CN201826793U - Integral double-layer polish rod sealer - Google Patents

Abstract

The utility model provides an integral double-layer polish rod sealer. A valve body is a complete forging cuboid, the inner of the forging cuboid is symmetrically processed to be six through holes in two horizontals and one vertical; an upper joint is welded at the upper part of an upper through hole and is provided with a nut with a handle, butt-joint gaskets, and butt-joint sealing rings; a small flange is welded at the lower part of the lower through hole and is provided with a big nut with a handle, a sealing ring, and a big flange; in the four though holes at the left and right, four piston rubber sealers adjusted by screws and pushed by springs are respectively installed and are divided into upper and lower two layers, forming circular sealing upon a sucker rod from left and right two sides. Additionally, novel structures such as an axially ''L''-shaped rubber sealing member, an ''H''-shaped well coupling a big flange, a greater adjusting gap kept between the outer circle of the small flange and the inner hole of the big nut with a handle, and between the inner hole of the big flange and the outer circle of the sucker rod, etc. are adopted, greatly improving whole strength and pressure resistance of product, and reducing binding force upon sucker rod of inclined shaft, thereby reducing energy consumption, and improving work efficiency of oil extraction.

Description

The double-deck polished rod sealer of a kind of monolithic

Affiliated technical field

The utility model relates to the improvement of petroleum machinery, pumpingh well well mouth sealing device.

Background technology

At present, widely used double-deck automatic compensation type polished rod sealer on the pumpingh well well head has compensation automatically behind the sealing part abrasion, and layering does not need advantages such as stopping production when changing seal.But adopt the plurality of sections of steel pipes welding or adopt this type of polished rod sealer of casting valve body, withstand voltage properties is poor, and under the high pressure hole condition, valve body is easy to generate leakage, and influence is produced.In addition, the special-shaped rubber seal that moulding complexity, clip place contact size are long can produce bigger lateral compression power to the deflecting well oil withdrawal bar, has increased the power consumption of oil pumper, influences tar productivity; The traditional tubing string screw thread and the connecting mode of well head can not adapt to the change and the demand of modern wellhead assembly connecting mode.

Summary of the invention

The purpose of this utility model is to improve product structure and processing technology with growing with each passing hour, solves the valve body withstand voltage properties difference of double-deck polished rod sealer and is difficult to adapt to problem such as deflecting well oil withdrawal operation.

Difference of the present utility model is: valve body is a complete forging cuboid, respectively is processed with a boss platform on the center of last plane and lower plane, and the right and left of boss platform respectively is drilled with a little pilot hole; The inside of valve body is processed into two horizontal one six perpendicular through holes symmetrically.Wherein: upward through hole welds with top connection mutually by the boss platform on last plane, is carrier with the top connection, and from top to down is equipped with band handle nut, butt joint packing ring and Butt sealing circle; Lower through-hole welds with the neck end of little flange mutually by the boss platform of lower plane, is carrier with little flange, and from top to down is equipped with band handle big nut, sealing ring and big flange; In four through holes of the right and left, the quadruplet sealer is housed respectively; Number of spare parts, the shape and size of quadruplet sealer are identical, with respect to the center line of valve body, form two-layer up and down, bilateral symmetry formula distribution.

Because valve body of the present utility model is a complete forging cuboid, the bottom adopts big flange externally to connect, and has improved the bulk strength and the withstand voltage properties of product significantly.Adopt flat De “ ∟ in the sealer " shape seal contact sucker rod, can alleviate restraint forces to the deflecting well oil withdrawal bar; Remove a Butt sealing circle in the endoporus of little flange, between the endoporus of the cylindrical of little flange and band handle big nut, exist bigger adjusting play between the endoporus of big flange and the sucker rod cylindrical, can carry out off-centre adjustment, for the deflecting well oil withdrawal bar provides more roomy activity space, thereby cut down the consumption of energy, improve the operating efficiency of oil recovery.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further.

Accompanying drawing is a full section structural representation of the present utility model.

