CN216077065U - Tower type intelligent control long-stroke non-beam pumping unit - Google Patents
Tower type intelligent control long-stroke non-beam pumping unit Download PDFInfo
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- CN216077065U CN216077065U CN202122446688.4U CN202122446688U CN216077065U CN 216077065 U CN216077065 U CN 216077065U CN 202122446688 U CN202122446688 U CN 202122446688U CN 216077065 U CN216077065 U CN 216077065U
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Abstract
A tower type intelligent control long-stroke walking-beam-free pumping unit belongs to the technical field of petroleum mine machinery and comprises a winch roller assembly, a movable double-pulley system, a fixed double-pulley system, a tower assembly, a well repairing and abdicating mechanism, an intelligent control and driving system and an oil extraction wellhead system. The winch drum assembly is fixed on the upper platform of the wellhead tower frame, so that the fatigue damage and the friction damage caused by the bending and extrusion alternating stress formed on the fixed pulley are eliminated and reduced, wherein the flexible polished rod of the steel wire rope is arranged at the rope outlet of the winch drum and the rope inlet positions at two sides of the rope groove of the fixed pulley. The transmission structure is simplified and the transmission chain is reduced, so that the moving parts and the lubricating points are reduced. The safety risk points of maintenance, maintenance and regulation are greatly reduced. The fatigue damage degree of the flexible polished rod of the steel wire rope is effectively eliminated and reduced, the service life of the flexible polished rod of the steel wire rope is prolonged, the running reliability of equipment is improved, and the flexible polished rod is leather and durable.
Description
Technical Field
The utility model belongs to the technical field of petroleum field machinery, and particularly relates to a tower type intelligent control long-stroke walking-beam-free pumping unit.
Background
The winch drum is used for winding a steel wire rope to replace a polished rod or a rigid sucker rod for oil extraction operation, and the winch drum is a rod oil extraction machine which is gradually increased in recent years, and has two types, one type is a horizontal type, and if the winch drum is a low type ultra-long stroke intelligent control winch type lifting oil extraction system and a working method, the application number is as follows: 201410184063.7, respectively; patent "overlength stroke oil recovery device", application number: 201420750926.8. the machine type consists of two parts, namely a winch roller assembly, a wellhead vertical frame and a guide fixed pulley. The other type is a vertical tower frame type, such as a winch type oil extraction device in the patent, application number: 201410360663.4, respectively; the patent: "an intelligence overlength stroke beam-pumping unit", application number: 201911112157.2. the vertical tower frame type directly and fixedly installs a winch roller assembly on a well head vertical frame, or the winch roller assembly axially moves on the well head vertical frame.
In recent years, batch horizontal type machine types are produced and operated in Daqing oil fields, and vertical tower type machine types have few prototype machines or no prototype machines. After 3-4 years of field operation, the horizontal type steel wire rope machine is exposed out of the extrusion of the steel wire rope at the edge of a guide fixed pulley rope groove and the rope outlet position of a roller, the bending and friction damage is serious, and the service life of the steel wire rope and the reliability of equipment operation are both problematic. In particular to a steel wire rope flexible polished rod wrapped with high molecular polymer.
The 'vertical' tower type 'intelligent ultra-long stroke oil pumping machine' uses the method of axial movement of winch drum assembly to overcome some problems of 'horizontal' type. However, although the winch drum assembly is fixed on a wellhead vertical frame and a double fixed pulley is used for clamping a steel wire rope to be led into a wellhead, the winch oil production device still cannot well solve the problems of a horizontal type machine, and has the advantages of complex structure, long transmission chain, obviously lower manufacturing cost and later maintenance cost than the horizontal type machine, and obviously improved operation reliability.
Therefore, there is a need in the art for a new solution to solve this problem.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a tower posture intelligent control long stroke does not have beam-pumping unit is used for solving the technical problem that the cable wire all has the bending and serious frictional damage of existing winch formula does not have beam-pumping unit.
