysmte 7, frame 9 and guide rail 10 form.During running, motor, drive 3 work of planet ring gear formula communtation deceleration devices by belt transmission 2; The ring gear slide block of planet ring gear formula communtation deceleration device 3 makes assembly type, periodically to-and-fro motion, thus make the winch wheel 4 of elevator system come back rotation, finish rope woolding and put the rope action, and then rope hanger 8 is pumped, realize suction action.By Fig. 2 and Fig. 3, planet ring gear communtation deceleration device is by belt transmission 2, input shaft 11, planet axis 12, output shaft 13, ring gear slide block 14, gear transmission 15, the tooth bar AD on planet wheel tooth bar 17 and the ring gear slide block 14, gear rack transmission EF, 18, winch wheel 4 and swing arm 19 in the elevator system are formed.Have on the ring gear slide block 14 by tooth bar AD, tooth bar BC, the sealing internal tooth ring gear that semicircle internal gear AB, semicircle internal gear CD form, the top of ring gear slide block have tooth bar EF, also be shaped on the closed ring guide rail groove that constitutes by circular arc ab, cd, ad, bc on the slide block, insert in the guide rail groove at planet axis 12 two ends, and can slide along groove.During work, input shaft 11 is driven by motor 1 by belt transmission 2, by

gear transmission

15,16 duplicate gear 17 is rotated, by gear rack transmission 17, AD gear slider 14 is moved again, sliding in the guide rail groove of ring gear slide block in the planet axis two ends, also will rotate around input shaft 11 under the drive of swing arm 19 in the circular arc portion planet axis of guide rail.By Fig. 2, when the D of tooth bar AD point enters with planet wheel 17 engagements, the end of planet axis arrives the d point of guide rail groove, so arc-shaped guide rail grooves d c allows planet axis 12 to rotate around input shaft 11, thereby make its BC section that slides into guide rail groove, slide into from the d point the process that c orders in planet axis 12, planet wheel 17 is meshed with internal gear DC on the one hand, rotate around input shaft 11 on the one hand, thereby the commutation that realizes ring gear slide block 14 is moved.Equally, when guide rail groove ba allows planet axis 12 when input shaft 11 rotates, planet axis 12 slides into groove ad through groove ba again, from and change the movement direction of ring gear slide block 14.Though therefore the sense of rotation of input shaft 11 is a fixing sense of rotation, ring gear slide block 14 is done periodic to-and-fro motion.By gear rack transmission EF, 18, just make winch take turns 4 periodic forward and reverse rotations, realize rope woolding and the action of putting rope.For example the length in the stroke elevator system is 6 meters, jig frequency be 5 dash/minute, maximum polished rod load 117.6 thousand newton.

Claims

1. a planet ring gear formula non-beam beam-pumping unit comprises motor, belt transmission, elevator system, balance rope, polished rod wire rope, rope hanger, balance sysmte, frame and guide rail, it is characterized in that: between belt transmission and the elevator system with one by planetary gear train and inside and outside tooth bar, the part internal gear is that form and the changing planet ring gear of sense of rotation formula communtation deceleration device that can make elevator system, and link to each other respectively with them.

2. by the described planet ring gear of claim 1 formula non-beam beam-pumping unit, it is characterized in that: planet ring gear formula communtation deceleration device by input shaft (11), gear transmission (15), (16), swing arm (19), be installed in planet axis (12) in the swing arm, be installed in the compound planet gear (17) on the planet axis and have inside and outside tooth bar and ring gear formation that the part internal gear is formed.

3. by claim 1 or 2 described planet ring gear formula non-beam beam-pumping units, it is characterized in that the belt guide rail groove of sealing that ring gear in the planet ring gear formula communtation deceleration device has planet axis (12) two end part of being made up of two semi-circlees (ab), (cd) and two straight lines (ad), (bc) to slide inside.

4. it is characterized in that having on the ring gear one by tooth bar (AD) by the described planet ring gear of claim 1 formula non-beam beam-pumping unit, (BC) and ring gear (AB), (CD) constitute can with the sealing ring gear of planetary pinion 17 normal engaged, the top of ring gear has tooth bar (EF) simultaneously.