CN213087948U

CN213087948U - Wear-proof device for packing box

Info

Publication number: CN213087948U
Application number: CN202021372789.0U
Authority: CN
Inventors: 闫民力; 段军涛; 乔峰; 饶天利; 闫子安; 陈灵霞; 路毅; 张君; 王小玲; 高彦军
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-04-30
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to an oil field oil recovery field, concretely relates to wear prevention device for packing box, include packing box and fix the ring flange on well head top, still include: the packing box is detachably connected to the upper surface of the flange, the packing box is concentric with the through hole, and the lower surface of the flange is detachably connected with the flange plate. The utility model discloses owing to adopted eccentric flange one, effectively solved the polished rod in the problem of reciprocating the serious wear packing box of skew time, and then realized reducing the wearing and tearing of packing box, increased its life.

Description

Wear-proof device for packing box

Technical Field

The utility model relates to an oil field oil recovery field, concretely relates to wear proof device for packing box.

Background

In the oil recovery process, need the polished rod to carry out up-and-down reciprocating motion and carry out the oil recovery operation, when the polished rod removed, because the polished rod bottom is connected with equipment, cause the polished rod can take place the skew when removing, can not make polished rod and well casing concentric to make packing box one side because the polished rod slope atress is serious, cause the rapid accelerated wear in packing box one side, cause the opening groove to appear in the packing box in the short time, make the well head the gas leakage phenomenon appear, can't maintain sealedly.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti-abrasion device for packing box has solved prior art, and the polished rod is to the serious problem of packing box wearing and tearing, through adjustment packing box position, adapts to polished rod inclined position, reduces the wearing and tearing of packing box.

The utility model provides a technical problem can adopt following technical scheme to realize:

the utility model provides a packing is wear prevention device for box, includes the packing box and fixes the ring flange on well head top, still includes:

the packing box is detachably connected to the upper surface of the flange, the packing box is concentric with the through hole, and the lower surface of the flange is detachably connected with the flange plate.

Further, still include connection pad, clamping ring, sealing ring one, sealing ring two, the connection pad upper surface is opened flutedly, it has through-hole two to open in the recess, can dismantle joint seal ring one in the recess, and the through-hole two is located sealing ring one, flange sliding connection is in the recess, and flange lower surface and sealing ring sliding connection, the clamping ring can be dismantled and connect at the connection pad upper surface, the clamping ring internal diameter is greater than the recess internal diameter, joint seal ring two can be dismantled to the clamping ring lower surface, sealing ring two and flange upper surface sliding connection, the connection pad can be dismantled with the ring flange and be connected.

Further, the equidistance is opened in the recess has three at least ball groove one, equal sliding connection has ball one in the ball groove one, a ball top and flange sliding connection.

Furthermore, an upper surface of the flange is equidistantly provided with at least three ball grooves II, the ball grooves II are connected with balls II in a sliding mode, and the top ends of the balls II are connected with the lower surface of the pressure ring in a sliding mode.

Furthermore, the outer circumferential surface of the first flange is provided with at least three ball grooves III at equal intervals, the ball grooves III are connected with balls III in a sliding mode, the inner circumferential surface of each groove is provided with a slideway, and the balls III are connected with the slideways in a sliding mode.

Furthermore, a third through hole is formed between the outer circumferential surface of the connecting disc and the inner circumferential surface of the groove, the third through hole is located in the slide way, and a bolt is connected with the third through hole through internal threads.

The utility model has the advantages that: due to the adoption of the eccentric flange I, the problem that the packing box is seriously worn when the polished rod moves up and down in a deviation manner is effectively solved, the abrasion of the packing box is reduced, and the service life of the packing box is prolonged.

The first ball is adopted, so that the problem that the first flange extrudes the first sealing ring when the polished rod moves downwards, and the first flange is difficult to rotate is effectively solved.

Due to the adoption of the second ball, the problem that the first flange extrudes the second sealing ring when the polished rod moves upwards, so that the first flange is difficult to rotate is effectively solved.

Due to the adoption of the third ball, the problem that the first flange extrudes the first sealing ring and the second sealing ring when the polish rod moves up and down, so that the first flange is difficult to rotate is effectively solved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the connection pad structure of the present invention.

Fig. 3 is a schematic view of the structure of the ball of the present invention.

Fig. 4 is a schematic structural view of the ball of the present invention.

Fig. 5 is a schematic view of the ball bearing structure of the present invention.

In the figure: 1-packing box; 2-a flange plate; 3-flange one; 4, a first through hole; 5-a connecting disc; 6-pressing a ring; 7-sealing ring I; 8-sealing ring II; 9-a second through hole; 10-rolling balls I; 11-ball II; 12-ball III; 13-a slide; 14-through hole three; 15-bolt.