A tower type intelligent control long-stroke walking-beam-free pumping unit comprises a winch roller assembly, a movable double-pulley system, a fixed double-pulley system, a tower assembly, a well repairing yielding mechanism, an intelligent control and drive system and an oil extraction wellhead system,
the tower assembly comprises a tower frame, a frame upper platform, a ladder and tower bottom fixing section steel, and is fixedly arranged above the oil production well head through the tower bottom fixing section steel; the upper part of the tower frame is fixedly provided with an upper frame platform, the side part of the tower frame is provided with a ladder, and the lower part of the tower frame is provided with tower bottom fixing section steel; the movable double-pulley system and the fixed double-pulley system are vertically arranged in the middle of the tower assembly;
the winch roller assembly is arranged at the upper part of the upper platform of the frame and comprises an assembly base, a bearing seat, a roller shaft, a roller body, a main transmission chain wheel and a flexible polished rod; the assembly base is fixedly arranged at the upper part of the upper platform of the frame, and bearing seats are respectively and fixedly arranged at the two ends of the assembly base; two ends of the roller shaft are respectively connected with the bearing seats, two ends of the roller shaft are also respectively connected with the main transmission chain wheel, and the middle part of the roller shaft is sleeved with the roller body; a centi-Past spiral groove is formed in the cylindrical surface in the rope accommodating groove of the roller body; one end of the flexible polished rod is fixedly connected with one end of the roller body, the flexible polished rod is embedded into the centiPas spiral groove and surrounds the outer cylindrical surface of the roller body along the groove, and the other end of the flexible polished rod sequentially penetrates through pulley rope groove holes of the double pulleys of the moving double-pulley system and the fixed double-pulley system;
the well repairing yielding mechanism comprises a yielding roller box and a yielding track; the abdicating tracks are arranged on two sides of the wellhead; the abdicating roller boxes are fixedly arranged on two sides of the bottom of the tower frame and are connected with the abdicating track through rollers;
the intelligent control and drive system comprises an intelligent control box, a load sensor, an electromagnetic brake, a rotating speed encoder and a planetary reducer variable-frequency speed regulation motor; the planetary reducer variable frequency speed regulating motor is connected with one end of the roller shaft, and one side of an output shaft of the planetary reducer variable frequency speed regulating motor is provided with a rotating speed encoder and an electromagnetic brake; the load sensors are arranged below the two bearing seats; the intelligent control box is respectively electrically connected with the load sensor, the electromagnetic brake, the rotating speed encoder and the planetary reducer variable-frequency speed regulation motor;
the oil extraction wellhead system comprises a sleeve, a paraffin removal valve, an oil pipe tee joint, a sleeve four-way joint, an oil pipe hanging seat, a packing box, a rigid sucker rod hanger, a rigid sucker rod, an oil pipe, a pump pull rod, a plunger and a pump barrel; the oil pipe is arranged in the oil production well, the oil pipe is sequentially provided with a paraffin removal valve, an oil pipe tee joint and a sleeve four-way joint from top to bottom, the upper part inside the oil pipe is provided with a packing box, the oil pipe is fixed at the lower part of the sleeve through an oil pipe hanger, and the lower part of the oil pipe is fixedly connected with the pump barrel; the oil pipe hanging seat is arranged on the four-way joint of the sleeve; the upper end of the rigid sucker rod is connected with a flexible polished rod which passes through the pulley rope slotted holes of the movable double pulley system and the fixed double pulley system through a rigid sucker rod hanger, and the lower end of the rigid sucker rod is fixedly connected with the upper end of the pump pull rod; the lower end of the pump pull rod is fixedly connected with the upper end of the plunger; the plunger reciprocates up and down in the pump barrel.
The movable double-pulley system comprises a left movable pulley, a right movable pulley, a pulley bracket, a movable track, a traction screw rod, a driven chain wheel screw nut and a screw nut bracket; the pulley bracket is arranged on the moving track; the movable track is fixedly arranged on the nut bracket; pressure bearings are arranged on shafts of the left moving pulley and the right moving pulley, the left moving pulley and the right moving pulley are respectively arranged at two ends of the pulley bracket through supporting shafts, and the left moving pulley and the right moving pulley are respectively connected with one end of a traction screw rod which is correspondingly arranged; the other end of the traction screw is in threaded connection with a driven chain wheel nut, and the thread pitch of the traction screw and the driven chain wheel nut is equal to the diameter of the flexible polished rod; the driven chain wheel nut is connected with the tower frame through a nut support, and the outside of the driven chain wheel nut is connected with the main driving chain wheel through a driving chain.
The fixed double-pulley system comprises a left fixed pulley, a right fixed pulley and a pulley fixed base; and the left fixed pulley and the right fixed pulley are respectively installed on the tower frame through pulley fixed bases.
