CN202401999U - Multifunctional well mouth sealer - Google Patents

Abstract

The utility model relates to a multifunctional well mouth sealer, which composed of a lower ball seat, a ball upper gland, a ball body, a secondary nut, secondary packing, secondary seal box body, a main body lower part, a main body upper part, an annular seal body, a annular internal conical seal body, upper, middle and lower centralizing blocks, a lower conical lock closure, a duplex conical tower seal body, an irregularly-shaped conical tower seal body, an upper conical lock closure and an upper press cap, wherein the secondary packing is filled in the secondary seal box body; after sleeved and mounted on the ball upper gland, the ball body is connected with the lower end of the secondary seal box body through a thread at the upper end of the ball body and is then welded; the main body lower part is welded with the other end of the secondary seal box body in an aligned manner; the centralizing blocks and the seal packing are mounted in internal cavities of the main body upper part and the main body lower part respectively; the main body upper part and the main body lower part are connected through threads; and a seal ring is mounted between the main body upper part and the main body lower part. The well mouth sealer has a novel structure and is reliable in work, has a long service life, can keep the long-time sealing performance under the high temperature, and integrates multiple functions including angle aligning and centralizing.

Description

A kind of multifunctional well sealer for mouth

Technical field:

The utility model relates to a kind of particularly well mouth sealing device of steam injection heating power pumpingh well production of oil field rod-type pumpingh well that is used for.

Background technology:

The steam injection heating exploitation is the main mode of viscous crude field oil well production.At present; The routine of field by using is various with notes vapour rod-type pumpingh well well mouth sealing device structure; Characteristics are respectively arranged, but particularly still exist short, shortcoming and defect such as the maintain and replace workload is big in poorly sealed, obturator application life in process of production under the operating mode of HTHP to some extent.Simultaneously, the wellhead sealing device that adopts does not at present have angle aligning function concurrently, and it is big because of volume to carry out the wellhead sealing device of level, angle aligning individually simultaneously, and its manufacturing cost is increased.

The utility model content:

The purpose of the utility model be to provide a kind of good seal performance, high temperature resistant, wear-resisting, the sealing part replacement is convenient, have the angle aligning simultaneously concurrently and the multifunctional well sealer for mouth of multiple function such as set upright.

The above-mentioned purpose of the utility model be achieved in that this kind wellhead sealing device by lower ball base, sealing ring, spheroid upper press cover, spheroid, secondary nut, Push-pull bolt, positioning sleeve, positioning bolt, hexagon-headed bolt, plain washer, secondary packing, secondary seal box body, main body lower body, main body upper body, annular sealing member, ring inner conical seal, upper, middle and lower wiper block, down tapered locking closure, multiple conic tower type seal, abnormity awl tower seal, go up tapered locking closure, upper pressing cap oiling handle, upper pressing cap, upper pressing cap handle and form; Its structure, assembled relation are following: on the main body intracoelomic cavity pack into down tapered locking closure, multiple conic tower type seal, abnormity awl tower seal, go up tapered locking closure and go up wiper block; Upper pressing cap is threaded with the main body upper body; Compress internal part; Going up tapered locking closure compresses through inner conical surface and abnormity awl tower seal; Going up packs in the tapered locking closure goes up wiper block; The top is provided with upper pressing cap; Upper pressing cap both sides tapered segment is threaded with upper pressing cap handle, upper pressing cap oiling handle, and upper pressing cap is connected with upper end, main body upper body through screw thread; Main body upper body below and main body lower body are provided with sealing ring through being threaded in the junction; Packing into down in the main body lower body, wiper block, annular sealing member, ring inner conical seal reach middle wiper block; The main body lower body and the secondary seal box body other end align and are welded to connect; The secondary packing is housed in the secondary seal box body, and fixes with positioning bolt and positioning sleeve; The secondary nut is equipped with through screw thread respectively in secondary seal box body both sides; After the assembling of the big end of both sides Push-pull bolt and positioning sleeve, link to each other with the secondary nut centre bore of both sides respectively and stretch out beyond the nut through screw thread; Top, secondary seal box body both sides is respectively arranged with hexagon-headed bolt and plain washer, and hexagon-headed bolt screws in the secondary seal box body through screw and holds out against positioning sleeve; Behind the spheroid suit upper sphere upper press cover, be connected the back welding with secondary seal box body lower end through spheroid upper end screw thread; Spheroid upper press cover lower end internal thread is connected with the lower ball base upper end, between spheroid and the lower ball base sealing ring is housed.This kind wellhead sealing device top is oil pumper when work sealing position, owing to adopted multiple conic tower type seal and abnormity awl tower seal, and when improving sealing performance, also can long-term work under 180 ℃ high-temperature oil gas environment; In main body lower body and main body upper body, be equipped with 3 and have the wear-resistant wiper block of polished rod and seal being set upright function; The two spherical structures of the one that adopts spheroid and lower ball base to constitute in the ball upper press cover of bottom can guarantee the verticality of its well head and polished rod, and can adjust the angle of sealer and polished rod, help pumpingh well well head good seal.

