CN209743125U - Self-adaptive counterweight structure of beam-pumping unit - Google Patents

Abstract

The utility model relates to a self-adaptive counterweight structure of beam-pumping unit, this self-adaptive counterweight structure locates the one end of keeping away from the horse head on the beam of pumping unit, including box, balancing weight, left spring, right spring and track, be equipped with balancing weight, left spring, right spring and track in the box, the balancing weight is movably arranged on the track, this track is laid in the bottom in the box, the one end of left spring and the one end of right spring are fixed relatively on the both sides of balancing weight respectively, the other end of left spring is fixed on the terminal surface of one side in the box, the other end of right spring is fixed on the terminal surface of the relative side in the box; when the balancing weight arranged on the track swings up and down on the walking beam, the balancing weight moves left and right under the action of gravity to increase or decrease the force arm, and the left spring and the right spring respectively realize buffering by stretching or compressing. The utility model discloses a practice thrift the purpose of energy consumption and can also eliminate the phenomenon of falling the electricity generation, reduce the equipment spoilage.

Description

Self-adaptive counterweight structure of beam-pumping unit

Technical Field

The utility model relates to the petroleum machinery field, in particular to self-adaptation counter weight structure of using on beam-pumping unit.

Background

The beam-pumping unit is widely applied to oil extraction equipment in oil fields due to the characteristics of simple structure and skin firmness and durability. In order to reduce the power of a driving motor, a counterweight structure is designed for the beam-pumping unit. The counterweight structure helps the motor to output power when the pumping unit strokes upwards, so as to lift the pumping rod; and the potential energy of the sucker rod is absorbed during the downstroke, the potential energy of the sucker rod is improved, and the energy recovery is realized.

The counterweight structure of the traditional pumping unit is relatively fixed at the initial stage of the upper stroke when the pumping unit works, the output of the counterweight can exceed the load required by a pumping rod, and a motor can be driven to perform inverted power generation; then the load of the sucker rod gradually increases to be balanced; the load of the sucker rod exceeds that of the balance weight in the initial stage of the downstroke, and the motor is driven to perform reverse power generation and then tends to balance along with the gradual reduction of the load of the sucker rod. The phenomenon of twice inverted power generation in each stroke process of the oil pumping unit does not waste a part of energy, and can also cause impact on some related electrical equipment, and the electrical equipment can be damaged in serious cases. Some pumping units with counterweights are available in the prior art, and some counterweights are fixed in position, and some counterweights can be adjusted in position but do not move along with the up-stroke and the down-stroke of the pumping unit. The applicant also filed an application of 201610658850.X utility model in 2016, and for a gravity-driven pumping unit, the pumping unit has designed a counterweight structure on the walking beam, which can be driven by the lead screw to move back and forth, and the counterweight structure moves back and forth along with the up-down stroke of the pumping unit, so as to change the force arm when the electric dragging mechanism drags the counterweight block to move back and forth, thereby adjusting the gravity center position to generate torque. Although the technology in the patent can realize the purposes of adjusting the gravity center, saving electric energy and reducing energy consumption, the defects of low efficiency and complex application exist in practical application, and equipment is upgraded and modified based on the defects.

Disclosure of Invention

An object of the utility model is to overcome the not enough of above-mentioned prior art existence, provide a self-adaptation counter weight structure of beam-pumping unit. The utility model discloses a beam-pumping unit's self-adaptation counter weight structure will accomplish along with the upper and lower stroke reciprocating motion of beam-pumping unit to accomplish automatically regulated, realized the purpose of practicing thrift the energy consumption and can also eliminate the phenomenon of generating electricity, reduce the equipment spoilage.

In order to achieve the above purpose, the present invention provides the following technical solutions:

A self-adaptive counterweight structure of a beam-pumping unit is arranged at one end, far away from a horse head, of a beam of the pumping unit and is characterized in that the self-adaptive counterweight structure comprises a box body, a counterweight block, a left spring, a right spring and a rail, wherein the counterweight block, the left spring, the right spring and the rail are arranged in the box body; when the balancing weight arranged on the track swings up and down on the walking beam, the balancing weight moves left and right under the action of gravity to increase or decrease the force arm, and the left spring and the right spring respectively realize buffering by stretching or compressing.

the utility model discloses an among the self-adaptation counter weight structure of beam-pumping unit, the outside profile of cross section of balancing weight is the same with the inside profile of cross section in the box, and the size is slightly littleer.

