CN220016557U - Multistage seal structure of oil field operation - Google Patents

Abstract

The utility model relates to a multistage sealing structure for oilfield operation, which comprises an oil seal pipeline, wherein flanges are fixedly connected to the top and the bottom of the oil seal pipeline, two sliding plates are symmetrically and slidably connected to the inner wall of the oil seal pipeline, a liquid outlet groove is formed in the sliding plates, a piston head is fixedly connected to the outer wall of the sliding plates, an oil through groove is formed in the flange, a lantern ring is fixedly connected to the inner wall of the flange, and two first sealing rings are symmetrically and fixedly connected to the top of the sliding plates. The sealing device has the advantages that when the oil seal pipeline is sealed, the sliding plate is moved to enable the piston head to tightly prop against the oil through groove, the oil through groove can be more tightly blocked through the piston head with the conical structure, after the piston head props against the oil through groove, the rubber lantern ring is sleeved outside the piston head in a swinging way, the lantern ring is deformed after extrusion and is better attached to the piston head, meanwhile, the first sealing ring is inserted into the first sealing groove to perform further sealing, the oil through groove is tightly blocked through multistage sealing, oil cannot be discharged, and compared with a traditional device, the working quality and the service efficiency are greatly improved.

Description

Multistage seal structure of oil field operation

Technical Field

The utility model relates to the technical field of oilfield operation, in particular to a multistage sealing structure for oilfield operation.

Background

Through retrieving, chinese patent discloses hydraulic pressure oil pipe self-sealing device (grant bulletin number CN 207728337U), and this patent technique includes flange, lower flange, packing element, upper flange passes through interior screw thread and lower flange coupling, and open at lower flange lateral wall middle part has the taper pipe screw, and the packing element setting is in lower flange, and the packing element lower extreme sets up the gasket, and the packing element outer wall has a steel ring from top to bottom to overlap respectively, and the steel ring outer wall is opened flutedly, sets up the sealing member in the recess, and a sealing member surface contacts with lower flange. The utility model has the advantages of convenient installation, operation and rubber cylinder replacement, long service life, and can realize static sealing and dynamic sealing of the tripping pipe column by adjusting proper pressure on the rubber core, and is suitable for the construction operation of back flushing sand on the oilfield operation site and the operation of tripping the oil pipe column.

Disclosure of Invention

In view of the foregoing problems of the prior art, a primary object of the present utility model is to provide a multi-stage seal structure for oilfield operations.

The technical scheme of the utility model is as follows: the utility model provides a multistage seal structure of oil field operation, includes the oil blanket pipeline, the equal fixedly connected with flange in top and bottom of oil blanket pipeline, the inner wall symmetry sliding connection of oil blanket pipeline has two slides, the inside of slide is provided with out the cistern, the outer wall fixedly connected with piston head of slide, logical oil groove has been seted up to the inside of flange, the inner wall fixedly connected with lantern ring of flange, the first seal groove of two first seal rings of top symmetry fixedly connected with of slide, the first seal groove that two first seal rings of cooperation used has been seted up to the inside of flange, the second seal groove that two second seal rings of cooperation used has been seted up to the inside of slide.

As a preferred embodiment, a spring is arranged between the slide plate and the flange.

As a preferred embodiment, the outer side of the sliding plate is provided with a first annular corrugated pad, and the inner wall of the oil seal pipeline is provided with a second annular corrugated pad.

As a preferred embodiment, the piston head is of a conical structure, and the collar is of rubber material.

As a preferred implementation mode, a corrugated pipe is arranged between the two sliding plates, an inflator pump is arranged outside the oil seal pipeline, the output end of the inflator pump is connected with a pipeline, and one end of the pipeline extends to the inside of the corrugated pipe.

As a preferred embodiment, the flange is internally provided with positioning rivets.