Detailed Description

Example 1:

referring to fig. 1, it is the utility model discloses embodiment 1's structural schematic diagram, a wear prevention device for packing box, include packing box 1 and fix the ring flange 2 on well head top, still include:

the

flange

3, 2 axial divisions of this ring flange have a through-hole 4, 4 axle centers of through-hole do not coincide with 2 axle centers of ring flange, the connection can be dismantled at 3 upper surfaces of flange to packing box 1, packing box 1 is concentric with a through-hole 4, 3 lower surfaces of flange can be dismantled with ring flange 2 and be connected.

In actual use: firstly, according to the inclined direction of the polish rod, the position of a through hole I4 on a flange I3 is adjusted to enable the position of the through hole I4 to be the same as the inclined position of the polish rod, then the flange I3 and a flange plate 2 are connected through bolts, the packing box 1 is connected to the flange I3 through the bolts, connection is completed, the polish rod penetrates through the packing box 1 and the through hole I4, and the polish rod adapts to the offset position of the polish rod through the through hole I4 when reciprocating up and down, so that abrasion of the packing box 1 is reduced.

Example 2:

referring to fig. 2, the present embodiment is different from embodiment 1 in that: still include connection pad 5, clamping ring 6, sealing ring 7, two 8 of sealing ring, the upper surface of connection pad 5 is opened flutedly, it has two 9 of through-hole to open in the recess, can dismantle in the recess and connect sealing ring 7, and two 9 of through-hole are located sealing ring 7, flange 3 sliding connection is in the recess, and flange 3 lower surfaces and sealing ring 7 sliding connection, the connection can be dismantled at connection pad 5 upper surface to clamping ring 6, the 6 internal diameters of clamping ring are greater than the recess internal diameter, connecting seal ring two 8 can be dismantled to 6 lower surfaces of clamping ring, sealing ring two 8 and flange 3 upper surface sliding connection, connection pad 5 can be dismantled with ring flange 2 and be connected.

In actual use: connect connection pad 5 and ring flange 2, then place flange 3 in the recess, be connected with connection pad 5 top through clamping ring 6, limit flange 3 between connection pad 5 and clamping ring 6, when using, polished rod reciprocating motion, because polished rod and well interior connecting device reason, can still take place slight radial offset simultaneously to one side skew, when the polished rod removes, flange 3 can follow the polished rod skew and carry out passive rotation, thereby reduce the wearing and tearing of packing box 1, can prevent gas leakage through sealing ring 7 and two 8 of sealing rings, guarantee that the import is sealed.

Example 3:

referring to fig. 3, the present embodiment is different from embodiment 1 in that: the equidistance is opened in the recess has one of at least three ball groove, equal sliding connection has ball 10 in the ball groove, ball 10 top and flange 3 sliding connection.

In actual use: the polished rod moves down in packing box 1, make packing box 1 receive decurrent power, packing box 1 promotes flange one 3 downstream simultaneously, extrude sealing ring one 7, because sealing ring one 7 atress is great, make flange one 3 receive sealing ring one 7 influence, it is difficult to rotate, through ball one 10, can restrict the degree of flange one 3 extrusion sealing ring one 7, ball one 10 facilitates when flange one 3 rotates simultaneously, make things convenient for flange one 3 to rotate, can also guarantee the gas tightness of sealing ring one 7 simultaneously, can also reduce the degree of wear after the atress extrusion.

In this embodiment, the top end position of the ball-10 is lower than the top end position of the seal ring-7.

Example 4:

referring to fig. 4, the present embodiment is different from embodiment 1 in that: the equidistance of the upper surface of the first flange 3 is provided with two at least three ball grooves, two ball grooves are connected with two balls 11 in the two ball grooves in a sliding manner, and the top ends of the two balls 11 are connected with the lower surface of the pressure ring 6 in a sliding manner.

In actual use: the polished rod shifts up in packing box 1, make packing box 1 receive ascending power, packing box 1 drives flange one 3 and upwards removes simultaneously, extrude two 8 of sealing ring, because two 8 atress of sealing ring are great, make flange one 3 receive two 8 influences of sealing ring, it is difficult to rotate, through two 11 of the ball on the flange one 3, can restrict the degree of flange one 3 extrusion two 8 of sealing ring, two 11 of ball provide convenience when flange one 3 rotates simultaneously, make things convenient for flange one 3 to rotate, can also guarantee two 8's of sealing ring gas tightness simultaneously, can also reduce the degree of wear after the atress extrusion.

In this embodiment, the height of the second ball 11 on the upper surface of the first flange 3 is lower than the height of the second sealing ring 8 on the lower surface of the pressure ring 6.