Component title in the accompanying drawing shown in the label is as follows:

1, band handle nut, 2, the butt joint packing ring, 3, the Butt sealing circle, 4, top connection, 5, valve body, 6, little flange, 7, band handle big nut, 8, sealing ring, 9, big flange, 10, hold-down screw, 11, horizontal pressure foot, 12, arc pressuring plate, 13, seal, 14, piston, 15, spring, 16, spring housing, 17, regulating valve stem, 18, valve stem nut, 19, hard hat, 20, O type circle, 21, guide finger, A, sealer.

The specific embodiment

The utility model is made up of band handle nut (1), butt joint packing ring (2), Butt sealing circle (3), top connection (4), valve body (5), little flange (6), band handle big nut (7), sealing ring (8), big flange (9) and sealer (A).In order to improve the withstand voltage properties of polished rod sealer valve body, valve body of the present utility model (5) adopts a complete forging cuboid; Respectively be processed with a boss platform on the center of the last plane of valve body (5) and lower plane, the right and left of boss platform respectively is drilled with a little pilot hole; The inside of valve body (5) is processed into two horizontal one six perpendicular through holes symmetrically.Last through hole in the valve body (5), the boss platform by last plane welds mutually with the top connection (4) of hollow cylinder, and is carrier with top connection (4), and from top to down is equipped with to be with handle nut (1), to dock packing ring (2) and Butt sealing circle (3); Butt joint packing ring (2) and Butt sealing circle (3) after band handle nut (1) compresses, can play the safeguard protection effect that repeats to seal from the periphery engaging of sucker rod to sucker rod.Lower through-hole in the valve body (5), the boss platform by lower plane welds mutually with the neck end of little flange (6), be carrier with little flange (6) equally, and from top to down is equipped with is with handle big nut (7), sealing ring (8) and flange (9) greatly.In order to create comparatively loose activity space for the deflecting well oil withdrawal bar, the centre of little flange (6) is a clear opening, removes the Butt sealing circle that other products often has; Between the endoporus of the cylindrical of little flange (6) and band handle big nut (7), leave bigger adjusting play e between the endoporus of big flange (9) and the sucker rod cylindrical, the e value is usually between 5mm～20mm, so that take the circumstances into consideration to carry out the off-centre adjustment as required.In four through holes of the interior the right and left of valve body (5), quadruplet sealer (A) is housed respectively; Sealer (A) is made up of hold-down screw (10), horizontal pressure foot (11), arc pressuring plate (12), seal (13), piston (14), spring (15), spring housing (16), regulating valve stem (17), valve stem nut (18), hard hat (19), O type circle (20) and guide finger (21), number of spare parts, the shape and size of quadruplet sealer (A) are identical, with respect to the center line of valve body (5), form two-layer up and down, bilateral symmetry formula distribution.

For the contact size that reduces seal clip place with to the lateral compression power of inclination sucker rod, the seal of being looked in the utility model accompanying drawing (13) is to be processed into “ ∟ vertically " rubber parts of shape; At its right-angle bending place, use hold-down screw (10), horizontal pressure foot (11) and arc pressuring plate (12) and an end of piston (14) to link respectively.Zai “ ∟ " centre of shape rubber parts horizontal plane outer end edges, have a semi-circular hole with axis normal, use and sucker rod contact seal; Four seals (13) in the quadruplet sealer (A), divide two-layer up and down, left and right symmetrically to clamp sucker rod after, just can form bipassage ring around the closing seam circle.One end of piston (14) is processed with a Ge “ ∟ vertically " breach of shape, in the centre of breach horizontal plane outer end edges, be processed with a semi-circular hole with axis normal; At the right-angle bending place, be processed with several minor thread holes, be used for rigging screw (10), horizontal pressure foot (11), arc pressuring plate (12) and seal (13).The other end of piston (14) is processed with a big internal thread hole, is used for mounting spring (16) and spring housing (17).On the cylindrical of piston (14), be processed with four road annular seal grooves with the longitudinally guiding groove; Wherein in the annular seal groove that two roads do not intersect with the longitudinally guiding groove, two O type circles (15) are housed.Overall structure in view of valve body (5), four guide fingers (21) in the quadruplet sealer (A), being fixed on valve body (5) symmetrically goes up in the little pilot hole of boss platform the right and left on plane and the lower plane, be connected mutually with the longitudinally guiding groove on the piston (14), prevent that piston (14) and seal (13) from deflecting.Spring (16), spring housing (17), regulating valve stem (18) and valve stem nut (19) cooperatively interact, and by regulating, can produce relatively more balanced pressure, promote piston (14) and seal (13) moving linearly, from the right and left sealing sucker rod.The hard hat (21) that is positioned at sealer (A) outermost end is a hollow cone, valve stem nut (19) thread connection on big end and the sealer (A), and the centre of small end is processed with and is used for the interior polygonal groove of dismounting.Because the cone profile of hard hat (21) is unfavorable for the pipe wrench clip, the interior polygonal groove that small end is special is unfavorable for the general utility tool dismounting, so have certain antitheft key function.

