CN202560178U - Pumping unit device of driving movement of chains and well rod along fan-shaped edge - Google Patents

Abstract

A pumping unit device of driving movement of chains and a well rod along a fan-shaped edge is a device which belongs to the technical field of pumping units in the oil field. The pumping unit device comprises a main synchronizing shaft, bearings, a lower shaft barrel, synchronizing sprockets, synchronizing chains, drive sprockets, chains, driven sprockets, an upper shaft barrel, a driven shaft, a circulating shaft, a weight balance box, a head sheave, a head sheave shaft, a hanging rope and a well rod. The pumping unit device comprises two groups of symmetrical chain and sprocket transmission devices, wherein the diameter of each drive sprocket is three times bigger than that of each driven sprocket in each group; the symmetrical identical chains are hung on each group of sprockets, and the sprockets are replaced by two end axles of the circulating shaft in one pair of symmetrical section axle holes of the chains; the motion track of each chain is a fan-shaped edge track; the weight balance box is fixedly connected to the upper part of the circulating shaft; the top of an upper cover of the weight balance box is fixedly connected with one end of the hanging rope; and the other end of the hanging rope bypasses the semi-circle of the head sheave and is fixedly connected with the well rod. The motion of the well rod of the pumping unit device is variable rectilinear motion. Compared with other pumping units, the pumping unit device has the advantages of improving the oil pumping quantity by 40%.

Description

Along scallop along driving chain and the well bar pumping unit apparatus that moves

One, technical field: along scallop along driving chain and the well bar pumping unit apparatus that moves be the pumping unit apparatus that belongs in the oil-field oil pumper technical field.

Two, background technology: known, the applied oil pumper kind of oil field operation is a lot of at present, but in the process of oil pumping; The speed that the well bar is done to pump is linear uniform motion, and when sucker rod moved upward, the well casing inner fluid moved upward; Because ducted non-return valve spring action on the ground, in producing, fluid presses the power effect that must head on greater than the non-return valve spring with the internal pressure of fluid; Ability breakdown non-return valve could get in the pipeline of fluid so fluid passes through non-return valve, because the non-return valve spring force is compressing the fluid in the well casing always; Fluid is shunk, and the fluid performance that contracts is stored in the fluid in the well casing always, and the well bar of the oil pumper that adopt in current oil field all is at the uniform velocity straight reciprocating motions; Because moving to the vicinity of top dead centre, the well bar do not have slow-down; Producing the oil well pipe inner fluid does not have to discharge the release time by non-return valve spring force compression energy fully, and it is little in the motion gyration time of top dead centre vicinity to produce the well bar, and the fluid in the well casing reduces by the quantity of non-return valve; The experiment proof; Existing rod-pumped well bar does in the linear uniform motion process, and this device oil pumper has lost 40% the liquid measure of adopting in oil pumping process on year-on-year basis.

