CN2427648Y

CN2427648Y - Novel and beam type direct balancing oil suction machine

Info

Publication number: CN2427648Y
Application number: CN 00235691
Authority: CN
Inventors: 钟有学
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-23
Filing date: 2000-06-23
Publication date: 2001-04-25
Anticipated expiration: 2010-06-23

Abstract

The utility model relates to a novel oil pumping machine with a walking beam directly balanced, which is composed of a motor (10), a speed reducer (4), a crank (3), a connecting rod (6), a walking beam (8), a cambered surface (7), a cambered surface (9), a balance weight (11), and an oil pumping rod (14). The utility model is characterized in that the oil pumping rod (14) is suspended on the cambered surface (7) by utilizing a suspension rope, the balance weight is suspended on the cambered surface (9) by utilizing the suspension rope, and the conical angle of the cambered surface (9) is much less than the conical surface of the cambered surface (7), so that an anti-blowing oil pumping machine with a walking beam directly balanced is formed. Compared with a general walking beam machine, the utility model has the advantages of simplicity, firmness, and reliability. In addition, the balancing effect is favorable, the power consumption is reduced, and the cost of oil production is lowered.

Description

The pumping unit of the direct balance of novel beam

The pumping unit of the direct balance of walking beam that the utility model relates to, belong to a kind of ground installation that the slide beam mechanical oil recovery is used.

Pumping unit is one of main ground installation of suction crude oil.What our times various countries ground machine oil production equipment commonly used adopted more than 80 percent is beam-pumping unit.But what most beam-pumping units all adopted is crank balance, and the beam-pumping unit counterbalance effect of crank balance is poor, the energy consumption height, and people attempt the beam-pumping unit of crank balance is made into the pumping unit (seeing accompanying drawing 4) of the direct balance of walking beam again.Adopt the pumping unit of the direct balance of walking beam to compare the 20-30% that generally can economize on electricity with the pumping unit of crank balance, but the balancer weight lifting rope is oversize, when being subjected to wind, balancer weight swings back and forth, and pumping unit is rocked, and loss of stability influences its popularization in the oil field.

The purpose of this utility model provides the pumping unit of the direct balance of a kind of novel beam, this machine not only has good energy-saving effect, and the pumping unit that can also overcome the direct balance of old-fashioned walking beam is when being subjected to wind, and balancer weight swings back and forth, and makes the shortcoming of pumping unit loses stability.

The purpose of this utility model realizes by following scheme, the pumping unit of the old-fashioned direct balance of walking beam has a walking beam at a top of the trellis, each makes to have a cambered surface at the two ends of walking beam, the cone angle of two cambered surfaces equates (seeing accompanying drawing 4), the cambered surface of front is hung sucker rod, the cambered surface of back is hung balancer weight, such structure, and the balancer weight lifting rope is oversize.The top that the present embodiment is hung the cambered surface of balancer weight with this pumping unit take down minimum half, so that cone angle diminishes, to reduce the twining amount of lifting rope on cambered surface, thereby the balancer weight lifting rope is shortened greatly, improved the ability that the balancer weight wind resistance blows, prevented that balancer weight is subjected to windage, swung back and forth and cause the pumping unit support to rock.

Further describe the utility model embodiment below with reference to the accompanying drawings.

Fig. 1 is the drive mechanism schematic diagram of the direct balanced oil extractor of novel beam;

Fig. 2 is the heavy key plan of the up transient equilibrium of sucker rod;

Fig. 3 is the heavy key plan of the descending transient equilibrium of sucker rod;

Fig. 4 is the direct balanced oil extractor of old-fashioned walking beam.

