CN202273628U

CN202273628U - Double-layer anti-leakage split sealing ring sealer

Info

Publication number: CN202273628U
Application number: CN2011203516555U
Authority: CN
Inventors: 张显海
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-19
Filing date: 2011-09-19
Publication date: 2012-06-13
Anticipated expiration: 2021-09-19

Abstract

The utility model relates to a well mouth sealer of a pumping well, in particular to a double-layer anti-leakage split sealing ring sealer. A lower split sealing ring is arranged at the position of a step on an inner wall of a cross secondary sealing body of the sealer, a lower sealing body is fastened on the cross secondary sealing body, the lower sealing body presses the lower split sealing ring, a first layer of packing is arranged on the lower split sealing ring, a middle split sealing ring I and a middle split sealing ring II are arranged on the first layer of packing, and the middle split sealing ring II and the upper end of the lower sealing body are connected with an upper sealing body. A second layer of packing is arranged in the upper sealing body, an upper split sealing ring is arranged on the second layer of packing, and a pressing cover is pressed at the upper end of the upper split sealing ring. The double-layer anti-leakage split sealing ring sealer is small in sealing gaps, good in anti-leakage effect and long in service life and overcomes the defects that the existing sealing device pressing cover is big in sealing gaps and short in service life and can cause a phenomenon of oil leakage.

Description

A kind of double-deck antiseep separating-closing type seal ring seal device

Technical field:

The utility model relates to a kind of pumpingh well wellhead sealing device, particularly a kind of double-deck antiseep separating-closing type seal ring seal device.

Background technology:

At present, the sealing of oil field pumping well well head is normally installed a kind of packing box in the well head upper end, and the annular packing of in packing box, packing into, is used as the sealing to wellhead polish rod, prevents to take place when well head from moving up and down because of polished rod oil leakage phenomenon.But because the gland and the seal clearance between the polished rod of pressure-conducting disk root are big up and down, packing and polished rod friction generates pulling force up and down causes packing to damage easily, thereby is prone to from sealer, take packing out of; Will cause oil leakage phenomenon; Fuel injection event occurs if find untimely meeting, cause the pollution of surrounding environment, so the sealing effectiveness of this sealing device is unsatisfactory; And application life is short, and the workman changes wastes time and energy.

The utility model content:

The technical problem that the utility model will solve provides a kind of double-deck antiseep separating-closing type seal ring seal device, and the sealing device has realized that seal clearance is little, antiseep good sealing effect and long service life.Overcome seal clearance between existing sealer gland and the polished rod big, be prone to cause oil leakage phenomenon and application life short deficiency.

The technical scheme that the utility model is taked is: a kind of double-deck antiseep separating-closing type seal ring seal device; Comprise that gland, last seal, lower seal body, universal joint, connection gland, well head connect and cross secondary seal body; Wherein cross secondary seal body comprises leading screw gland, leading screw, second-level sealing ring, screw, gathering sill and fixed screw; Cross secondary seal body lower end connects universal joint, universal joint be connected through the connection gland between well head is connected; Cross secondary seal body inwall step place is equipped with down the separating-closing type joint ring; Fastening lower seal body on the cross secondary seal body; The lower seal body compresses down the separating-closing type joint ring, is equipped with one deck packing on the following separating-closing type joint ring, is equipped with middle part separating-closing type joint ring I and middle part separating-closing type joint ring II on one deck packing; Middle part separating-closing type joint ring II is connected seal with lower seal body upper end; Last seal is built-in with two layers of packing, is equipped with the separating-closing type joint ring on two layers of packing, and last separating-closing type joint ring upper end is pressed with gland; Wherein descend separating-closing type joint ring, middle part separating-closing type joint ring I, middle part separating-closing type joint ring II all identical with last separating-closing type seal ring structure; All form by pin thread joint ring and box joint ring two parts; The pin thread joint ring can be threaded on the box joint ring inwall, and the pin thread joint ring is through line cutting separated into two parts.

The beneficial effect of the utility model is: the utility model has been owing to adopted up and down the separating-closing type seal ring seal to live the packing in the annular seal space, thereby it is little to have a friction, and the gap is little, and long service life hugs polished rod and play the not effect of easy to leak that seals; Owing to adopted the Double layer packing sealing, thereby had the effective function of antiseep.In addition, the utlity model has advantage simple in structure, highly versatile.

Description of drawings:

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation of pin thread joint ring.

Fig. 3 is the structural representation of box joint ring.

Fig. 4 is the vertical view of Fig. 2.