The middle point of the circle center connecting line of the two pulley rope grooves of the fixed double-pulley system is downwards aligned with the center of the oil extraction well head, the middle point of the circle center connecting line of the two pulley rope grooves of the fixed double-pulley system is upwards aligned with the stroke middle point of the flexible polished rod in the cBass spiral groove on the roller body, and an included angle alpha formed by the connecting line from the middle point of the circle center connecting line of the two pulley rope grooves of the fixed double-pulley system to the tangent point of the first circle of rope outlet at the beginning of the stroke of the roller body and the connecting line from the middle point of the circle center connecting line of the two pulley rope grooves of the fixed double-pulley system to the tangent point of the last circle of rope outlet at the end of the stroke of the roller body is less than or equal to 3 degrees.
Through the design scheme, the utility model can bring the following beneficial effects:
the winch drum assembly is fixed on the upper platform of the wellhead tower frame, so that the fatigue damage and the friction damage caused by the bending and extrusion alternating stress formed on the fixed pulley are eliminated and reduced, wherein the flexible polished rod of the steel wire rope is arranged at the rope outlet of the winch drum and the rope inlet positions at two sides of the rope groove of the fixed pulley. The transmission structure is simplified and the transmission chain is reduced, so that the moving parts and the lubricating points are reduced. The safety risk points of maintenance, maintenance and regulation are greatly reduced. Further improving the reliability of operation and the service life. The utility model has extremely simple and compact structure, thereby being convenient to manufacture, install and maintain and greatly reducing the manufacturing cost and the later maintenance cost. The fatigue damage degree of the flexible polished rod of the steel wire rope is effectively eliminated and reduced, the service life of the flexible polished rod of the steel wire rope is prolonged, the running reliability of equipment is improved, and the flexible polished rod is leather and durable.
Drawings
The utility model is further described with reference to the following figures and detailed description:
fig. 1 is a schematic structural diagram of a tower-type intelligent control long-stroke walking-beam-free pumping unit.
Fig. 2 is a first graph of stress analysis of a horizontal flexible polish rod in the prior art.
Fig. 3 is a second graph of stress analysis of a horizontal flexible polish rod in the prior art.
Fig. 4 is a stress analysis diagram of a vertical type "a winch oil extraction device" in the prior art.
Fig. 5 is a stress analysis diagram of the flexible polish rod of the tower-type intelligent control long-stroke walking-beam-free pumping unit.
In the figure, 1-winch roller assembly, 2-moving double-pulley system, 3-fixed double-pulley system, 4-tower assembly, 5-workover abdication mechanism, 6-intelligent control and drive system, 7-oil extraction wellhead system, 8-transmission chain, 11-assembly base, 12-bearing seat, 13-roller shaft, 14-roller body, 15-main transmission chain wheel, 16-flexible polish rod, 21-left moving pulley, 22-right moving pulley, 23-pulley bracket, 24-moving track, 25-traction screw, 26-driven chain wheel screw nut, 27-screw nut bracket, 31-left fixed pulley, 32-right fixed pulley, 33-pulley fixed base, 41-tower frame, 42-frame upper platform, 43-ladder, 44-tower bottom fixed profile steel, 45-guardrail, 51-abdicating roller box, 52-abdicating track, 61-intelligent control box, 62-load sensor, 63-planetary reducer variable frequency speed regulation motor, 71-casing, 72-paraffin removal valve, 73-oil pipe tee joint, 74-casing four-way joint, 75-oil pipe hanging seat, 76-packing box, 77-rigid sucker rod hanger, 78-rigid sucker rod, 79-oil pipe, 710-pump pull rod, 711-plunger and 712-pump barrel.
