阅读说明：本技术 一种扭卡式抽油杆扶正器 (A kind of torsion cassette oil pumping rod centering device ) 是由 不公告发明人 于 2019-09-12 设计创作，主要内容包括：本发明涉及抽油杆扶正装置领域,且公开了一种扭卡式抽油杆扶正器,包括扶正外套、旋转连接组件、抽油杆、挡板套、定位环套、定位板,所述扶正外套的外径设与油管的内径相仿,扶正外套内腔的上下段通径相同,中部通径小于两端通径,其中,扶正外套内腔的上段通径至中部通径为陡变,扶正外套内腔的下段通径至中部通径为渐变；所述旋转连接组件设于扶正外套内腔的顶部和底部。该扭卡式抽油杆扶正器,通过扶正外套、旋转连接组件、挡板套以及定位环套的设计,通过油管内液体上流时,利用挡板套上下方液体压力差作用,使得挡板套上移作用于扶正外套旋转,实现刮蜡以及扶正套侧磨均匀的目的,从而提高扶正器的使用寿命。(The present invention relates to sucker rod stabilizer fields, and disclose a kind of torsion cassette oil pumping rod centering device, including righting housing, rotatable connection component, sucker rod, baffle-plate-sleeve, positioning ring set, positioning plate, the outer diameter of the righting housing sets similar with the internal diameter of oil pipe, the upper-lower section latus rectum of righting housing inner cavity is identical, and middle part latus rectum is less than both ends latus rectum, wherein, the upper section latus rectum of righting housing inner cavity to middle part latus rectum is abrupt change, and lower section latus rectum to the middle part latus rectum of righting housing inner cavity is gradual change；The rotatable connection component is set to the top and bottom of righting housing inner cavity.The torsion cassette oil pumping rod centering device, pass through righting housing, rotatable connection component, baffle-plate-sleeve and the design for positioning ring set, when by oily liquid in pipe upstream, it is acted on using baffle-plate-sleeve upper and lower hydraulic pressure, so that baffle-plate-sleeve, which moves up, acts on the rotation of righting housing, paraffin cutting and the uniform purpose of supporting positive cover side grinding are realized, to improve the service life of centralizer.)

1. a kind of torsion cassette oil pumping rod centering device, including righting housing (1), rotatable connection component (2), sucker rod (3), baffle-plate-sleeve (4), position ring set (5), positioning plate (6), it is characterised in that: the outer diameter of the righting housing (1) set it is similar with the internal diameter of oil pipe, The upper-lower section latus rectum of righting housing (1) inner cavity is identical, middle part latus rectum be less than both ends latus rectum, wherein righting housing (1) inner cavity it is upper Section latus rectum to middle part latus rectum is abrupt change, and lower section latus rectum to the middle part latus rectum of righting housing (1) inner cavity is gradual change；The rotation connection Component (2) is set to the top and bottom of righting housing (1) inner cavity, and rotatable connection component (2) horizontal with respect to righting housing (1) can revolve Turn, two rotatable connection components (2) have been respectively fixedly connected with sucker rod (3) far from the one end of righting housing (1)；The positioning plate (6) it is fixedly mounted on the lower section of righting housing (1) rotary-top connection component (2), the bottom of the positioning plate (6) is fixedly connected There is spring, the bottom end of the spring is fixedly connected with baffle-plate-sleeve (4), and the outer ring of the baffle-plate-sleeve (4) offers through-hole, and baffle It covers the outer at the top of (4) and is equipped with a circle latch；Righting housing (1) the upper section inner cavity, which is equipped with to be located above baffle-plate-sleeve (4), determines Position ring set (5), the outer of described positioning ring set (5) bottom are equipped with a circle latch；The rotatable connection component (2) includes being located to help Positioning sleeve (201) at positive housing (1) upper-lower section lumen centers, the side of the positioning sleeve (201) are fixedly connected with that there are four connect One end of spindle (202), four connecting shafts (202) all extends in the slideway of righting housing (1) inner cavity, the positioning sleeve (201) one end is fixedly connected with the connector sleeve (203) external positioned at righting housing (1), the connector sleeve (203) and sucker rod (3) screw thread is socketed, and is connected with fixing axle between two connecting shafts (202) in righting housing (1).