Example 5:

referring to fig. 5, this embodiment is different from embodiment 1 in that: the outer circumferential surface of the flange I3 is provided with at least three ball grooves III at equal intervals, the ball grooves III are connected with balls III 12 in a sliding mode, the inner circumferential surface of each groove is provided with a slideway 13, and the balls III 12 are connected with the slideways 13 in a sliding mode. .

In actual use: when the polished rod reciprocates in packing box 1, can make packing box 1 drive flange one 3 and reciprocate in connection pad 5 and clamping ring 6, extrude two 8 and the first 7 sealing rings of sealing ring, when sealing ring one 7 and two 8 sealing rings receive the extrusion, flange one 3 moves up and moves down and increases with two 8 and one 7 one of them frictional force of sealing ring respectively, it is difficult to make flange one 3 rotate, through the restriction of three 12 cooperation slides 13 of ball, make flange one 3 keep being located the position placed in the middle in the recess, can not extrude sealing ring one 7 and two 8 sealing rings simultaneously when flange one 3 atress, simultaneously sealing ring one 7 and two 8 all keep the leakproofness with flange one 3, when flange one 3 atress rotates, can assist its rotation through three 12 balls, reduce frictional force.

Example 6:

referring to fig. 5, the present embodiment is different in that: and a third through hole 14 is formed between the outer circumferential surface of the connecting disc 5 and the inner circumferential surface of the groove, the third through hole 14 is positioned in the slideway 13, and a bolt 15 is connected in the third through hole 14 in a threaded manner.

In actual use: can make things convenient for ball three 12 to install in ball groove three and slide 13 through-hole three 14, during the installation, at first place flange one 3 in the recess, then fill in the ball through-hole three 14, rotate flange one 3 simultaneously, when ball groove three with the through-hole three to this, ball three 12 gets into ball groove three, continue to rotate flange one 3, make the ball get into slide 13 in, accomplish the installation of first ball three 12, then repeat this step and can finish all ball three 12 installations, then screw in bolt 15 through-hole three 14 and can accomplish the shutoff, prevent that ball three 12 from droing.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all such changes are within the scope of the present invention.

Claims

1. The utility model provides a packing is wear prevention device for box, includes packing box (1) and fixes ring flange (2) on well head top, its characterized in that still includes:

flange one (3), this ring flange (2) axial division have through-hole one (4), through-hole one (4) axle center is misaligned with ring flange (2) axle center, the connection can be dismantled in flange one (3) upper surface packing box (1), packing box (1) is concentric with through-hole one (4), flange one (3) lower surface can be dismantled with ring flange (2) and be connected.

2. The wear prevention device for the packing box according to claim 1, characterized by further comprising a connecting disc (5), a pressing ring (6), a first sealing ring (7) and a second sealing ring (8), the upper surface of the connecting disc (5) is provided with a groove, a through hole II (9) is arranged in the groove, a sealing ring I (7) is detachably connected in the groove, the through hole II (9) is positioned in the sealing ring I (7), the flange I (3) is connected in the groove in a sliding way, the lower surface of the flange I (3) is connected with the sealing ring I (7) in a sliding way, the press ring (6) is detachably connected with the upper surface of the connecting disc (5), the inner diameter of the compression ring (6) is larger than that of the groove, the lower surface of the compression ring (6) is detachably connected with a second sealing ring (8), and the second sealing ring (8) is in sliding connection with the upper surface of the first flange (3), and the connecting disc (5) is detachably connected with the flange plate (2).

3. The wear prevention device for the packing box according to claim 2, characterized in that at least three ball grooves I are equidistantly formed in the groove, a ball I (10) is slidably connected in each ball groove I, and the top ends of the ball I (10) are slidably connected with a flange I (3).

4. The wear prevention device for the packing box according to claim 2, wherein the upper surface of the first flange (3) is provided with at least three second ball grooves at equal intervals, the second ball grooves are internally and slidably connected with second balls (11), and the top ends of the second balls (11) are slidably connected with the lower surface of the compression ring (6).

5. The wear prevention device for the packing box according to claim 2, wherein the first flange (3) has at least three ball grooves three equidistantly formed in an outer circumferential surface thereof, the ball grooves three are slidably connected with balls three (12), the inner circumferential surface of the groove is provided with a slide way (13), and the balls three (12) are slidably connected with the slide way (13).

6. The wear prevention device for the packing box according to claim 5, characterized in that a third through hole (14) is formed between the outer circumferential surface of the connecting plate (5) and the inner circumferential surface of the groove, the third through hole (14) is located in the slideway (13), and the third through hole (14) is internally threaded with a bolt (15).