The utility model discloses an among the self-adaptation counter weight structure of beam-pumping unit, the bottom of balancing weight is equipped with the gyro wheel, this gyro wheel with the track cooperatees.

The utility model discloses an among the self-adaptation counter weight structure of beam-pumping unit, as further scheme design, bottom half be equipped with along two tracks of length direction parallel placement, the cooperation is every two gyro wheels around the track is equipped with.

The utility model discloses an among the self-adaptation counter weight structure of beam-pumping unit, as an implementation form, the box be the shell-like structure of cuboid, the inside cross section of this box is the rectangle, the balancing weight cross section be the rectangle.

the utility model discloses an among the self-adaptation counter weight structure of beam-pumping unit, the balancing weight when being located the intermediate position of box, left spring and right spring be in natural tension state.

The utility model discloses an among the self-adaptation counter weight structure of beam-pumping unit, set up relatively left side spring and right spring cover are established respectively and are established on a guide thick stick, should guide the thick stick and pass the balancing weight, the both ends of guide thick stick are fixed respectively on the both ends face of box inboard, the balancing weight on set up the through-hole that supplies the guide thick stick to run through.

The utility model discloses an among the self-adaptation counter weight structure of beam-pumping unit, left spring and right spring and the interior terminal surface hookup location punishment of box do not be equipped with the spring adjuster of adjusting spring length.

The utility model discloses an among the self-adaptation counter weight structure of beam-pumping unit, as an implementation, left spring and right spring be equipped with two, these two left springs or right spring horizontal arrangement relatively respectively.

The utility model discloses an among beam-pumping unit's self-adaptation counter weight structure, as an implementation, left spring and right spring be equipped with two relatively respectively, vertical range about these two left springs or right spring.

Based on the technical scheme, the utility model discloses beam-pumping unit's self-adaptation counter weight structure compares with prior art and has following technical advantage:

1. The utility model discloses beam-pumping unit has adopted a self-adaptation counter weight structure, and this self-adaptation counter weight structure can be along with the fore-and-aft motion when the pumping unit upstroke moves with down stroke, and then adjusts the arm of force size, increases the arm of force size and then increases the pulling force when through the upstroke, then reduces because of falling the electricity generation phenomenon and cause the impact to equipment through reducing the arm of force size when the down stroke to play the energy saving and reduce the purpose of damaging.

2. The utility model discloses an one end that has adopted to keep away from the horse head on the walking beam among the counter weight structure of self-adaptation sets up the form of box and realizes, can realize the protection to the inner part through the design of box, through the box structure of the fixed integration in the one end of walking beam, presents self-adaptation counter weight structure wholeization, is convenient for install and dismantle, has the advantage that the outward appearance is succinct, simple to operate and convenient to use.

3. The utility model discloses an arm of force is realized adjusting through the balancing weight that has designed in the box that can reciprocating motion in the counter weight structure of self-adaptation, and this balancing weight is placed in the track, ensures that the back and forth movement of balancing weight is controllable in order, and we have still designed respectively in the both sides of balancing weight and have controlled the spring, through the compression and the extension of spring, has abundant buffering when guaranteeing the balancing weight motion, avoids violent movement to cause the impact, realizes the stationary motion of position.

Drawings

Fig. 1 is the whole structure diagram of the self-adaptive counterweight structure of the beam-pumping unit.

Fig. 2 is the schematic diagram of the self-adaptive counterweight structure in the beam-pumping unit of the utility model.

Fig. 3 is a schematic diagram of the position of the adaptive counterweight structure of the beam-pumping unit on the upper stroke.

Fig. 4 is the position schematic diagram of the self-adaptive counterweight structure of the beam-pumping unit in the lower stroke.