2. a kind of torsion cassette oil pumping rod centering device according to claim 1, it is characterised in that: baffle-plate-sleeve (4) outer The distance values of two side through hole are identical as latus rectum value in the middle part of righting housing (1) inner cavity, and baffle-plate-sleeve (4) is in righting housing (1) The middle part latus rectum of chamber.

3. a kind of torsion cassette oil pumping rod centering device according to claim 1, it is characterised in that: in the positioning ring set (5) The diameter of ring is greater than latus rectum in the middle part of righting housing (1) inner cavity, and above the latch of positioning ring set (5) bottom and baffle-plate-sleeve (4) Latch is close without contacting, and two latches not exclusively engage.

Technical field

The present invention relates to sucker rod stabilizer field, specially a kind of torsion cassette oil pumping rod centering device.

Background technique

Oil pumping rod centering device is the device for being used to prevent sucker rod Yu oil pipe eccentric wear in pumping operation, by centralizer to pumping Beam hanger is protected, and when sucker rod is up and down in oil pipe, sucker rod is easy to produce and is rubbed due to flexible deformation, bar and tubing wall Wipe, sucker rod is easy disconnected de-, has that flexibility is strong, it contacts with tube inner wall using oil pumping rod centering device, it is possible to reduce bar and The friction of pipe enhances the oil recovery service life of pumping unit

With continuing to optimize for oil pumping rod centering device, the standing supporting positive cover set outer diameter and be greater than sucker rod outer diameter, in sucker rod It when offset, is contacted by supporting positive cover with tube inner wall, to avoid sucker rod from contacting with tube inner wall, to guarantee that sucker rod is being taken out It is not damaged during oil, and in the internal or external design turbotype structure of supporting positive cover, using supporting positive cover with oily liquid in pipe It is upper and the problem of rotate, carries out the automatic paraffin cutting of inside pipe wall, prevent tube inner wall blocking and supporting positive cover side serious wear, lead Causing the service life of centralizer reduces.

However, oil passage as big as possible is reserved between existing supporting positive cover and tube inner wall, so that oily passes through, It not being blocked by impurity effect, it is much smaller that this compares the outer diameter of supporting positive cover with pipe aperture, when sucker rod being caused to deviate, Its portion is still likely to occur direct touching and eccentric wear with tube inner wall, so that the using effect of oil pumping rod centering device drops It is low, and existing supporting positive cover uses when pumping, liquid upstream effect turbine type rotates supporting positive cover, and the pre- oil pipe of supporting positive cover When inner wall contacts, there are larger frictional force, can not supporting positive cover be rotated just with the effect of liquid upstream, thus can not Realize paraffin cutting and the uniform purpose of supporting positive cover side grinding.

Summary of the invention

The present invention provides a kind of torsion cassette oil pumping rod centering device, have righting effect it is good, convenient for paraffin cutting and supporting positive cover The uniform advantage of side grinding, solves the technical issues of mentioning in background technique.

