CN201173104Y

CN201173104Y - Composite balancing beam type oil pumping machine possessing load loss protection function

Info

Publication number: CN201173104Y
Application number: CNU2008200101271U
Authority: CN
Inventors: 姜成华; 鲁会策; 徐冬
Original assignee: Individual
Current assignee: Liaoning Xinke Petroleum Equipment Manufacturing Co Ltd
Priority date: 2008-01-08
Filing date: 2008-01-08
Publication date: 2008-12-31
Anticipated expiration: 2018-01-08

Abstract

The utility model relates to a compound beam-balanced pumping unit with load loss protection function, which is composed of a walking beam balancing weight, an extension joint, a pull rod, an adjustable torque changing walking beam balancing mechanism, a supporting frame, an air pressure balancing load loss protection device, a horse head, a hydraulic coupler, a motor crank, a connecting rod, a butterfly-shaped spring and an elastic tail axle supporting seat. The adjustable torque changing walking beam balancing mechanism composed of the walking beam balancing weight, the extension joint and the pull rod is arranged at the tail part of a walking beam of an oil pumping machine, and the air pressure balance load loss protection device is installed in front of the shaft of the supporting frame of the oil pumping machine. The conception of the compound beam-balanced pumping unit is novel, the design is reasonable, the work is reliable, through the adoption of the adjustable torque changing walking beam balancing mechanism and the air pressure balance load loss protection device, the precise balance of a beam-pumping unit can be achieved, the energy conservation can be realized, and the machine overturning accident of the oil pumping machine caused by the load loss can be effectively prevented, and the compound beam-balanced pumping unit is advantageous to the oil field safe production.

Description

A kind of composite beam-balance pump with mistake year defencive function

Technical field

The utility model relates to a kind of plant equipment that oil field pumping well is produced that is used for, and belongs to the oil recovery machiner equipment class.

Background technology

For a long time, traditional beam pumping unit is the main mechanical that oil field pumping well production is adopted always.At present, this of field by using kind of oil pumper still exists certain shortcoming and defect on balance mode, time-consuming when conventional beam pumping unit is not only adjusted balance, take a lot of work, require great effort, also there is the very big energy saving space, and, rod parting or crank-pin cause that oil pumper loses when carrying when losing efficacy, can turn over the machine accident, the safety in production of oil well is constituted a threat to.

The utility model content:

The purpose of this utility model was to provide a kind of not only can having prevented to turn over the machine accident but also can use plural equilibrium and realize to greatest extent that energy-conservation having lost and carry a defencive function composite beam-balance pump because of oil pumper loses to carry to cause.

The utility model is to realize like this.This kind oil pumper loses a year protective device, horse head, fluid coupling, motor, crank, connecting rod, butterfly spring and elasticity tailing axle bearing by beam counterweight, expansion coupling, pull bar, adjustable variable-pitch beam balanced controls, support, air pressure balance and forms; in the adjustable walking beam bending moment mechanism that oil pumper walking beam afterbody is provided with that balance weight, expansion coupling, pull bar constitute, air pressure balance is installed before the oil pumper support shaft loses and carry a protective device.Wherein motor, fluid coupling, shaft coupling, reducer are formed the dynamical system of oil pumper, four-bar mechanism that drive walking beam, support, crank, connecting rod constitute and the horse head that is fixed on the walking beam front end, finish moving up and down, the sucker rod and the oil well pump that drive in the pit shaft carry out oil pumping work; On the oil pumper general structure basis of invariable that above-mentioned conventional components constitutes, the air pressure balance before being installed in the adjustable variable-pitch beam balanced controls that beam counterweight, expansion coupling, the pull bar of oil pumper afterbody constitute and being installed in the oil pumper support shaft loses and carries the plural equilibrium that protective device is together to form this oil pumper.The operating principle of this compound balanced pumping unit is as follows: in the adjustable variable-pitch beam balanced controls, the expansion coupling in the walking beam cavity promotes the balance weight fork by changing the distance of balance weight and oil pumper rack shaft holder, can accurately adjust the trimming moment of oil pumper; Air pressure balance loses and carries protective device is cylinder compression energy storage device, when pumping unit horsehead is descending, and air compression in the cylinder, compressed air released energy when horse head was up, and whole stroke beam rear part balance weight realizes the plural equilibrium of oil pumper.Air pressure balance loses year another important use of protective device and loses a year protection exactly; when occurring rod parting or crank-pin inefficacy in the production of recovering the oil; oil pumper takes place to lose and carries; this moment, instantaneous load increased suddenly; piston rod surpasses the real work scope; the upper and lower stop ring washer that is provided with on the piston rod can seal guide with protective device and contact with pressure cap; implement position limitation protection; as rod parting then protective device hold walking beam and no longer continue swing; when crank-pin lost efficacy; protective device will prop up walking beam, thereby avoid accident to take place.

The utility model is novel; reasonable in design; reliable operation; use adjustable variable-pitch beam balanced controls and air pressure balance and lose a year protective device; this kind beam pumping unit can accurate balance; realizing energy-conservationly, and preventing effectively that oil pumper from because of lose carrying the machine that the turns over accident that causes, helping oil security production.

Description of drawings

Fig. 1 is a general structure schematic diagram of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 carries the protective device structural representation for air pressure balance loses.

Fig. 4 is adjustable variable-pitch beam balanced controls structural representation.

Fig. 5 is an elasticity tailing axle seat structure schematic diagram.