The utility model novel structure, reliable operation, long service life can keep long sealing under worst hot case, have the angle aligning concurrently and multiple function such as set upright, and helps the pumpingh well ordinary production and increases economic efficiency, and is suitable for and applies.

Description of drawings: accompanying drawing is the general structure sketch map of the utility model.

The specific embodiment:

Below in conjunction with accompanying drawing the enforcement of the utility model is explained.

As shown in the figure, the utility model by lower ball base 1, sealing ring 2, spheroid upper press cover 3, spheroid 4, secondary nut 5, Push-pull bolt 6, positioning sleeve 7, positioning bolt 8, hexagon-headed bolt 9, plain washer 10, secondary packing 11, secondary seal box body 12, main body lower body 13, down wiper block 14, annular sealing member 15, ring inner conical seal 16, sealing ring 17, middle wiper block 18, main body upper body 19, down tapered locking closure 20, multiple conic tower type seal 21, upper pressing cap oiling handle 22, abnormity awl tower seal 23, go up tapered locking closure 24, go up wiper block 25, upper pressing cap 26, upper pressing cap handle 27 form.Wherein, lower ball base 1 upper end periphery has to be connected with spheroid upper press cover 3 uses screw thread, the sphere of inner headed face for matching with spheroid 4.Secondary seal box body 12 is horizontal type structure, and the lower end is provided with the screw thread that is connected with spheroid 4, and both sides are respectively equipped with connection secondary nut 5 and use screw thread.Main body lower body 13 inner-cavity structures are convenient to down wiper block location, and the outside is provided with to be connected with main body upper body 19 use screw thread, and the bottom is provided with step and secondary seal box body 12 is located, and is convenient to weld.Multiple conic tower type seal 21 and abnormity awl tower seal 23 conical surface seals.Go up tapered locking closure 24 lower ends and be provided with that the conical surface is close on the conical surface and the abnormity awl tower seal 23, be beneficial to sealing.Upper pressing cap 26 periphery both sides connect upper pressing cap handle 27 and upper pressing cap oiling handle 22, and the lower end is provided with to be connected with the main body upper body uses internal thread.

Claims (1)

1. multifunctional well sealer for mouth; By lower ball base (1), sealing ring (2), spheroid upper press cover (3), spheroid (4), secondary nut (5), Push-pull bolt (6), positioning sleeve (7), positioning bolt (8), hexagon-headed bolt (9), plain washer (10), secondary packing (11), secondary seal box body (12), main body lower body (13), down wiper block (14), annular sealing member (15), ring inner conical seal (16), sealing ring (17), middle wiper block (18), main body upper body (19), down tapered locking closure (20), multiple conic tower type seal (21), upper pressing cap oiling handle (22), abnormity awl tower seal (23), go up tapered locking closure (24), go up wiper block (25), upper pressing cap (26), upper pressing cap handle (27) form; It is characterized in that: main body upper body (19) inner chamber is packed into, and tapered locking closure (20), multiple conic tower type seal (21), abnormity are bored tower seal (23), go up tapered locking closure (24) and are gone up wiper block (25) down; Upper pressing cap (26) is threaded with main body upper body (19); Compress internal part; Going up tapered locking closure (24) compresses through inner conical surface and abnormity awl tower seal (23); Going up packs in the tapered locking closure (24) goes up wiper block (25); The top is provided with upper pressing cap (26); Upper pressing cap both sides tapered segment is threaded with upper pressing cap handle (27), upper pressing cap oiling handle (22), and upper pressing cap (26) is connected with main body upper body (19) upper end through screw thread; Main body upper body (19) below and main body lower body (13) are provided with sealing ring (17) through being threaded in the junction; Packing into down in the main body lower body (13), wiper block (14), annular sealing member (15), ring inner conical seal (16) reach middle wiper block (18); Main body lower body (13) aligns with secondary seal box body (12) other end and is welded to connect; Secondary packing (11) is housed in the secondary seal box body (12), and fixing with positioning bolt (8) and positioning sleeve (7); Secondary nut (5) is equipped with through screw thread respectively in secondary seal box body (12) both sides; After the big end of both sides Push-pull bolt (6) and positioning sleeve (7) assembling, link to each other with secondary nut (5) centre bore of both sides respectively and stretch out beyond the nut through screw thread; Top, secondary seal box body (12) both sides is respectively arranged with hexagon-headed bolt (9) and plain washer (10), and hexagon-headed bolt (9) screws in secondary seal box body (12) through screw and holds out against positioning sleeve (7); Behind spheroid (4) the suit spheroid upper press cover (3), be connected the back welding with secondary seal box body (12) lower end through spheroid (4) upper end screw thread; Spheroid upper press cover (3) lower end internal thread is connected with lower ball base (1) upper end, between spheroid (4) and the lower ball base (1) sealing ring (2) is housed.

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