CN218780896U

CN218780896U - Sealing device for natural gas pipeline interface

Info

Publication number: CN218780896U
Application number: CN202222107601.5U
Authority: CN
Inventors: 马虎; 崔军平
Original assignee: Shaanxi Junping New Energy Co ltd
Current assignee: Shaanxi Junping New Energy Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-03-31
Anticipated expiration: 2032-08-11

Abstract

The utility model discloses a sealing device of natural gas line interface belongs to natural gas line technical field, and it is single to aim at solving among the prior art sealed mode, and the sealed effect of one deck is not good, the lower problem of security. Through the arrangement of the abutting part, the first sealing ring, the sealing piece, the external thread, the sealing strip and the thread sleeve, the sealing piece can completely abut against the first sealing ring through the connection of the thread sleeve and the external thread, so that the joint of the first pipeline and the second pipeline is sealed, the sealing strip seals between the thread sleeve and the external thread, and the sealing effect is improved through two sealing modes; through the setting of second sealing washer, third sealing washer and fixing bolt, the second sealing washer can be sealed between first pipeline and second pipeline and the thread bush, and fixing bolt can make the thread bush fully extrude the third sealing washer, and the third sealing washer seals between butt joint spare and the thread bush, has realized the multiple sealing to first pipeline and second pipeline kneck, and the security is higher.

Description

Sealing device for natural gas pipeline interface

Technical Field

The utility model relates to a natural gas line technical field specifically is a sealing device of natural gas line interface.

Background

Natural gas refers to all gases naturally occurring in nature, including gases formed by various natural processes in the air space, water space and rock space (including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like). Natural gas is one of the safer fuel gases, does not contain carbon monoxide, is lighter than air, immediately diffuses upwards once leaked, is not easy to accumulate to form explosive gas, and has higher safety than other fuel gases. When natural gas is exploited, natural gas pipelines are needed to convey natural gas, and sealing is needed between the natural gas pipelines.

Chinese patent CN207687523U discloses a natural gas pipeline interface sealing device, and this patent can form a plurality of gas barrier through arch and recess, can separate the natural gas to seal through the gasket, sealing method is comparatively single, only seals through the gasket in addition, and the sealed effect of one deck is not good, and the security is lower.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model discloses a sealing device for a natural gas pipeline interface, which adopts the technical scheme that the sealing device comprises a first pipeline and a second pipeline, wherein the second pipeline is arranged on one side of one end of the first pipeline, a butt part is arranged between the first pipeline and the second pipeline, the butt part can be arranged to abut against the interface between the first pipeline and the second pipeline, a first sealing ring is arranged on one side of the butt part, which is in contact with the first pipeline and the second pipeline, the sealing piece can be arranged to seal one side of the butt part, which is in contact with the first pipeline and the second pipeline, through the arrangement of the first sealing ring, the sealing piece is fixedly connected with one side of the first pipeline and the second pipeline, and the sealing piece can extrude the first sealing ring to improve the sealing effect of the first sealing ring, the outer surfaces of the first pipeline, the second pipeline and the abutting piece are provided with external threads, a sealing strip is wound on the outer surface of the external threads, the thread sleeves can be conveniently installed through the arrangement of the external threads and the sealing strip, meanwhile, the sealing sleeve can improve the sealing performance of connection between the thread sleeves and the external threads, the outer surface of the sealing strip is movably connected with the thread sleeves, the first pipeline and the second pipeline can be connected with the abutting piece through the arrangement of the thread sleeves, a second sealing ring is arranged between the outer surfaces of the first pipeline and the second pipeline and the thread sleeves, the outer surfaces of the first pipeline and the second pipeline and the thread sleeves can be sealed through the arrangement of the second sealing ring, a third sealing ring is arranged on one side of the abutting piece, which is in contact with the thread sleeves, and the abutting piece and the thread sleeves can be sealed through the arrangement of the third sealing ring, the threaded sleeve is connected with the abutting part through the fixing bolt, and the threaded sleeve and the abutting part can be fixedly connected through the fixing bolt, so that the threaded sleeve fully extrudes the third sealing ring.

As a preferred technical scheme of the utility model, the butt piece is including fixed cover, first adapter sleeve and second adapter sleeve, the first adapter sleeve of one side fixedly connected with that fixed cover is close to first pipeline, one side fixedly connected with second adapter sleeve that fixed cover is close to the second pipeline, through the setting of fixed cover, first adapter sleeve and second adapter sleeve, can support the kneck between first pipeline and the second pipeline.