Three, summary of the invention: this device purpose provides a kind of along scallop along driving chain and the well bar pumping unit apparatus that moves; This device is formed with the chain of two groups of symmetries and the transmission device of sprocket wheel; Every group drive sprocket diameter is greater than three times of driven sprocket diameters; Every group of sprocket wheel hanging the identical chain of symmetry, in the symmetry one nodal axisn hole of two symmetrical groups chain, replaces with the two end axles of circulation axis; The track of chain movement is the track on scallop edge; Circulation axis is an eccentric shaft; Fixed ballast box above eccentric shaft; Ballast box is a rectangular box, fixed the end of outstanding rope at the center of the upper box lid of ballast box, and the other end of outstanding rope walks around the top cylindrical of head sheave and the upper end of well bar is connected together; Head sheave is arranged on a upper lateral part space in the centre position of two groups of chains and sprocket wheel; The centre bore of drive sprocket is set on down on the cylindrical of beam barrel one end, carries out fixed; The centre bore of synchronous sprocket wheel is set on down on the other end cylindrical of beam barrel, carries out fixed; The two ends of circular hole are being respectively charged into bearing in the following beam barrel, the centre bore of the bearing main synchronizing shaft of packing into; The centre bore of driven sprocket is set on the cylindrical of beam barrel one end, and the two ends of circular hole install bearing in the last beam barrel, the centre bore of the bearing driven shaft of packing into; When synchronization chain moves, synchronous sprocket wheel, drive sprocket, chain, driven sprocket and circulation axis are synchronized with the movement, because the two end axles of circulation axis injects in the chain section axis hole of symmetry, circulation axis is moving around fan-shaped chain track circulation; When circulation axis from top dead centre when lower dead center is moved, the well bar then moves to top dead centre from lower dead center; When circulation axis at the uniform velocity moves to the horizontal direction position of main synchronizing shaft on fan-shaped track; Promptly be that distance that the well bar moves up to top dead centre is when equaling the length of drive sprocket radius; Meanwhile, being projected in the rectilinear motion on the well bar, is that the well bar is made even deceleration rectilinear motion; When circulation axis moved to lower dead center, the well bar reached the limit of a little do uniformly retarded motion---top dead centre; When circulation axis by lower dead center when top dead centre is made uniform motion; The top dead centre that then is projected in the well bar is done uniformly accelerated motion to lower dead center; When circulation axis when lower dead center moves to the horizontal direction position of main synchronizing shaft, then the well bar distance of doing uniformly accelerated motion by top dead centre equals the length of drive sprocket radius; So the acceleration that the well bar moves downward reaches capacity; Because in the reciprocating process of well bar is change speed linear motion; The operating principle of this device is: when circulation axis from lower dead center when top dead centre moves; The well bar is to move to lower dead center from top dead centre; The well bar to the lower dead center motion process, is oil well pump is irritated oil in oil well pipe process from top dead centre; When circulation axis from top dead centre to the process of lower dead center motion, be the well bar from lower dead center to the process of top dead centre motion; Because the well bar moves upward, make the fluid in the well casing back down non retern valve and valve inner spring, because non retern valve receives the effect of spring force, the well casing inner fluid is compressed.During the compression of well casing inner fluid, produce compression energy, when circulation axis moves to the horizontal direction of main synchronizing shaft; Then the well bar distance that upwards moves to top dead centre equals the radius length of drive sprocket; So the well bar is made the deceleration rectilinear motion, because the well bar is made the deceleration rectilinear motion, the fluid in the well casing has adequate time to discharge compressed energy; Promptly be that the interior fluid of well casing has adequate time from non retern valve, to be discharged in the pipeline on ground; In experimentation, this device is other oil pumper raising oil pumping liquid on year-on-year basis, can be increased to 40%.

The technical scheme that this device adopted is: along scallop along driving chain and the well bar pumping unit apparatus that moves; Be with main synchronizing shaft, bearing, down beam barrel, synchronous sprocket wheel, synchronization chain, drive sprocket, chain, driven sprocket, go up beam barrel, driven shaft, circulation axis, ballast box, head sheave, day wheel shaft, outstanding rope and well bar and formed, all are cylindrical steel bodies with main synchronizing shaft, driven shaft and a sky wheel shaft; With bearing, synchronous sprocket wheel, synchronization chain, drive sprocket, chain and driven sprocket all are standard component products, and wherein the length of drive sprocket diameter is three times of driven sprocket diameter length; Above beam barrel and following beam barrel are cylindrical shape steel bodies, are provided with circular nest at the two ends of the interior circular hole of cylindrical shape steel body; Circulation axis is an eccentric shaft, and the vicinity is provided with the cylindrical steel body in the two ends of eccentric shaft; Ballast box is a rectangular box; Head sheave is a circular wheel, establishes a through hole at the center of circular wheel; Outstanding rope is a wire rope; The well bar is the cylindrical steel body; The assembling of this device:: be respectively charged in the two terminal circle nest of following beam barrel centre bore with bearing, main synchronizing shaft pierces in the centre bore of bearing; The centre bore of synchronous sprocket wheel is set on down on the cylindrical of beam barrel one end, carries out fixedly, is set on down on the other end cylindrical of beam barrel with the centre bore of drive sprocket, carries out fixed; Synchronization chain is suspended on the cylindrical of synchronous sprocket wheel; In the round nest at the interior circular hole two ends of above beam barrel, be respectively charged into bearing, the driven shaft of in the centre bore of bearing, packing into; Last beam barrel one end cylindrical pierces in the centre bore of driven sprocket, carries out fixed; Chain suspension is on the cylindrical of drive sprocket and driven sprocket; In a chain link axis hole of mutual symmetrically arranged chain, the two end axles with circulation axis is inserted in this chain link axis hole respectively; The last plane of the eccentric shaft of circulation axis is cemented in the center of the lower plane at the bottom of the ballast box; Above the case lid of ballast box central point fixed an end of outstanding rope, cylindrical and well bar one end that the other end of outstanding rope is walked around head sheave carry out fixed; Install a day wheel shaft in the centre bore of head sheave, head sheave is arranged in the side space of middle upper part of two symmetrically arranged fan-shaped chain tracks.