Fig. 5 is a schematic diagram of another adaptive counterweight structure in the beam-pumping unit of the present invention.

Fig. 6 is a schematic diagram of another adaptive counterweight structure in the beam-pumping unit of the present invention.

Detailed Description

In the following, we will make further detailed explanation on the adaptive counterweight structure of a beam-pumping unit according to the present invention with reference to the accompanying drawings and specific embodiments, so as to clearly understand the structural form and the working mode thereof, but not to limit the protection scope of the present invention.

Example 1

The embodiment shown in fig. 1 is a novel beam pumping unit, wherein an adaptive counterweight structure is arranged at one end of the pumping unit, and the adaptive counterweight structure 3 is arranged at one end, far away from a horse head 1, of a walking beam 2 of the pumping unit. The middle part of walking beam 2 sets up on support 4, and the bottom of support 4 is fixed on base 5, still is equipped with motor 8 on base 5, and this motor 8 drives speed reducer 7 motion, and then drives connecting rod 6 motion, and the other end of connecting rod 6 is connected on walking beam 2 and is close to the one end of self-adaptation counter weight structure 3 to drive walking beam 2 and move on support 4. The self-adaptive counterweight structure has the function of adjusting the size of the force arm by changing the position, so that the pumping unit can be helped to increase the tension force of the pumping unit, and the impact caused by descending is reduced.

As shown in fig. 2, the adaptive weight structure includes a box 301, a weight 303, a left spring 302, a right spring 304 and a rail 305, wherein the weight 303, the left spring 302, the right spring 304 and the rail 305 are arranged in the box 301, the weight 303 is movably disposed on the rail 305, and the rail 305 is laid at the bottom inside the box 301. One end of the left spring 302 and one end of the right spring 304 are respectively fixed on two sides of the counterweight block 303 relatively, the other end of the left spring 302 is fixed on the end surface of one side in the box body 301, and the other end of the right spring 304 is fixed on the end surface of the opposite side in the box body 301. When the counterweight 303 on the track 305 swings up and down on the walking beam 2, the moment arm is increased or decreased by moving left and right under the action of gravity, and the left spring 302 and the right spring 304 respectively realize buffering by stretching or compressing.

In the adaptive counterweight structure of the beam-pumping unit of this embodiment, the outer profile of the cross section of the counterweight 303 is the same as the inner profile of the cross section in the box 301, and the size is slightly smaller. As an implementation form, the box 301 is a rectangular shell-shaped structure, the cross section of the inside of the box 301 is rectangular, and the cross section of the counterweight 303 is rectangular. The bottom of the counterweight 303 is provided with a roller 306, and the roller 306 is matched with the track 305. In addition to designing one rail 305, as another scheme design, the bottom of the box 301 is provided with two rails 305 placed in parallel along the length direction, and a front roller 306 and a rear roller 306 are provided to cooperate with each rail 305.

When the counterweight 303 is located at the middle position of the box 301, the left spring 302 and the right spring 304 are in a natural tension state. The left spring 302 and the right spring 304 are oppositely arranged, and the two left springs or the two right springs are horizontally arranged.

The utility model discloses creatively designed self-adaptation counter weight structure, its work flow and position clearly express in figure 3 and figure 4.

As shown in fig. 3 and 4, in the initial stage of the up stroke of the pumping unit, the counterweight block moves to the left due to its own weight, and simultaneously compresses the left spring and stretches the right spring. At the moment, the force is reduced due to the reduction of the force arm of the balancing weight, so that the motor cannot be driven to perform backward power generation; the sucker rod load increases afterwards, and the balancing weight moves to the right under the effect of spring, and the arm of force increases, increases the power of counter weight, reduces the acting of motor, practices thrift the energy consumption.

The beam-pumping unit is at the initial stage of the lower stroke, and the balancing weight can move to the right because of the gravity of self, compresses right spring simultaneously, tensile left spring. At the moment, the force is increased due to the increase of the force arm of the balancing weight, and the sucker rod cannot drive the motor to perform 'backward power generation'; and then the load of the sucker rod is reduced, the balancing weight moves leftwards under the action of the spring, the force arm is reduced, and the output force of the balancing weight is reduced, so that the work of a motor is reduced, and the energy consumption is saved.

