CN205877497U

CN205877497U - High strength tetrafluoro inside lining pipe joint

Info

Publication number: CN205877497U
Application number: CN201620730391.7U
Authority: CN
Inventors: 陈胜利
Original assignee: YONGJIA COUNTY TEFULONG ANTI-CORROSION EQUIPMENT Co Ltd
Current assignee: YONGJIA COUNTY TEFULONG ANTI-CORROSION EQUIPMENT Co Ltd
Priority date: 2016-06-27
Filing date: 2016-06-27
Publication date: 2017-01-11
Anticipated expiration: 2026-06-27

Abstract

The utility model provides a high strength tetrafluoro inside lining pipe joint, including outer lining and inside lining, the outer lining both ends are equipped with the ring flange, be equipped with the passageway of intercommunication both ends ring flange in the outer lining, the inside lining sets up in the passageway, the inside lining is located and is equipped with the sealing ring on the ring flange terminal surface, ring flange terminal surface department is equipped with the concave station that the diameter is greater than the passageway internal diameter, the sealing ring is located in the concave station, sealing ring thickness is greater than the concave station degree of depth, the sealing ring diameter is less than the concave station internal diameter, the concave station is equipped with positioning lip with continuous of passageway, positioning lip is outstanding to the ring flange terminal surface along the passageway axis, outstanding the half the of the concave station degree of depth that highly be of positioning lip, the sealing ring is equipped with and contacts the complex holding ring with positioning lip, the space that produces between concave station diameter and sealing ring diameter are poor is greater than sealing ring protrusion in the outside volume of concave station. The utility model discloses make polytetrafluoroethylene take place the creep when sealed, finally make the ring flange dock each other, realize the rigid connection of pipeline.

Description

A kind of high intensity tetrafluoro liner pipe joint

Technical field

This utility model relates to a kind of pipe joint, is specifically related to a kind of high intensity tetrafluoro liner pipe joint.

Background technology

Now along with social development, require day by day to strengthen to the corrosion resistance of pipeline in fields such as chemical industry, oil, pharmacy, Along with the discovery of politef, himself characteristic is applied to many occasions, wherein its corrosion resistance, sealing, high lubrication The plurality of advantages such as non-stick, electrical insulating property and good ageing resistance, heatproof excellence are used as inner-walls of duct antiseptical by people One of most important material, but its interface of pipeline of employing anticorrosive PTFE is all real by the way of bolt docking is pressed Existing forced seal, but politef moulding of having that " cold flow properties ", i.e. material product occur under long-time continuous load effect Property deformation " creep ", when pipeline connects, seal tight and the tightlyest stubborn for bolt during so that exceeding specific compression stress, Packing ring can be made to produce " creep " and be crushed, and the politef of conventional pipelines seam is often located immediately at the end of ring flange On face, when politef compression seal, pipeline flange dish can not contact with each other, and its contact surface is completely dependent on polytetrafluoroethyl-ne Alkene supports, and can make politef that creep occurs further when pipeline is produced bending or deformation by radial force, ultimately result in Sealing effectiveness weakens and even loses sealing property.

Utility model content

Based on the problems referred to above, this utility model purpose is to provide a kind of high intensity tetrafluoro liner pipe joint, at flange Dish end face arranges concave station, arranges the diameter teflon seal ring less than concave station, be positioned at concave station when pipeline joint in concave station Interior politef is pressed to make ring flange contact with each other while concave station space outerpace creep realizes sealing, and meets at pipeline Make ring flange realize being rigidly connected while sealing, improve the lateral rigidity of junction, it is to avoid because vibrations leak.

For problem above, it is provided that following technical scheme: a kind of high intensity tetrafluoro liner pipe joint, including outer lining and Liner, described outer lining two ends are provided with ring flange, and described outer lining center is communicated with the passage of two ends ring flange, and described liner is arranged In passage, described liner is positioned at ring flange end face and is provided with sealing ring, and described ring flange end is provided with diameter more than passage The concave station of internal diameter, described sealing ring is located in concave station, and described sealing ring thickness is more than the concave station degree of depth, and described sealing ring diameter is less than Concave station internal diameter；Described concave station and passage connecting place are provided with retention Hp, and described retention Hp is prominent to ring flange end face along passage axis, Described retention Hp projecting height is the half of the concave station degree of depth.

In said structure, sealing ring thickness is when pipeline docks more than the purpose of the concave station degree of depth, and sealing ring can preferentially connect Touching and seal, concave station diameter is to provide deformation space when sealing ring deformation for sealing ring more than the purpose of sealing ring.

This utility model is further arranged to, and described sealing ring is provided with and contacts the locating ring coordinated with retention Hp.