Owing to adopt the advantage of above technical scheme to be: when circulation axis from top dead centre when lower dead center is moved; The well bar then is to move to top dead centre from lower dead center; Promptly being that the interior fluid of well casing moves in the pipeline through non retern valve earthward, promptly is that the fluid in the well casing carries out in the process of delivering oil in the pipeline through non retern valve earthward, simultaneously when circulation axis moves to the center line horizontal plane of main synchronizing shaft; Promptly be that the well pole clearance is when the length of top dead centre equals the drive sprocket radius; This moment the well bar to move upward be to do uniformly retarded motion because the well bar is done uniformly retarded motion, under the situation that well bar range ability equates; Prolong the oil pumping time; Fluid in the oil well pipe is discharged by the energy of non retern valve compression fully, fluid in the well casing is obtained in the oil-piping that adequate time flow into ground, this device is 40% according to existing other oil pumper raising oil pumping yield.

Four, description of drawings:

Fig. 1 is along scallop along driving chain and the move master of pumping unit apparatus of well bar looks the semi-section schematic diagram of structure.

Fig. 2 is the left apparent structure schematic diagram of Fig. 1.

Five, the specific embodiment: be elaborated below in conjunction with Fig. 1 and Fig. 2; In Fig. 1 and Fig. 2; Along scallop along driving chain and the well bar pumping unit apparatus that moves; Be with main synchronizing shaft (1), bearing (2), down beam barrel (3), synchronous sprocket wheel (4), synchronization chain (5), drive sprocket (6), chain (7), driven sprocket (8), go up beam barrel (9), driven shaft (10), circulation axis (11), ballast box (12), head sheave (13), day wheel shaft (14), outstanding rope (15) and well bar (16) and formed, it is characterized in that: with main synchronizing shaft (1), driven shaft (10) and a sky wheel shaft (14) all are cylindrical steel bodies; With bearing (2), synchronous sprocket wheel (4), synchronization chain (5), drive sprocket (6), chain (7) and driven sprocket (8) all are standard component products, and wherein the length of drive sprocket (6) diameter is three times of driven sprocket (8) diameter length; Above beam barrel (9) and following beam barrel (3) are cylindrical shape steel bodies, are provided with circular nest at the two ends of the interior circular hole of cylindrical shape steel body; Circulation axis (11) is an eccentric shaft, and the vicinity is provided with the cylindrical steel body in the two ends of eccentric shaft; Ballast box (12) is a rectangular box; Head sheave (13) is a circular wheel, establishes a through hole at the center of circular wheel; Outstanding rope (15) is a wire rope; Well bar (16) is the cylindrical steel body; The assembling of this device: be respectively charged in the two terminal circle nest of following beam barrel (3) centre bore with bearing (2), main synchronizing shaft (1) pierces in the centre bore of bearing (2), and the centre bore of synchronous sprocket wheel (4) is set on down on the cylindrical of beam barrel (3) one ends, carries out fixed; Centre bore with drive sprocket (6) is set on down on the other end cylindrical of beam barrel (3), carries out fixed; Synchronization chain (5) is suspended on the cylindrical of synchronous sprocket wheel (4); In the round nest at the interior circular hole two ends of above beam barrel (9), be respectively charged into bearing (2), the driven shaft (10) of in the centre bore of bearing (2), packing into; Last beam barrel (9) one end cylindricals pierce in the centre bore of driven sprocket (8), carry out fixed; Chain (7) is suspended on the cylindrical of drive sprocket (6) and driven sprocket (8); In a chain link axis hole of mutual symmetrically arranged chain (7), the two end axles with circulation axis (11) is inserted in this chain link axis hole respectively; The last plane of the eccentric shaft of circulation axis (11) is cemented in the center of the lower plane at ballast box (12) end; Above the case lid of ballast box (12) central point fixed an end of outstanding rope (15), cylindrical and well bar (16) one ends that the other end of outstanding rope (15) is walked around head sheave (13) carry out fixed; Install a day wheel shaft (14) in the centre bore of head sheave (13), head sheave (13) is arranged in the side space of middle upper part of two symmetrically arranged fan-shaped chains (7) track.