The utility model discloses an adaptive balance weight itself need not external power, only removes about under the effect of self gravity and spring, can adjust the circumstances of exerting oneself along with the motion of beam-pumping unit automatically simultaneously, has solved the beam-pumping unit at upper and lower stroke in-process "the electricity generation that falls" phenomenon completely, has practiced thrift the energy consumption, has reduced the impaired harm of electrical apparatus.

This embodiment has designed a box specially to self-adaptation counter weight structure, and the inside part of being convenient for to self-adaptation counter weight structure of design box is installed and is protected, the dismouting of being convenient for moreover. The prior patent designs a lead screw in a box body to drive a balancing weight to reciprocate, and the lead screw needs external force to drive, so that energy consumption can be caused, and meanwhile, the external force is adopted to drive the balancing weight to be controlled in real time, and the complexity of a control system is also caused. The self-adaptation of the utility model is that the counterweight does not need external force to drive completely, the angle change of the walking beam enables the counterweight to move back and forth automatically, and the automatic back and forth movement is completely synchronous with the load requirement, namely when the running state needs the counterweight to be a little larger, the counterweight is naturally on the right, and the force arm is long and has more output; when the counterweight needs to be a little smaller, the counterweight is naturally on the left, the moment arm is short, and the output force is less.

Example 2

This embodiment is also a self-adaptation counter weight structure of beam-pumping unit, and this self-adaptation counter weight structure locates the one end of keeping away from the horse head on the beam of pumping unit. As shown in fig. 5, the adaptive weight structure includes a box 301, a weight 303, a left spring 302, a right spring 304 and a rail 305, wherein the weight 303, the left spring 302, the right spring 304 and the rail 305 are disposed in the box 301, the weight 303 is movably disposed on the rail 305, the rail 305 is respectively laid on the top and the bottom of the box 301, one end of the left spring 302 and one end of the right spring 304 are respectively fixed on two sides of the weight 303, the other end of the left spring 302 is fixed on an end surface of one side of the box 301, and the other end of the right spring 304 is fixed on an end surface of the other side of the box 301. When the balancing weight 303 clamped by the rail 305 swings up and down on the walking beam, the force arm is increased or decreased by moving left and right under the action of gravity, and the left spring 302 and the right spring 304 respectively realize buffering by stretching or compressing.

In the self-adaptive counterweight structure of the beam-pumping unit, the outer contour of the cross section of the counterweight block is the same as the inner contour of the inner cross section of the box body, and the size of the counterweight block is slightly smaller. The box be the shell-shaped structure of cuboid, the inside cross section of this box is the rectangle, balancing weight cross section be the rectangle.

This embodiment is as another kind of implementation, bottom of the case and top be equipped with respectively along two tracks of length direction parallel placement, four tracks from top to bottom run through the balancing weight respectively, for orbital running through and centre gripping, be equipped with the through hole on the balancing weight respectively. The movement form of the balancing weight is designed from another angle, the balancing weight is ensured to move in a set mode and a track, and the stability and controllability are improved.

Example 3

This embodiment is also a self-adaptation counter weight structure of beam-pumping unit, and this self-adaptation counter weight structure locates the one end of keeping away from the horse head on the beam of pumping unit, and this self-adaptation counter weight structure is including box, balancing weight, left spring, right spring and track be equipped with balancing weight, left spring, right spring and track in the box, the balancing weight movably arrange in on the track, this track is laid in bottom in the box, the both sides at the balancing weight are fixed relatively respectively to the one end of left side spring and the one end of right spring, and the other end of left side spring is fixed on the terminal surface of one side in the box, and the other end of right side spring is fixed on the terminal surface of relative one side in the box. When the balancing weight arranged on the track swings up and down on the walking beam, the balancing weight moves left and right under the action of gravity to increase or decrease the force arm, and the left spring and the right spring respectively realize buffering by stretching or compressing.