As a preferred technical scheme of the utility model, the spacing groove has all been seted up to one side that one side, the second adapter sleeve that first adapter sleeve is close to first pipeline is close to one side of second pipeline, the both sides of fixed cover, the surface of first pipeline and the surface of second pipeline, through the setting of spacing groove, can prevent that first sealing washer, gasket, second sealing washer and third sealing washer from producing the removal.

As a preferred technical scheme of the utility model, first sealing washer, gasket, second sealing washer and third sealing washer all are located limiting groove inside.

As a preferred technical scheme of the utility model, the internal thread with external screw thread looks adaptation is seted up to the inside of thread bush, the surface of thread bush and fixed cover is provided with anti-skidding line, through the setting of internal thread and anti-skidding line, can dismantle the thread bush by easy to assemble.

As a preferred technical scheme of the utility model, first sealing washer, second sealing washer and third sealing washer are O type sealing washer, the sealing strip is polytetrafluoroethylene raw material area.

As a preferred technical scheme of the utility model, fixing bolt quantity is a plurality of, and is a plurality of fixing bolt encircles the thread bush equidistance and sets up, and a plurality of fixing bolt can improve the sealed effect between thread bush and the butt piece.

The utility model has the advantages that: the utility model discloses a butt piece, first sealing washer, gasket, external screw thread, sealing strip and thread bush's cooperation setting can utilize the butt piece to support the kneck between first pipeline and the second pipeline to utilize thread bush and external screw thread connection, make the gasket support first sealing washer completely, realized the sealed to first pipeline and second pipeline kneck, the thread bush passes through sealing strip and external screw thread zonulae occludens simultaneously, thereby improve the leakproofness of being connected between thread bush and the external screw thread, two kinds of sealing methods have improved sealed effect; through the cooperation setting of second sealing washer, third sealing washer and fixing bolt, the second sealing washer can seal between the surface and the thread bush of first pipeline and second pipeline, fixing bolt can carry out fixed connection with thread bush and butt piece, and then makes the thread bush fully extrude the third sealing washer, makes the third sealing washer can seal between butt piece and the thread bush, has realized the multiple sealing to first pipeline and second pipeline kneck, and the security is higher.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the present invention;

fig. 3 is a schematic diagram of the enlarged structure at a position of the present invention.

In the figure: 1. a first conduit; 2. a second conduit; 3. an abutting member; 301. fixing a sleeve; 302. a first connecting sleeve; 303. a second connecting sleeve; 4. a first seal ring; 5. sealing the sheet; 6. an external thread; 7. sealing tape; 8. a threaded sleeve; 9. a second seal ring; 10. a third seal ring; 11. fixing the bolt; 12. a limiting groove; 13. an internal thread; 14. and (4) anti-skid lines.

Detailed Description

Example 1

The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the utility model discloses a sealing device for natural gas pipeline interface, which adopts the technical scheme that the sealing device comprises a first pipeline 1 and a second pipeline 2, one side of one end of the first pipeline 1 is provided with the second pipeline 2, in order to perform primary sealing on the interface of the first pipeline 1 and the second pipeline 2, one side of the first pipeline 1 is abutted with a first connecting sleeve 302, one side of the second pipeline 2 is abutted with a second connecting sleeve 303, the first connecting sleeve 302 and the second connecting sleeve 303 are connected through a fixing sleeve 301, one side of the first connecting sleeve 302 contacted with the first pipeline 1 and one side of the second connecting sleeve 303 contacted with the second pipeline 2 are provided with a first sealing ring 4, the outer surfaces of the first pipeline 1, the second pipeline 2, the first connecting sleeve 302 and the second connecting sleeve 303 are provided with an external thread 6, in addition, the outer surface of the external thread 6 is wound with a sealing belt 7 made of polytetrafluoroethylene raw material belt, the sealing belt 7 on the outer surface of the external thread 6 is in threaded connection by using an internal thread 13 in the thread bush 8, at the moment, the first pipeline 1 is in complete contact with the first connecting bush 302, the second pipeline 2 is in complete contact with the second connecting bush 303, the first sealing ring 4 plays a role in sealing, the sealing belt 7 seals between the internal thread 13 and the external thread 6, in order to further improve the sealing effect, multiple sealing is carried out, and the safety is improved, a second sealing ring 9 is arranged between the outer surfaces of the first pipeline 1 and the second pipeline 2 and the thread bush 8, a third sealing ring 10 is arranged on one side of the abutting part 3 in contact with the thread bush 8, the thread bush 8 is fixedly connected with the fixed bush 301 by using a plurality of fixing bolts 11, and in order to prevent the O-shaped first sealing ring 4, the second sealing ring 9 and the third sealing ring 10 from moving, the first seal ring 4, the second seal ring 9 and the third seal ring 10 are arranged in the limiting groove 12.