Detailed Description
As shown in the figure, the tower type intelligent control long-stroke walking-beam-free pumping unit comprises a winch roller assembly 1, a movable double-pulley system 2, a fixed double-pulley system 3, a tower assembly 4, a workover yielding mechanism 5, an intelligent control and drive system 6 and an oil extraction wellhead system 7,
the tower assembly 4 comprises a tower frame 41, a frame upper platform 42, a ladder 43 and tower bottom fixing section steel 44, and is fixedly arranged above the oil production wellhead through the tower bottom fixing section steel 44; a frame upper platform 42 is fixedly installed on the upper part of the tower frame 41, a ladder 43 is arranged on the side part of the tower frame 41, and tower bottom fixing section steel 44 is arranged on the lower part of the tower frame 41; the movable double-pulley system 2 and the fixed double-pulley system 3 are vertically arranged in the middle of the tower assembly 4;
the winch roller assembly 1 is arranged at the upper part of the frame upper platform 42 and comprises an assembly base 11, a bearing seat 12, a roller shaft 13, a roller body 14, a main transmission chain wheel 15 and a flexible polished rod 16; the assembly base 11 is fixedly arranged at the upper part of the frame upper platform 42, and two ends of the assembly base 11 are respectively and fixedly provided with a bearing seat 12; two ends of the roller shaft 13 are respectively connected with the bearing seats 12, two ends of the roller shaft 13 are also respectively connected with the main transmission chain wheel 15, and the middle part of the roller shaft 13 is sleeved with the roller body 14; a centi-Past spiral groove is formed on the cylindrical surface in the rope accommodating groove of the roller body 14; one end of the flexible polished rod 16 is fixedly connected with one end of the roller body 14, the flexible polished rod 16 is embedded into the centi-Pass spiral groove and surrounds the outer cylindrical surface of the roller body 14, and the other end of the flexible polished rod 16 sequentially penetrates through the pulley rope groove holes of the double pulleys of the movable double-pulley system 2 and the fixed double-pulley system 3; a guardrail 45 is arranged at the upper part of the frame upper platform 42;
the workover yielding mechanism 5 comprises a yielding roller box 51 and a yielding track 52; the abdicating track 52 is arranged at two sides of the wellhead; the yielding roller boxes 51 are fixedly installed on two sides of the bottom of the tower frame 41, and the yielding roller boxes 51 are connected with the yielding rails 52 through rollers. Before workover operation, the flexible polished rod 16 withdrawing mechanism of the movable double-pulley system 2 and the fixed double-pulley system 3 is adjusted, the rigid sucker rod hanger 77 is lifted, the rigid sucker rod 78 is taken off, the fixing bolt at the lower part of the tower frame 41 is detached, the tower assembly 4 is withdrawn, and workover yielding is completed.
The intelligent control and drive system 6 comprises an intelligent control box 61, a load sensor 62, an electromagnetic brake, a rotating speed encoder and a planetary reducer variable frequency speed regulation motor 63; the planetary reducer variable frequency speed regulating motor 63 is connected with one end of the drum shaft 13, and one side of an output shaft of the planetary reducer variable frequency speed regulating motor 63 is provided with a rotating speed encoder and an electromagnetic brake; the load sensors 62 are mounted under the two bearing blocks 12; the intelligent control box 61 is respectively electrically connected with the load sensor 62, the electromagnetic brake, the rotating speed encoder and the planetary reducer variable frequency speed regulation motor 63;
the oil extraction wellhead system 7 comprises a casing 71, a paraffin removal valve 72, an oil pipe tee 73, a casing four-way 74, an oil pipe hanging seat 75, a packing box 76, a rigid sucker rod hanger 77, a rigid sucker rod 78, an oil pipe 79, a pump pull rod 710, a plunger 711 and a pump cylinder 712, wherein all rod pieces and pipe fittings are arranged on an axis; the oil pipe 79 is arranged in the oil production well, the oil pipe 79 is sequentially provided with the paraffin removal valve 72, the oil pipe tee 73 and the sleeve four-way 74 from top to bottom, the packing box 76 is arranged at the upper part of the oil pipe 79, the oil pipe 79 is fixed at the upper part in the sleeve 71 through the oil pipe hanging seat 75, and the lower part of the oil pipe 79 is fixedly connected with the pump barrel 712; the oil pipe hanging seat 75 is arranged on the sleeve four-way joint 74; the upper end of the rigid sucker rod 78 is connected with the flexible polished rod 16 which passes through the pulley rope slotted holes of the movable double-pulley system 2 and the fixed double-pulley system 3 through a rigid sucker rod hanger 77, and the lower end of the rigid sucker rod 78 is fixedly connected with the upper end of the pump pull rod 710; the lower end of the pump pull rod 710 is fixedly connected with the upper end of the plunger 711; the plunger 711 reciprocates up and down in the pump cylinder 712.