Referring to Fig. 1, the pumping unit of the direct balance of novel beam is by motor (10), support (2), crank (3), retarder (4), connecting rod (6), walking beam (8), cambered surface (7), cambered surface (9), balance (11), and sucker rod (14) and brake (12) are formed.The unidirectional rotation of motor (10) drives retarder crank (3) rotation through belt (1) and retarder (4), and crank (3) drives walking beam (8) through connecting rod (6) and swings up and down, and each makes to have a cambered surface (7) and a cambered surface (9) two ends of walking beam (8).The lifting rope (5) of sucker rod (14) is suspended on the cambered surface (7), the lifting rope of balancer weight (11) is suspended on the cambered surface (9), walking beam (8) will drive sucker rod (14) when swinging up and down and balancer weight (11) back and forth rises and descends, reach the purpose of suction crude oil from oil well, balancer weight (11) be used to the to offset load of sucker rod reduces the moment of torsion of crankshaft.Brake (12) is used for guaranteeing that walking beam is parked in the arbitrary position when the maintenance pumping unit.

Shorten length of steel wire rope in embodiments, raising pumping unit wind resistance blows the purpose of ability to be implemented by Fig. 1.Walking beam among Fig. 1 (8) is installed in the top of support (2), same support (2) is articulated and connected, the front portion of walking beam (8) is a straight beam, the downward-sloping several angle in back, front end is equipped with the cambered surface (7) of the lifting rope (5) that hangs sucker rod (14), the cambered surface (9) of the lifting rope (13) of hanging balancing heavy (11) is equipped with in the rear end, the same cambered surface of cambered surface (9) (7) is compared, the top of its cambered surface cone angle is cancelled, so that cone angle diminishes, thereby can guarantee at the pumping unit operation process, the lifting rope (5) of sucker rod (14) all the time and cambered surface (7) tangent, and near the lifting rope (13) of balancer weight (11) same cambered surface (9) tangent (seeing accompanying drawing 2) just sucker rod (14) drops to the bottom time, not tangent (seeing accompanying drawing 3) spared in all the other positions.The twining amount of lifting rope (13) on cambered surface (9) of balancer weight (11) significantly reduced, thus just might lifting rope (13) do short as much as possible, reduced the swing of balancer weight (11) when being subjected to wind, improved the stability of pumping unit support.Sometimes, according to the needs of design parameter, the cambered surface among Fig. 1 (9) also can make and face directly.

In the present embodiment, in order to guarantee that balancer weight can be sagging naturally when the same cambered surface of balance lifting rope (13) (9) is not tangent, lifting rope in Fig. 3 (13) and cambered surface (9) adopt hinge to connect.

In Fig. 2 and Fig. 3, when sucker rod (14) falls from the top, the arm of force b when arm of force a of balancer weight (11) promotes from the bottom less than sucker rod (14), when this just in time meets pumping unit work, sucker rod promotes the transient equilibrium moment of torsion and wants big, decline transient equilibrium moment of torsion is wanted little requirement, and therefore, the pumping unit of the direct balance of this novel beam has good runnability.

The pumping unit of the direct balance of novel beam of the present utility model is a kind of mutation of common beam pumping unit, thereby have with equally simple, sturdy, the reliable advantage of common beam pumping unit, and can realize the direct balance of walking beam again, good balance effect, overcome the big shortcoming of common beam pumping unit Peak torque, increased the lifting capacity of pumping unit, reduced power consumpiton, reduced cost for oil production, low cost of manufacture.

Claims

1, the pumping unit of the direct balance of a kind of novel beam, by motor (10), retarder (4) crank (3), connecting rod (6), Xuan Liang (8), arc shaped surface (7), arc shaped surface (9), balancer weight (11), sucker rod (14), brake (12) is formed, it is characterized in that the top that walking beam (8) is installed in support (2) links directly with support (2), the front portion of walking beam (8) is a straight beam, the downward-sloping several angle in rear portion, front end is equipped with the cambered surface (7) of the lifting rope (5) that hangs sucker rod (14), the cambered surface (9) of the lifting rope (13) of hanging balancing heavy (11) is equipped with in the rear end, same cambered surface (7) is compared, and the cone angle of cambered surface (9) is little.

2, the pumping unit of the direct balance of novel beam according to claim 1, cambered surface (9) both cambered surface also can be to face directly.

3, the pumping unit of the direct balance of novel beam according to claim 1, lifting rope (13) and cambered surface (9) adopt the hinge contact.