The utility model discloses a theory of operation: when the sealing device is installed, firstly, one side of a first pipeline 1 is abutted with a first connecting sleeve 302, one side of a second pipeline 2 is abutted with a second connecting sleeve 303, then a sealing strip 7 of a polytetrafluoroethylene raw material strip is wound on the surfaces of external threads 6 of the outer surfaces of the first pipeline 1, the second pipeline 2, the first connecting sleeve 302 and the second connecting sleeve 303, then a thread sleeve 8 is in threaded connection with the external threads 6 through anti-skidding threads 14 and internal threads 13, at the moment, a sealing sheet 5 completely extrudes a first sealing ring 4, a second sealing ring 9 is also completely extruded, at the moment, the thread sleeve 8 is fixedly connected with a fixing sleeve 301 through a fixing bolt 11, at the moment, a third sealing ring 10 is completely extruded, and the O-shaped first sealing ring 4, the second sealing ring 9 and the third sealing ring 10 are positioned in a limiting groove 12; when natural gas is conveyed, the first sealing ring 4, the sealing sheet 5, the sealing belt 7, the second sealing ring 9 and the third sealing ring 10 have sealing effects; furthermore, a plurality of pipelines can be connected and sealed by the sealing device.

The mechanical connection according to the present invention is a conventional means used by those skilled in the art, and can be suggested by limited tests, which is common knowledge.

Components not described in detail herein are prior art.

Although the specific embodiments of the present invention have been described in detail, 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 range of those skilled in the art, and modifications or variations that do not have creative work are still within the scope of the present invention.

Claims

1. The utility model provides a sealing device of natural gas line interface, includes first pipeline (1) and second pipeline (2), one side of first pipeline (1) one end is provided with second pipeline (2), its characterized in that: be provided with between first pipeline (1) and second pipeline (2) butt piece (3), butt piece (3) are provided with first sealing washer (4) with one side of first pipeline (1) and second pipeline (2) contact, the equal fixedly connected with gasket (5) in one side of first pipeline (1) and second pipeline (2) and first sealing washer (4) contact, the surface of first pipeline (1), second pipeline (2) and butt piece (3) is provided with external screw thread (6), the surface winding of external screw thread (6) has sealing strip (7), the surface swing joint of sealing strip (7) has thread bush (8), be provided with second sealing washer (9) between the surface of first pipeline (1) and second pipeline (2) and thread bush (8), one side of butt piece (3) and thread bush (8) contact is provided with third sealing washer (10), thread bush (8) are connected with butt piece (3) through fixing bolt (11).

2. The seal device for a natural gas pipe joint according to claim 1, wherein: the butt piece (3) is including fixed cover (301), first adapter sleeve (302) and second adapter sleeve (303), fixed cover (301) are close to first adapter sleeve (302) of one side fixedly connected with of first pipeline (1), fixed cover (301) are close to one side fixedly connected with second adapter sleeve (303) of second pipeline (2).

3. The seal device for a natural gas pipe joint according to claim 2, wherein: limiting grooves (12) are formed in one side, close to the first pipeline (1), of the first connecting sleeve (302), one side, close to the second pipeline (2), of the second connecting sleeve (303), two sides of the fixing sleeve (301), the outer surface of the first pipeline (1) and the outer surface of the second pipeline (2).

4. The seal device for a natural gas pipe joint according to claim 3, wherein: the first sealing ring (4), the sealing sheet (5), the second sealing ring (9) and the third sealing ring (10) are all located inside the limiting groove (12).

5. The seal device for a natural gas pipe joint according to claim 1, wherein: the internal thread (13) matched with the external thread (6) is formed in the threaded sleeve (8), and anti-skid grains (14) are arranged on the outer surfaces of the threaded sleeve (8) and the fixed sleeve (301).

6. The seal device for a natural gas pipe joint according to claim 1, wherein: the first sealing ring (4), the second sealing ring (9) and the third sealing ring (10) are all O-shaped sealing rings, and the sealing strip (7) is a polytetrafluoroethylene raw material strip.

7. The seal device for a natural gas pipe joint according to claim 1, wherein: fixing bolt (11) quantity is a plurality of, and is a plurality of fixing bolt (11) encircle thread bush (8) equidistance setting.