When the device is installed, the casing four-way joint 74 for fixing the oil pipe hanging seat 75 is installed at the ground end of the casing 71, then the pump cylinder 712 is put into the casing 71, the upper end of the pump cylinder 712 is connected with the oil pipe 79, the oil pipe hanger is installed at the ground end of the oil pipe 79, then the plunger 711 and the pump pull rod 710 are put into the oil pipe 79, the upper end of the pump pull rod 710 is connected with the rigid sucker rod 78 to a wellhead, the rigid sucker rod 78 is hung on the oil pipe hanger by using the cushion fork, the tower assembly 4 withdrawn backwards is moved forwards to a preset position, and the stroke total length central point is aligned with the center of the wellhead paraffin removal valve 72. The free end of the flexible polish rod 16 is passed through a paraffin removal valve 72 and a tubing tee 73. After the rigid sucker rod hanger 77 is fixed at the free end of the flexible polished rod 16, the male buckle of the rigid sucker rod 78 on the cushion fork is connected by the female buckle joint of the rigid sucker rod hanger 77, and then the rigid sucker rod hanger is connected to the oil pipe tee 73 and the oil pipe hanging seat 75, fastened and then connected with the paraffin removal valve 72 and the oil pipe tee 73. And after the installation is finished, the operation can be debugged.
The movable double-pulley system 2 comprises a left movable pulley 21, a right movable pulley 22, a pulley bracket 23, a movable track 24, a traction screw 25, a driven chain wheel nut 26 and a nut bracket 27; the pulley bracket 23 is mounted on a moving rail 24; the moving track 24 is fixedly arranged on a nut bracket 27; pressure bearings are respectively arranged on the shafts of the left moving pulley 21 and the right moving pulley 22, the left moving pulley 21 and the right moving pulley 22 are respectively arranged at two ends of the pulley bracket 23 through supporting shafts, and the left moving pulley 21 and the right moving pulley 22 are respectively connected with one end of a traction screw 25 which is correspondingly arranged; the other end of the traction screw 25 is in threaded connection with a driven chain wheel nut 26, and the thread pitch of the traction screw 25 and the driven chain wheel nut 26 is equal to the diameter of the flexible polished rod 16; the driven chain wheel nut 26 is arranged on a nut bracket 27 through a pressure bearing, and the outside of the driven chain wheel nut 26 is connected with the main transmission chain wheel 15 through the transmission chain 8; the nut bracket 27 is fixedly connected with the tower frame 41.
The fixed double-pulley system 3 comprises a left fixed pulley 31, a right fixed pulley 32 and a pulley fixed base 33; the left fixed pulley 31 and the right fixed pulley 32 are respectively installed on the tower frame 41 through the pulley fixing base 33. During operation, the two pulleys of the left fixed pulley 31 and the right fixed pulley 32 move to the central position, and the circle centers of the two pulley rope grooves are fixed and locked after a gap of 1-2 mm is ensured. When the well repairing operation gives way, the left fixed pulley 31 and the right fixed pulley 32 move outwards to the left and the right by a distance larger than the diameter of the flexible polished rod 16 and are fixed well.
The middle point of the connecting line of the circle centers of the two pulley rope grooves of the fixed double-pulley system 3 is downwards aligned with the center of the oil extraction wellhead, the middle point of the connecting line of the circle centers of the two pulley rope grooves of the fixed double-pulley system 3 is upwards aligned with the stroke middle point of the flexible polished rod 16 in the centibas spiral groove on the roller body 14, and an included angle alpha formed by the connecting line from the middle point of the connecting line of the circle centers of the two pulley rope grooves of the fixed double-pulley system 3 to the tangent point of the first circle of rope outlet at the stroke start of the roller body 14, and the connecting line from the middle point of the connecting line of the circle centers of the two pulley rope grooves of the fixed double-pulley system 3 to the tangent point of the last circle of rope outlet at the stroke end of the roller body 14 is smaller than or equal to 3.
The main drive sprocket 15 comprises a right drive sprocket and a left drive sprocket, and the left and right drive sprockets are connected with left and right driven sprocket nuts 26 through left and right drive chains 8. The left driven sprocket nut 26 is mounted on the left nut bracket 27 through a pressure bearing, and the left traction screw 25 is sleeved on the left driven sprocket nut 26. The left traction screw 25 is fixedly connected with one side of the pulley bracket 23, the pulley bracket 23 is connected with the left moving rail 24 through a sliding sleeve, and the left moving rail 24 is fixedly arranged on the left nut bracket 27. The driven chain wheel screw nut 26 on the right side is installed on the screw nut support 27 on the right side through a pressure bearing, the traction screw rod 25 on the right side is sleeved on the driven chain wheel screw nut 26 on the right side, and the traction screw rod 25 on the right side is fixedly connected with the other side of the pulley support 23. The left and right traction screw rods 25 and the left and right driven chain wheel nuts 26 have the same pitch and the same direction of rotation. The right moving track 24 is fixedly arranged on the right nut bracket 27; when the planetary reducer variable frequency speed regulating motor 63 drives the drum shaft 13 to rotate, the right driving sprocket and the left driving sprocket rotate simultaneously, and the driving chains 8 on the left side and the right side drive the driven sprocket nuts 27 on the left side and the right side to rotate in the same speed and the same direction, because the number of teeth of the main driving sprocket 15 and the driven sprocket nuts 26 is equal. And simultaneously drives the traction screw rods 25 on the left side and the right side to move left and right. The traction screw rods 25 on the left side and the right side drive the pulley support 23 to move left and right, the traction screw rods 25 move one pitch every 1 rotation, and because one pitch is equal to the diameter of the flexible polished rod 16, the traction screw rods 25 move one pitch every one rotation of the roller body 14, and the left moving pulley 21 and the right moving pulley 22 move a distance of one rope diameter, so that the flexible polished rod 16 is prevented from being bent at the tangent point of the inner cylindrical surface of the rope accommodating groove of the roller body 14.