In said structure, it is compacted that locating ring makes the straight radially outer of sealing ring increase when sealing ring deformation by position constraint Become, it is to avoid seal the creep of hoop pipeline center and cause pipeline section to reduce.

This utility model is further arranged to, and the space produced between described concave station diameter and sealing ring diameter difference is more than close Seal ring protrudes from the volume outside concave station.

In said structure, the space produced between concave station diameter and sealing ring diameter difference protrudes from outside concave station more than sealing ring The volume in portion, makes sealing ring when pressurized in the energy remaining space that creep diffuses between concave station and sealing ring completely, finally makes Ring flange is mutually butted formation and is rigidly connected, thus meet this use novel final purpose.

Accompanying drawing explanation

Fig. 1 is overall subdivision structural representation of the present utility model；

Fig. 2 is detonation configuration schematic diagram of the present utility model；

Sealing ring creep pre-structure schematic diagram when Fig. 3 is this utility model docking；

Fig. 4 is this utility model docking increasing back sealing ring creep sealing and the structural representation of ring flange rigidity docking.

Label implication in figure: 10-outer lining；11-ring flange；12-passage；13-concave station；131-retention Hp；20-liner；21- Sealing ring；211-locating ring.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Below Embodiment is used for illustrating this utility model, but is not limited to scope of the present utility model.

Referring to figs. 1 to a kind of high intensity tetrafluoro liner pipe joint shown in Fig. 4, including outer lining 10 and liner 20, described Outer lining 10 two ends are provided with ring flange 11, and described outer lining 10 center is communicated with the passage 12 of two ends ring flange 11, described liner 20 Being arranged in passage 12, the end face that described liner 20 is positioned at ring flange 11 is provided with sealing ring 21, the end face of described ring flange 11 Place is provided with the diameter concave station 13 more than passage 12 internal diameter, and described concave station 13 communicates with passage 12, and described sealing ring 21 is located at concave station In 13, the thickness of described sealing ring 21 is more than the degree of depth of concave station 13, and the diameter of described sealing ring 21 is less than the internal diameter of concave station 13；Institute State concave station 13 and be provided with retention Hp 131 with passage 12 connecting place, described retention Hp 131 along the axis of passage 12 to the end of ring flange 11 Face highlights, the half that projecting height is concave station 13 degree of depth of described retention Hp 131.

In said structure, the thickness of sealing ring 21 is when pipeline docks more than the purpose of concave station 13 degree of depth, sealing ring 21 Can seal by preferential contact, concave station 13 diameter is to provide for sealing ring 21 when sealing ring 21 deforms to become more than the purpose of sealing ring 21 Shape space.

In the present embodiment, described sealing ring 21 is provided with and contacts the locating ring 211 coordinated with retention Hp 131.

In said structure, locating ring 211 makes the straight radially outer of sealing ring 21 when sealing ring 21 deforms by position constraint Increase creep, it is to avoid sealing ring 21 causes pipeline section to reduce to pipeline center's creep.

In the present embodiment, the space produced between described concave station 13 diameter and sealing ring 21 diameter difference is convex more than sealing ring 21 For the volume outside concave station 13.

In said structure, the space produced between concave station 13 diameter and sealing ring 21 diameter difference protrudes from more than sealing ring 21 Volume outside concave station 13, makes sealing ring 21 creep completely can diffuse to the residue between concave station 13 and sealing ring 21 when pressurized In space, finally make ring flange 11 be mutually butted formation and be rigidly connected, thus meet this use novel final purpose.

The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of without departing from this utility model know-why, it is also possible to make some improvement and modification, above-mentioned vacation If these improve and modification also should be regarded as protection domain of the present utility model.

Claims

1. a high intensity tetrafluoro liner pipe joint, including outer lining and liner, described outer lining two ends are provided with ring flange, described outside Lining center is communicated with the passage of two ends ring flange, and described liner is arranged in passage, and described liner is positioned on ring flange end face It is provided with sealing ring, it is characterised in that: described ring flange end is provided with the diameter concave station more than channel internal diameter, and described sealing ring sets In concave station, described sealing ring thickness is more than the concave station degree of depth, and described sealing ring diameter is less than concave station internal diameter；Described concave station and passage Connecting place is provided with retention Hp, and described retention Hp is prominent to ring flange end face along passage axis, and described retention Hp projecting height is recessed The half of the platform degree of depth.

A kind of high intensity tetrafluoro liner pipe joint the most according to claim 1, it is characterised in that: described sealing ring is provided with The locating ring coordinated is contacted with retention Hp.

A kind of high intensity tetrafluoro liner pipe joint the most according to claim 1, it is characterised in that: described concave station diameter with The space produced between sealing ring diameter difference protrudes from the volume outside concave station more than sealing ring.