Claims (1)

1. along scallop along driving chain and the well bar pumping unit apparatus that moves; Be with main synchronizing shaft (1), bearing (2), down beam barrel (3), synchronous sprocket wheel (4), synchronization chain (5), drive sprocket (6), chain (7), driven sprocket (8), go up beam barrel (9), driven shaft (10), circulation axis (11), ballast box (12), head sheave (13), day wheel shaft (14), outstanding rope (15) and well bar (16) and formed, it is characterized in that: with main synchronizing shaft (1), driven shaft (10) and a sky wheel shaft (14) all are cylindrical steel bodies; With bearing (2), synchronous sprocket wheel (4), synchronization chain (5), drive sprocket (6), chain (7) and driven sprocket (8) all are standard component products, and wherein the length of drive sprocket (6) diameter is three times of driven sprocket (8) diameter length; Above beam barrel (9) and following beam barrel (3) are cylindrical shape steel bodies, are provided with circular nest at the two ends of the interior circular hole of cylindrical shape steel body; Circulation axis (11) is an eccentric shaft, and the vicinity is provided with the cylindrical steel body in the two ends of eccentric shaft; Ballast box (12) is a rectangular box; Head sheave (13) is a circular wheel, establishes a through hole at the center of circular wheel; Outstanding rope (15) is a wire rope; Well bar (16) is the cylindrical steel body; The assembling of this device: be respectively charged in the two terminal circle nest of following beam barrel (3) centre bore with bearing (2), main synchronizing shaft (1) pierces in the centre bore of bearing (2), and the centre bore of synchronous sprocket wheel (4) is set on down on the cylindrical of beam barrel (3) one ends, carries out fixed; Centre bore with drive sprocket (6) is set on down on the other end cylindrical of beam barrel (3), carries out fixed; Synchronization chain (5) is suspended on the cylindrical of synchronous sprocket wheel (4); In the round nest at the interior circular hole two ends of above beam barrel (9), be respectively charged into bearing (2), the driven shaft (10) of in the centre bore of bearing (2), packing into; Last beam barrel (9) one end cylindricals pierce in the centre bore of driven sprocket (8), carry out fixed; Chain (7) is suspended on the cylindrical of drive sprocket (6) and driven sprocket (8); In a chain link axis hole of mutual symmetrically arranged chain (7), the two end axles with circulation axis (11) is inserted in this chain link axis hole respectively; The last plane of the eccentric shaft of circulation axis (11) is cemented in the center of the lower plane at ballast box (12) end; Above the case lid of ballast box (12) central point fixed an end of outstanding rope (15), cylindrical and well bar (16) one ends that the other end of outstanding rope (15) is walked around head sheave (13) carry out fixed; Install a day wheel shaft (14) in the centre bore of head sheave (13), head sheave (13) is arranged in the side space of middle upper part of two symmetrically arranged fan-shaped chains (7) track.