The specific embodiment

As 1 figure, shown in Figure 2, the utility model is made up of beam counterweight 1, expansion coupling 2, pull bar 3, walking beam 4, support shaft 5, an air pressure balance mistake year protective device 6, horse head 7, motor 11, fluid coupling 8, shaft coupling 9, reducer 10, crank 12, connecting rod 13, disk spring 14, elasticity tailing axle bearing 15, the dynamical system that constitutes by motor 11, fluid coupling 8, shaft coupling 9, reducer 10 wherein, the four-bar mechanism that is made of walking beam 4, support 5, crank 12, connecting rod 13 is identical with conventional pumping unit with the horse head 7 structure annexations that are fixed on walking beam 4 front ends; Be provided with balance weight 1, expansion coupling 2, the adjustable variable-pitch beam balanced controls of pull bar 3 formations at oil pumper walking beam 4 afterbodys, air pressure balance be installed before oil pumper support shaft 5 lose a year protective device 6.

As shown in Figure 3, an air pressure balance mistake year protective device 6 is made up of upper connecting base 16, lower connecting base 28, lower dead center ring washer 17, top dead centre ring washer 23, piston rod 18, pressure cap 19, pilot seal circle 20, guide holder tube 21, air pressure cylinder barrel 22, one way valve 24, piston 25, piston ring 26, pressure limiting valve 27.Be provided with piston rod 18 in the air pressure cylinder barrel 22, its upper end is provided with upper connecting base 16, lower dead center ring washer 17, pressure cap 19, pilot seal circle 20 and guide holder tube 21, the bottom is provided with top dead centre ring washer 23, one way valve 24, piston 25, piston ring 26 are equipped with in the lower end, and pressure limiting valve 27 and lower connecting base 28 are equipped with in air pressure cylinder barrel 22 lower ends.Air when piston 25 moves downward in the compression gas-pressure cylinder barrel 22 expands, and one way valve 24 guarantees not produce negative pressure in the cylinder; Pressure was no more than rated value when pressure limiting valve 27 guaranteed the air compression; Lower dead center ring washer 17 that is provided with on the piston rod 18 and top dead centre ring washer 23 are extreme position (when oil pumper loses and carries), and upper and lower stop ring washer is subjected to the position-limiting action of pressure cap 19, guide holder tube 21, guarantee that oil pumper avoids turning over the machine accident.

As shown in Figure 4, in the adjustable variable-pitch beam balanced controls, be provided with cycloidal-pin wheel reducer 40, thrust bearing 39, nut 38 and screw rod 37 in walking beam 4 chambeies.Driving screw rod 37 by cycloidal-pin wheel reducer 40 rotates in thrust bearing 39, nut 38 is done axis and is moved on screw rod 37, driving the expansion coupling 2 that fuses with nut 38 moves, promotion is by beam counterweight 1 swing that is connected with pull bar 3 than chain 36, change balance weight 1 and the big or small trimming moment of regulating oil pumper of the distance of 5 on support, realize the purpose of balance of well pumping unit.

As shown in Figure 5, elasticity tailing axle bearing 15 is made up of connecting rod head 29, supporting base 30, lever 31, adjustment nut 32, locking nut 33, core bar 34 disk springs 35, connecting rod head 29 is connected on the lever 31, lever 31 is fixed on the walking beam 4 by supporting base 30, lever 31 other ends are equipped with core bar 34, its outside is set with disk spring 35, and adjustment nut 32 and the locking nut 33 that is used for adjusting and locking disk spring 35 is equipped with in core bar 34 lower ends.

Claims

1; a kind of composite beam-balance pump with mistake year defencive function; by beam counterweight (1); expansion coupling (2); pull bar (3); walking beam (4); support (5); air pressure balance loses and carries protective device (6); horse head (7); motor (11); fluid coupling (8); shaft coupling (9); reducer (10); crank (12); connecting rod (13); disk spring (14); elasticity tailing axle bearing (15) is formed; it is characterized in that: be provided with balance weight (1) at oil pumper walking beam (4) afterbody; expansion coupling (2); the adjustable walking beam variable torque balance mechanism that pull bar (3) constitutes is equipped with air pressure balance and loses and carry a protective device (6) before oil pumper support (5) axle.

2, the composite beam-balance pump with mistake year defencive function according to claim 1 is characterized in that, the four-bar mechanism that walking beam (4), support (5), crank (12), connecting rod (13) adopt single connecting rod single crank to form.

3; composite beam-balance pump with mistake year defencive function according to claim 1; it is characterized in that; air pressure balance loses and carries protective device (6) by upper connecting base (16); lower connecting base (28); lower dead center ring washer (17); top dead centre ring washer (23); piston rod (18); pressure cap (19); pilot seal circle (20); guide holder tube (21); air pressure cylinder barrel (22); one way valve (24); piston (25); piston ring (26); pressure limiting valve (27) is formed; be provided with piston rod (18) in the air pressure cylinder barrel (22); its upper end is provided with upper connecting base (16); lower dead center ring washer (17); pressure cap (19); pilot seal circle (20) and guide holder tube (21); the bottom is provided with top dead centre ring washer (23); one way valve (24) is equipped with in the lower end; piston (25); piston ring (26), pressure limiting valve (27) and lower connecting base (28) are equipped with in air pressure cylinder barrel (22) lower end.

4, according to claim 1 have a composite beam-balance pump that lose to carry defencive function, it is characterized in that: be provided with cycloidal-pin wheel reducer (40), thrust bearing (39), nut (38) and screw rod (37) in walking beam (4) chamber in the adjustable walking beam variable torque balance mechanism.