The utility model discloses an among beam-pumping unit's self-adaptation counter weight structure, the outside profile of cross section of balancing weight is the same with the inside profile of cross section in the box, and the size is slightly littleer. The box be the shell-shaped structure of cuboid, the inside cross section of this box is the rectangle, balancing weight cross section be the rectangle. Besides the rectangular structure, other shapes and structures can be adopted. The bottom of the balancing weight is provided with a roller which is matched with the track. The bottom of the box body is provided with two rails which are arranged in parallel along the length direction, and the rails are provided with a front roller and a rear roller in a matching mode.

As shown in fig. 6, the utility model discloses a beam-pumping unit's self-adaptation counter weight structure in, the balancing weight when being located the intermediate position of box, left spring and right spring be in natural tension state. The left spring and the right spring which are arranged oppositely are respectively sleeved on a guide bar, the guide bar penetrates through the balancing weight, two ends of the guide bar are respectively fixed on two end faces of the inner side of the box body, and a through hole for the guide bar to penetrate through is formed in the balancing weight. In an implementation manner of the embodiment, two left springs and two right springs are respectively arranged oppositely, and the two left springs or the two right springs are vertically arranged up and down.

No doubt, above is only the limited a plurality of realization forms of the utility model discloses a in addition the utility model discloses a still include other the same or close structure composition form and structural design, can realize the same utility model purpose equally, the utility model discloses can not exhaust to enumerate in order to avoid. However, it is contemplated that modifications and substitutions that will be apparent to those skilled in the art are intended to be included within the scope of the claimed invention.

Claims (10)

1. A self-adaptive counterweight structure of a beam-pumping unit is arranged at one end, far away from a horse head, of a beam of the pumping unit and is characterized in that the self-adaptive counterweight structure comprises a box body, a counterweight block, a left spring, a right spring and a rail, wherein the counterweight block, the left spring, the right spring and the rail are arranged in the box body; when the balancing weight arranged on the track swings up and down on the walking beam, the balancing weight moves left and right under the action of gravity to increase or decrease the force arm, and the left spring and the right spring respectively realize buffering by stretching or compressing.

2. The adaptive counterweight structure of beam-pumping unit of claim 1, wherein the external profile of the cross section of said counterweight is the same as the internal profile of the internal cross section of the tank, and the size is slightly smaller.

3. The adaptive weight structure of a beam-pumping unit according to claim 1, characterized in that the bottom of the counterweight is provided with a roller wheel, and the roller wheel is matched with the rail.

4. The adaptive weight structure of a beam-pumping unit according to claim 3, characterized in that the bottom of the box body is provided with two rails which are arranged in parallel along the length direction, and a front roller and a rear roller are arranged to match each rail.

5. The adaptive counterweight structure of beam-pumping unit of claim 1, wherein said box is a rectangular shell-like structure, the cross section of the interior of the box is rectangular, and the cross section of said counterweight is rectangular.

6. The adaptive weight structure of a beam-pumping unit according to claim 1, characterized in that when the weight block is located at the middle position of the box body, the left spring and the right spring are in a natural tension state.

7. The adaptive weight balancing structure of a beam-pumping unit as claimed in claim 1, wherein the left and right springs are sleeved on a guide bar, the guide bar passes through the balancing weight, two ends of the guide bar are fixed on two end faces of the inner side of the box body, and the balancing weight is provided with a through hole for the guide bar to pass through.

8. The adaptive weight structure of a beam-pumping unit according to claim 1, characterized in that spring adjusters for adjusting the lengths of the springs are respectively arranged at the connecting positions of the left spring and the right spring with the inner end surface of the box body.

9. The adaptive weight structure of a beam-pumping unit according to claim 1, characterized in that the left spring and the right spring are respectively oppositely arranged in two numbers, and the two left springs or the right springs are horizontally arranged.

10. The adaptive weight structure of a beam-pumping unit according to claim 1, characterized in that the left spring and the right spring are respectively oppositely arranged in two numbers, and the two left springs or the right springs are vertically arranged.