In order to adapt to the change of modern wellhead assembly connecting mode, the utility model is made " worker " font structure with big flange (9), and the centre is the bigger endoporus of diameter, so that the sucker rod activity of the adjustment of little flange (6) and inclination; The cylindrical of upper flanges is processed with external screw thread, uses with being with handle big nut (7) to link; Be processed with the boss platform on the baseplane of following end flanges, be processed with the trapezoidal seal groove of ring-type in the boss platform, there are several uniform connection holes boss platform outside, so that adopt rigidity sealing ring and thread connector and wellhead assembly to link.

Claims (4)

1. the double-deck polished rod sealer of a monolithic, formed by band handle nut (1), butt joint packing ring (2), Butt sealing circle (3), top connection (4), valve body (5), little flange (6), band handle big nut (7), sealing ring (8), big flange (9) and sealer (A), it is characterized in that: valve body (5) is a complete forging cuboid, respectively be processed with a boss platform on the center of last plane and lower plane, the right and left of boss platform respectively is drilled with a little pilot hole, and the inside of valve body (5) is processed into two horizontal one six perpendicular through holes symmetrically; Wherein: upward through hole welds with top connection (4) mutually by the boss platform on last plane, is carrier with top connection (4), and from top to down is equipped with band handle nut (1), butt joint packing ring (2) and Butt sealing circle (3); Lower through-hole welds with the neck end of little flange (6) mutually by the boss platform of lower plane, is carrier with little flange (6), and from top to down is equipped with band handle big nut (7), sealing ring (8) and big flange (9); In four through holes of the right and left, quadruplet sealer (A) is housed respectively; Number of spare parts, the shape and size of quadruplet sealer (A) are identical, with respect to the center line of valve body (5), form two-layer up and down, bilateral symmetry formula distribution.

2. the double-deck polished rod sealer of the described monolithic of root a tree name claim 1, it is characterized in that: sealer (A) is made up of hold-down screw (10), horizontal pressure foot (11), arc pressuring plate (12), seal (13), piston (14), spring (15), spring housing (16), regulating valve stem (17), valve stem nut (18), hard hat (19), O type circle (20) and guide finger (21); Seal (13) is to be processed into “ ∟ vertically " rubber parts of shape, Zai “ ∟ " centre of horizontal plane outer end edges of shape, have a semi-circular hole with axis normal; Be processed with four road annular seal grooves on the cylindrical of piston (14) with the longitudinally guiding groove, in the annular seal groove that two roads do not intersect with the longitudinally guiding groove two O type circles (20) are housed, the guide finger (21) on one longitudinally guiding groove and last plane that is fixed on valve body (5) or the lower plane in the little pilot hole is connected mutually; Be positioned at the hard hat (19) of sealer (A) outermost end, be hollow cone, valve stem nut (18) thread connection on big end and the sealer (A), there is the inner polygon groove of the dismounting of being used for the centre of small end.

3. the double-deck polished rod sealer of the described monolithic of root a tree name claim 1, it is characterized in that: upright big flange (9) is " worker " font, the centre is a through hole, the cylindrical of upper flanges is processed with external screw thread, be processed with the boss platform on the baseplane of following end flanges, be processed with the trapezoidal seal groove of ring-type in the boss platform, boss platform periphery is processed with several uniform connection holes.

4. the double-deck polished rod sealer of the described monolithic of root a tree name claim 1, it is characterized in that: the centre of little flange (6) is a clear opening, between the endoporus of the cylindrical of little flange (6) and band handle big nut (7), exist adjusting play e between the endoporus of big flange (9) and the sucker rod cylindrical, the e value is between 5mm～20mm.

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