The midpoint of the total number of turns included in the total stroke length of the flexible polished rod 16 is a tangent point, and a tangent formed by the flexible polished rod 16 and the cylindrical surface of the rope-receiving groove of the roller body 14 is downward aligned with the center of the paraffin removal valve 72 of the oil recovery wellhead system 7. The drum shaft 13 is spatially perpendicular to the shafts of the left and right moving pulleys 21 and 22 and the shafts of the left and right fixed pulleys 31 and 32. And as can be seen from fig. 1, when the left moving pulley 21 and the right moving pulley 22 are in the middle position, the flexible polished rod 16 and the cylindrical surface of the rope containing groove of the roller body 14 form a tangent point, the middle point of the connecting line of the centers of the two wheels of the left moving pulley 21 and the right moving pulley 22, the middle point of the connecting line of the centers of the two wheels of the left fixed pulley 31 and the right fixed pulley 32, and the four points of the center of the paraffin removal valve 72 are collinear. The included angle alpha formed by the connecting line of the middle point of the connecting line of the centers of the left fixed pulley 31 and the right fixed pulley 32 and the starting point of one stroke of the flexible polished rod 16 in the rope containing groove of the roller body 14 and the connecting line of the end points of the same stroke is less than or equal to 3 degrees. The bending damage degree of the rope outlet part of the roller body 14 is reduced, so that the fatigue damage resistance of the flexible polished rod 16 is improved.
The attached figures 2 and 3 are the stress analysis of the flexible polished rod of the horizontal type machine. It can be seen from the figure that at the tangent point between the rope outlet of the flexible polished rod 16 and the tangent line of the cylindrical surface in the rope containing groove of the roller body 14, at the rope inlet of the rope groove of the fixed pulley at the well mouth and at the tangent points at both sides, there are inflection points and bends. And the wrap angle phi on the wellhead fixed pulley is less than 90 degrees, so the bending and extrusion damage of the model is the most serious.
The bending angle beta of the flexible polished rod 16 in the drawing 3 at the tangent point of the inner cylindrical surface of the rope containing groove of the winch roller1Is also dependent on the distance between the wellhead fixed pulley and the roller body 14 and the number of turns of the total length of travel. The two types of flexible polished rods 16 are bent at the tangent point without pulley support, the larger the included angle alpha is, the larger the bending angle beta is1The smaller the bend failure, the more severe. At the same distance, the longer the stroke, the bending angle beta1The smaller the bending failure, the more severe the bending failure and vice versa the more minor the bending failure. Beta is a2For the bending angle, phi, formed by the flexible polish rod in the rope groove of the fixed pulley at the well head1The wrap angle of the flexible polished rod on the fixed double pulleys is formed.
FIG. 4 is a stress analysis diagram of a vertical type winch oil extraction device, in which a flexible polished rod 16 is arranged at a rope outlet tangent point of an inner cylindrical surface of a rope accommodating groove of a roller body 14Bending angle beta of1Depends on the distance between the middle point of the center connecting line of the two wheels of the fixed double pulleys and the winch drum and the stroke length, and on the premise of constant distance, beta1The angle is also a variable, and is changed along with the winding and unwinding of the number of turns, and beta is at the starting point and the ending point of the stroke1The angle is largest. The wrap angle Φ of the flexible polished rod 16 over the pulley depends on the pulley diameter and is inversely proportional to the pulley diameter. Phi1Wrap angle beta formed by flexible polished rod on fixed double pulleys2The flexible polished rod forms a bending angle in a fixed pulley rope groove of the wellhead.