Compared with the prior art, the utility model has the advantages and positive effects that:

according to the utility model, when the oil seal pipeline is sealed, the sliding plate is moved to enable the piston head to tightly prop against the oil through groove, the oil through groove can be more tightly blocked through the piston head with the conical structure, after the piston head props against the oil through groove, the rubber lantern ring is sleeved outside the piston head, the lantern ring is deformed after extrusion, the piston head is better attached, meanwhile, the first sealing ring is inserted into the first sealing groove to perform further sealing, the oil through groove is tightly blocked through multistage sealing, oil is not discharged, and the operation quality and the service efficiency are greatly improved compared with the traditional device.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of the utility model at A;

fig. 4 is an enlarged view of the utility model at B.

Legend description: 1. an oil seal pipe; 2. a flange; 3. oil through grooves; 4. a first seal ring; 5. a first seal groove; 6. a second seal groove; 7. a second seal ring; 8. a collar; 9. a piston head; 10. a slide plate; 11. a liquid outlet groove; 12. a first annular corrugated pad; 13. a second annular corrugated pad; 14. a spring; 15. a bellows; 16. a pipe; 17. an inflator pump; 18. and positioning the rivet.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model will be further described with reference to the drawings and the specific embodiments

Example 1

As shown in fig. 1 to 4, the present utility model provides a technical solution: the utility model provides a multistage seal structure of oil field operation, including oil blanket pipeline 1, the equal fixedly connected with flange 2 in top and the bottom of oil blanket pipeline 1, the inner wall symmetry sliding connection of oil blanket pipeline 1 has two slide 10, the inside of slide 10 is provided with out cistern 11, the outer wall fixedly connected with piston head 9 of slide 10, logical oil groove 3 has been seted up to the inside of flange 2, the inner wall fixedly connected with lantern ring 8 of flange 2, the top symmetry fixedly connected with of slide 10 two first sealing rings 4, the first seal groove 5 that two first sealing rings 4 of cooperation used has been seted up to the inside of flange 2, the inner wall symmetry fixedly connected with two second sealing rings 7 of flange 2, the second seal groove 6 that two second sealing rings 7 of cooperation used has been seted up to the inside of slide 10.

In this embodiment, when sealing the oil seal pipeline 1, the sliding plate 10 is moved to make the piston head 9 tightly prop against the oil through groove 3, and the oil through groove 3 can be tightly blocked by the piston head 9 with a conical structure, when the piston head 9 tightly prop against the oil through groove 3, the rubber collar 8 is sleeved outside the piston head 9, the collar 8 deforms after extrusion, and better fits with the piston head 9, meanwhile, the first sealing ring 4 is inserted into the first sealing groove 5 to perform another sealing, and the oil through groove 3 is tightly blocked by multistage sealing, so that oil can not be discharged.

Example 2

As shown in fig. 1-4, a spring 14 is arranged between the slide plate 10 and the flange 2; the outer side of the sliding plate 10 is provided with a first annular corrugated pad 12, and the inner wall of the oil seal pipeline 1 is provided with a second annular corrugated pad 13; the piston head 9 is of a conical structure, and the lantern ring 8 is made of rubber; a corrugated pipe 15 is arranged between the two sliding plates 10, an inflator 17 is arranged outside the oil seal pipeline 1, the output end of the inflator 17 is connected with a pipeline 16, and one end of the pipeline 16 extends to the inside of the corrugated pipe 15; the flange 2 is internally provided with a locating rivet 18.