The invention provides the following technical scheme: a kind of torsion cassette oil pumping rod centering device, including righting housing, rotation connection group Part, sucker rod, baffle-plate-sleeve, positioning ring set, positioning plate, the outer diameter of the righting housing set it is similar with the internal diameter of oil pipe, outside righting The upper-lower section latus rectum for covering inner cavity is identical, and middle part latus rectum is less than both ends latus rectum, wherein the upper section latus rectum of righting housing inner cavity to middle part Latus rectum is abrupt change, and lower section latus rectum to the middle part latus rectum of righting housing inner cavity is gradual change；The rotatable connection component is set to outside righting The top and bottom of inner cavity are covered, rotatable connection component can be rotated horizontally with respect to righting housing, and two rotatable connection components are separate to be helped One end of positive housing has been respectively fixedly connected with sucker rod；The positioning plate is fixedly mounted on righting housing rotary-top connection component Lower section, the bottom of the positioning plate is fixedly connected with spring, and the bottom end of the spring is fixedly connected with baffle-plate-sleeve, the baffle The outer ring of set offers through-hole, and the outer at the top of baffle-plate-sleeve is equipped with a circle latch；The righting housing upper section inner cavity is equipped with position Positioning ring set above baffle-plate-sleeve, the outer of the positioning ring set bottom are equipped with rotatable connection component packet described in a circle latch The positioning sleeve being located at righting housing upper-lower section lumen centers is included, the side of the positioning sleeve is fixedly connected there are four connecting shaft, One end of four connecting shafts all extends in the slideway of righting housing inner cavity, and one end of the positioning sleeve is fixedly connected with position Connector sleeve outside righting housing, the connector sleeve and sucker rod screw thread are socketed, and are connected between two connecting shafts in righting housing It is connected to fixing axle.

Preferably, the distance values of two side through hole of baffle-plate-sleeve outer are identical as latus rectum value in the middle part of righting housing inner cavity, and Baffle-plate-sleeve abuts the middle part latus rectum of righting housing inner cavity.

Preferably, the diameter of the positioning ring set inner ring is greater than latus rectum in the middle part of righting housing inner cavity, and positions ring set bottom Latch with the latch above baffle-plate-sleeve close to without contacting, and two latches not exclusively engage.

The present invention have it is following the utility model has the advantages that

The torsion cassette oil pumping rod centering device passes through setting for righting housing, rotatable connection component, baffle-plate-sleeve and positioning ring set Meter when by oily liquid in pipe upstream, is acted on using baffle-plate-sleeve upper and lower hydraulic pressure, is helped so that baffle-plate-sleeve moves up to act on Positive housing rotation, realizes paraffin cutting and the uniform purpose of supporting positive cover side grinding, to improve the service life of centralizer, also, logical It is similar with tube inner wall diameter to cross righting housing outside, using manifold formula in liquid, while so that fluid channel space is enough, Ensure that centrally located sucker rod and tube inner wall spacing are sufficient, ensure that sucker rod will not with tube inner wall friction and be damaged.

Detailed description of the invention

Fig. 1 is schematic structural view of the invention；

Fig. 2 is structure of the invention righting housing top cut-away illustration；

Fig. 3 is structure of the invention righting housing top view.