Fig. 5 is a stress analysis diagram of the flexible polished rod 16 in the model of the utility model. As can be seen in fig. 5, the flexible polished rod 16 is supported by the movable pulley at the inflection point of the bend at the tangent point of the inner cylindrical surface of the rope-receiving groove of the roller body 14, and the diameter of the pulley is large enough so that there is no bending stress at the inflection point. The diameters and the numbers of teeth of the main drive chain wheel 15 and the driven chain wheel screw nut 26 are equal. The thread pitches of the two traction screw rods 25 are equal to the diameter of the flexible polished rod 16, so that the left movable pulley 21 and the right movable pulley 22 are ensured to rotate synchronously with the roller body 14. The tangent point is not bent, so that the bending damage of the pulley-free support is overcome. Phi1The wrap angle formed by the flexible polished rod on the moving double pulleys ensures the reasonable diameter of the pulleys and increases the wrap angle phi1Bending and frictional damage on the pulley is reduced. The machine type of the utility model basically solves the problem of bending, extruding and damaging of the flexible polished rod, ensures the operation reliability of the equipment and reduces the later maintenance cost.
Claims (4)
1. Tower frame formula intelligent control long stroke does not have beam-pumping unit, characterized by: comprises a winch roller assembly (1), a movable double-pulley system (2), a fixed double-pulley system (3), a tower frame assembly (4), a workover yielding mechanism (5), an intelligent control and drive system (6) and an oil extraction wellhead system (7),
the tower assembly (4) comprises a tower frame (41), a frame upper platform (42), a ladder (43) and tower bottom fixing section steel (44), and the tower assembly (4) is fixedly arranged above the oil extraction wellhead through the tower bottom fixing section steel (44); a frame upper platform (42) is fixedly installed at the upper part of the tower frame (41), a ladder (43) is arranged at the side part of the tower frame (41), and tower bottom fixing section steel (44) is arranged at the lower part of the tower frame (41); the movable double-pulley system (2) and the fixed double-pulley system (3) are vertically arranged in the middle of the tower assembly (4);
the winch drum assembly (1) is arranged at the upper part of the upper platform (42) of the frame and comprises an assembly base (11), a bearing seat (12), a drum shaft (13), a drum body (14), a main transmission chain wheel (15) and a flexible polished rod (16); the assembly base (11) is fixedly arranged at the upper part of the upper platform (42) of the frame, and two ends of the assembly base (11) are respectively and fixedly provided with a bearing seat (12); two ends of the roller shaft (13) are respectively connected with the bearing seats (12), two ends of the roller shaft (13) are respectively connected with the main transmission chain wheel (15), and the middle part of the roller shaft (13) is sleeved with the roller body (14); a centi-Past spiral groove is formed in the cylindrical surface in the rope accommodating groove of the roller body (14); one end of the flexible polished rod (16) is fixedly connected with one end of the roller body (14), the flexible polished rod (16) is embedded into the centi-Pass spiral groove and surrounds the outer cylindrical surface of the roller body (14) along the groove, and the other end of the flexible polished rod (16) sequentially penetrates through pulley rope groove holes of the double pulleys of the movable double-pulley system (2) and the fixed double-pulley system (3);
the workover yielding mechanism (5) comprises a yielding roller box (51) and a yielding track (52); the abdicating track (52) is arranged on two sides of the wellhead; the abdicating roller boxes (51) are fixedly arranged on two sides of the bottom of the tower frame (41), and the abdicating roller boxes (51) are connected with the abdicating track (52) through rollers;
the intelligent control and drive system (6) comprises an intelligent control box (61), a load sensor (62), an electromagnetic brake, a rotating speed encoder and a planetary reducer variable frequency speed regulation motor (63); the planetary reducer variable-frequency speed regulating motor (63) is connected with one end of the drum shaft (13), and a rotating speed encoder and an electromagnetic brake are installed on one side of an output shaft of the planetary reducer variable-frequency speed regulating motor (63); the load sensors (62) are arranged below the two bearing seats (12); the intelligent control box (61) is respectively and electrically connected with the load sensor (62), the electromagnetic brake, the rotating speed encoder and the planetary reducer variable-frequency speed regulation motor (63);
the oil extraction wellhead system (7) comprises a casing (71), a paraffin removal valve (72), an oil pipe tee joint (73), a casing four-way joint (74), an oil pipe hanging seat (75), a packing box (76), a rigid sucker rod hanger (77), a rigid sucker rod (78), an oil pipe (79), a pump pull rod (710), a plunger (711) and a pump barrel (712); the oil pipe (79) is arranged in the oil production well, the oil pipe (79) is sequentially provided with a paraffin removal valve (72), an oil pipe tee joint (73) and a sleeve four-way joint (74) from top to bottom, the upper part of the interior of the oil pipe (79) is provided with a packing box (76), the oil pipe (79) is fixed on the lower part of the sleeve (71) through an oil pipe hanger, and the lower part of the oil pipe (79) is fixedly connected with the pump barrel (712); the oil pipe hanging seat (75) is arranged on the sleeve four-way joint (74); the upper end of the rigid sucker rod (78) is connected with a flexible polished rod (16) which passes through the pulley rope slotted holes of the movable double-pulley system (2) and the fixed double-pulley system (3) through a rigid sucker rod hanger (77), and the lower end of the rigid sucker rod (78) is fixedly connected with the upper end of a pump pull rod (710); the lower end of the pump pull rod (710) is fixedly connected with the upper end of the plunger (711); the plunger (711) reciprocates up and down in the pump cylinder (712).