The specific embodiment:

Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4; A kind of double-deck antiseep separating-closing type seal ring seal device; Comprise gland 1, last seal 4, lower seal body 6, universal joint 10, connect gland 11, well head connection 12 and cross secondary seal body; Wherein cross secondary seal body comprises leading screw gland 7, leading screw 8, second-level sealing ring 9, screw 16, gathering sill 17 and fixed screw 18, and cross secondary seal body lower end connects universal joint 10, universal joint 10 be connected through connection gland 11 between well head is connected 12; Cross secondary seal body inwall step place is equipped with down separating-closing type joint ring 15; Fastening lower seal body 6 on the cross secondary seal body; Lower seal body 6 compresses down separating-closing type joint ring 15, is equipped with one deck packing 14 on the following separating-closing type joint ring 15, is equipped with middle part separating-closing type joint ring I 13 and middle part separating-closing type joint ring II5 on one deck packing 14; Middle part separating-closing type joint ring II5 is connected seal 4 with lower seal body 6 upper ends; Last seal 4 is built-in with on 3, two layers of packing 3 of two layers of packing and is equipped with separating-closing type joint ring 2, and last separating-closing type joint ring 2 upper ends are pressed with gland 1; Wherein descend separating-closing type joint ring 15, middle part separating-closing type joint ring I 13, middle part separating-closing type joint ring II5 all identical with last separating-closing type joint ring 2 structures; All form by pin thread joint ring 19 and box joint ring 20 two parts; Pin thread joint ring 19 can be threaded on box joint ring 20 inwalls, and pin thread joint ring 19 is through line cutting separated into two parts.

When following separating-closing type joint ring 15, middle part separating-closing type joint ring I 13, middle part separating-closing type joint ring II5 and last separating-closing type joint ring 2 are installed, pack into polished rod to box joint ring 20 after, be connected pin thread joint ring 19 on box joint ring 20 inwalls again.In polished rod moves up and down repeatedly; Because in the sealer time separating-closing type joint ring 15 has been installed, following separating-closing type joint ring 15 is fastening by lower seal body 6, and is small with the polished rod gap; Cause down separating-closing type joint ring 15 to be easier to scrape off the oil on the polished rod, and can scraped finish not arrive polished rod.When polished rod rubbed with one deck packing 14 mutually, one deck packing 14 can scrape off the oil on the polished rod once more, so that the little oil on the polished rod reduces again.If wearing and tearing appear when rub with polished rod in the long-term back one deck packing 14 that uses, can be fastening and make one deck packing 14 generation compressive deformations with going up seal 4 rotations, one deck packing 14 will be held tightly with polished rod, can reach the effect of antiseep once more.When one deck packing 14 may wear to can not re-use the time; Launch two layers of packing 3, rotate the fastening seal 4 of going up and make middle part separating-closing type joint ring I 13 and polished rod friction, rotate fastening gland 1 and make separating-closing type joint ring 2 push down two layers of packing 3; Two layers of packing 3 are held tightly with polished rod, produce sealing effectiveness.

It is understandable that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.

Claims

1. double-deck antiseep separating-closing type seal ring seal device; Comprise that gland (1), last seal (4), lower seal body (6), universal joint (10), connection gland (11), well head connect (12) and cross secondary seal body; Wherein cross secondary seal body comprises leading screw gland (7), leading screw (8), second-level sealing ring (9), screw (16), gathering sill (17) and fixed screw (18); Cross secondary seal body lower end connects universal joint (10), and universal joint (10) is connected with well head between (12) and is connected through connecting gland (11); It is characterized in that: cross secondary seal body inwall step place is equipped with down separating-closing type joint ring (15); Fastening lower seal body (6) on the cross secondary seal body; Lower seal body (6) compresses down separating-closing type joint ring (15), is equipped with one deck packing (14) on the following separating-closing type joint ring (15), is equipped with middle part separating-closing type joint ring I (13) and middle part separating-closing type joint ring II (5) on one deck packing (14); Middle part separating-closing type joint ring II (5) is connected seal (4) with lower seal body (6) upper end; Last seal (4) is built-in with two layers of packing (3), is equipped with separating-closing type joint ring (2) on two layers of packing (3), and last separating-closing type joint ring (2) upper end is pressed with gland (1); Wherein descend separating-closing type joint ring (15), middle part separating-closing type joint ring I (13), middle part separating-closing type joint ring II (5) all identical with last separating-closing type joint ring (2) structure; All form by pin thread joint ring (19) and box joint ring (20) two parts; Pin thread joint ring (19) is threaded on box joint ring (20) inwall, and pin thread joint ring (19) is through line cutting separated into two parts.