In figure: 1, righting housing；2, rotatable connection component；201, positioning sleeve；202, connecting shaft；203, connector sleeve；3, it takes out Beam hanger；4, baffle-plate-sleeve；5, ring set is positioned；6, positioning plate.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Please refer to Fig. 1-3, a kind of torsion cassette oil pumping rod centering device, including righting housing 1, rotatable connection component 2, sucker rod 3, baffle-plate-sleeve 4, positioning ring set 5, positioning plate 6, the outer diameter of righting housing 1 set it is similar with the internal diameter of oil pipe, 1 inner cavity of righting housing Upper-lower section latus rectum is identical, and middle part latus rectum is less than both ends latus rectum, wherein the upper section latus rectum of 1 inner cavity of righting housing to middle part latus rectum is Lower section latus rectum to the middle part latus rectum of abrupt change, 1 inner cavity of righting housing is gradual change；Rotatable connection component 2 is set to 1 inner cavity of righting housing Top and bottom, rotatable connection component 2 can be rotated horizontally with respect to righting housing 1, and two rotatable connection components 2 are far from righting housing 1 one end has been respectively fixedly connected with sucker rod 3；Positioning plate 6 is fixedly mounted under 1 rotary-top connection component 2 of righting housing Side, the bottom of positioning plate 6 are fixedly connected with spring, and the bottom end of spring is fixedly connected with baffle-plate-sleeve 4, and the outer ring of baffle-plate-sleeve 4 opens up There is through-hole, and the outer at 4 top of baffle-plate-sleeve is equipped with a circle latch；1 upper section inner cavity of righting housing, which is equipped with, is located at 4 top of baffle-plate-sleeve Ring set 5 is positioned, the outer of positioning 5 bottom of ring set is equipped with a circle latch, and the diameter of positioning 5 inner ring of ring set is greater than in righting housing 1 Latus rectum in the middle part of chamber, and the latch of 4 top of the latch of positioning 5 bottom of ring set and baffle-plate-sleeve is close without contacting, and two latches are endless Full engagement, in pumping operation, moves in righting housing 1 on oily liquid in pipe, because the lower section latus rectum of 1 inner cavity of righting housing is into Portion's latus rectum becomes smaller, the increase so that upstream liquid being located at 1 bottom of righting housing upwards pressure, so that on baffle-plate-sleeve 4 It moves, the latch on baffle-plate-sleeve 4 acts on the latch of 5 lower section of positioning ring set, so that 4 rotation of positioning 5 opposing flaps of ring set set, that is, help Positive housing 1 is rotated relative to sucker rod 3, paraffin cutting and the uniform purpose of supporting positive cover side grinding is realized, to improve the use of centralizer Service life.

Wherein, rotatable connection component 2 includes the positioning sleeve 201 being located at 1 upper-lower section lumen centers of righting housing, positioning sleeve 201 side is fixedly connected there are four connecting shaft 202, and one end of four connecting shafts 202 all extends to the cunning of 1 inner cavity of righting housing In road, one end of positioning sleeve 201 is fixedly connected with the connector sleeve 203 outside righting housing 1, connector sleeve 203 and sucker rod 3 Screw thread is socketed, and is connected with fixing axle between two connecting shafts 202 in righting housing 1, baffle-plate-sleeve 4 only can be moved longitudinally in fixing axle It is dynamic, it is rotated in the slideway of 1 inner cavity of righting housing by four connecting shafts 202 of 201 side of positioning sleeve, realizes righting housing 1 It can be rotated relative to sucker rod 3, thus it is similar with tube inner wall diameter by 1 outside of righting housing, using manifold formula in liquid, make Fluid channel space it is enough while, it is ensured that centrally located sucker rod and tube inner wall spacing are sufficient, ensure that sucker rod It will not be damaged with tube inner wall friction, so that righting effect is good.

Wherein, the distance values of 4 outer of baffle-plate-sleeve, two side through hole are identical as latus rectum value in the middle part of 1 inner cavity of righting housing, and baffle Set 4 abuts the middle part latus rectum of 1 inner cavity of righting housing, and the fluid of 4 lower section of baffle-plate-sleeve is upper by two side through hole, due to liquid upstream Space reduces, so that the pressure difference that 4 lower section pressure difference of baffle-plate-sleeve is greater than top is provided enough so that baffle-plate-sleeve 4 be driven to move up with this Driving force rotates so that righting housing 1 overcomes with the frictional force in relation to inner wall.

In use, by righting housing 1 close to fitting tube inner wall, it is ensured that the sucker rod on center line will not be with oil Inside pipe wall contact, during sucker rod pumping operation, the liquid of oil pipe bottom is upper and passes through the inside of righting housing 1, liquid Body flows through space reduction in righting housing 1, and fluid increases the upper pressure of baffle-plate-sleeve 4, so that baffle-plate-sleeve 4 moves up, baffle-plate-sleeve 4 On latch act on the latch of positioning ring set 5 lower section so that positioning ring set 5 generates the torsional forces rotated horizontally, to drive Righting housing 1 rotates, and carries out paraffin cutting and ensures 1 excess oil inside pipe wall even wearing of righting housing, and fluid is through logical on baffle-plate-sleeve 4 Hole is upper.