2. The tower-type intelligent control long-stroke walking-beam-free pumping unit according to claim 1, which is characterized in that: the movable double-pulley system (2) comprises a left movable pulley (21), a right movable pulley (22), a pulley bracket (23), a movable track (24), a traction screw rod (25), a driven chain wheel screw nut (26) and a screw nut bracket (27); the pulley bracket (23) is arranged on the moving track (24); the moving track (24) is fixedly arranged on the nut bracket (27); pressure bearings are respectively arranged on shafts of the left moving pulley (21) and the right moving pulley (22), the left moving pulley (21) and the right moving pulley (22) are respectively arranged at two ends of the pulley bracket (23) through supporting shafts, and the left moving pulley (21) and the right moving pulley (22) are respectively connected with one end of a correspondingly arranged traction screw rod (25); the other end of the traction screw rod (25) is in threaded connection with a driven chain wheel nut (26), and the thread pitch of the traction screw rod (25) and the driven chain wheel nut (26) is equal to the diameter of the flexible polished rod (16); the driven chain wheel screw nut (26) is connected with the tower frame (41) through a screw nut support (27), and the outer portion of the driven chain wheel screw nut (26) is connected with the main driving chain wheel (15) through the driving chain (8).
3. The tower-type intelligent control long-stroke walking-beam-free pumping unit according to claim 1, which is characterized in that: the fixed double-pulley system (3) comprises a left fixed pulley (31), a right fixed pulley (32) and a pulley fixed base (33); the left fixed pulley (31) and the right fixed pulley (32) are respectively installed on the tower frame (41) through pulley fixed bases (33).
4. The tower-type intelligent control long-stroke walking-beam-free pumping unit according to claim 1, which is characterized in that: the midpoint of a connecting line of the centers of the two pulley rope grooves of the fixed double-pulley system (3) is downwards aligned with the center of the oil extraction wellhead, the midpoint of a connecting line of the centers of the two pulley rope grooves of the fixed double-pulley system (3) is upwards aligned with the stroke midpoint of the flexible polished rod (16) in the Cmpbus spiral groove on the roller body (14), and an included angle alpha formed by a connecting line from the midpoint of the connecting line of the centers of the two pulley rope grooves of the fixed double-pulley system (3) to a tangent point of a first circle of rope outlet at the beginning of the stroke of the roller body (14), a connecting line from the midpoint of the connecting line of the centers of the two pulley rope grooves of the fixed double-pulley system (3) to a connecting line of a last circle of rope outlet tangent point at the ending of the stroke of the roller body (14) is smaller than or equal to 3 degrees.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115431211A (en) * | 2022-09-13 | 2022-12-06 | 成都信息工程大学 | Reactor core detector installation device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115431211A (en) * | 2022-09-13 | 2022-12-06 | 成都信息工程大学 | Reactor core detector installation device and method |
| CN115431211B (en) * | 2022-09-13 | 2023-06-20 | 成都信息工程大学 | Reactor core detector mounting device and method |
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Effective date of registration: 20221109 Address after: 138000 Yada industrial concentration area, Ning Jiang District, Songyuan, Jilin Patentee after: SONGYUAN CITY FORWARD PETROLEUM ENGINEERING MACHINERY Co.,Ltd. Address before: 138000 Room 102, building 2, Jinjiang Community Bureau, Fanrong street, Ningjiang district, Songyuan City, Jilin Province Patentee before: Hu Yong |