In this embodiment, when the oil seal pipeline 1 is sealed, the inflator pump 17 is started, the volume of the bellows 15 is increased, the bellows 15 pushes the slide plate 10 to move, the spring 14 is compressed, the slide plate 10 moves to enable the piston head 9 to abut against the oil seal pipeline 1, the oil seal pipeline 3 can be more tightly blocked through the piston head 9 with a conical structure, when the piston head 9 abuts against the oil seal pipeline 3, the rubber collar 8 is sleeved outside the piston head 9 in a swinging manner, the collar 8 deforms after extrusion, the piston head 9 is better attached, meanwhile, the first sealing ring 4 is inserted into the first sealing groove 5, the second sealing ring 7 is inserted into the second sealing groove 6, multistage sealing is carried out on the oil seal pipeline 1, the slide plate 10 is attached to the oil seal pipeline 1 more tightly through the first annular corrugated pad 12 and the second annular corrugated pad 13, oil leakage is avoided, when the oil seal pipeline 3 is required to be discharged, the volume of the bellows 15 is reduced, the slide plate 10 is reset under the pushing of the spring 14, and oil can circulate through the oil outlet groove 11 and the oil seal pipeline 3.

Working principle:

as shown in fig. 1-4, when the oil seal pipeline 1 is sealed, the inflator pump 17 is started to increase the volume of the corrugated pipe 15, the corrugated pipe 15 pushes the sliding plate 10 to move, the spring 14 is pressed, the sliding plate 10 moves to enable the piston head 9 to abut against the oil seal pipeline 1, the oil seal pipeline 3 can be more tightly blocked through the piston head 9 with a conical structure, when the piston head 9 abuts against the oil seal pipeline 3, the rubber lantern ring 8 is sleeved outside the piston head 9 in a swinging way, the lantern ring 8 deforms after extrusion, and better abuts against the piston head 9, meanwhile, the first sealing ring 4 is inserted into the first sealing groove 5, the second sealing ring 7 is inserted into the second sealing groove 6, multistage sealing is carried out on the oil seal pipeline 1, the sliding plate 10 abuts against the oil seal pipeline 1 more tightly through the first annular corrugated pad 12 and the second annular corrugated pad 13, oil leakage is avoided, when the oil seal pipeline 3 is required to be discharged, the corrugated pipe 15 is enabled to be smaller in volume, the sliding plate 10 is reset under the pushing of the spring 14, and the oil can pass through the oil discharge tank 11 and the oil seal pipeline 3, and the circulation quality and the service efficiency are greatly improved compared with a traditional device.

Finally, it should be noted that: the embodiments described above are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (6)

1. The utility model provides a multistage seal structure of oil field operation, includes oil blanket pipeline (1), its characterized in that: the top and the equal fixedly connected with flange (2) of bottom of oil blanket pipeline (1), the inner wall symmetry sliding connection of oil blanket pipeline (1) has two slide (10), the inside of slide (10) is provided with out liquid groove (11), the outer wall fixedly connected with piston head (9) of slide (10), oil groove (3) have been seted up to the inside of flange (2), the inner wall fixedly connected with lantern ring (8) of flange (2), the top symmetry fixedly connected with two first sealing rings (4) of slide (10), the inside of flange (2) is seted up first seal groove (5) that two first sealing rings (4) of cooperation used, the inner wall symmetry fixedly connected with two second sealing rings (7) of flange (2), the second seal groove (6) that two second sealing rings (7) of cooperation used have been seted up to the inside of slide (10).

2. The multi-stage seal structure for oilfield operations of claim 1, wherein: a spring (14) is arranged between the sliding plate (10) and the flange (2).

3. The multi-stage seal structure for oilfield operations of claim 1, wherein: the outer side of the sliding plate (10) is provided with a first annular corrugated pad (12), and the inner wall of the oil seal pipeline (1) is provided with a second annular corrugated pad (13).

4. The multi-stage seal structure for oilfield operations of claim 1, wherein: the piston head (9) is of a conical structure, and the lantern ring (8) is made of rubber.

5. The multi-stage seal structure for oilfield operations of claim 1, wherein: a corrugated pipe (15) is arranged between the two sliding plates (10), an inflator pump (17) is arranged outside the oil seal pipeline (1), the output end of the inflator pump (17) is connected with a pipeline (16), and one end of the pipeline (16) extends to the inside of the corrugated pipe (15).

6. The multi-stage seal structure for oilfield operations of claim 1, wherein: positioning rivets (18) are arranged in the flange (2).