CN201902729U

CN201902729U - Seal connecting pair with straight-pipe rolled external thread column

Info

Publication number: CN201902729U
Application number: CN201020600863XU
Authority: CN
Inventors: 周俊
Original assignee: SHANGHAI FANHUA FASTENING SYSTEM CO Ltd
Current assignee: SHANGHAI FANHUA FASTENING SYSTEM CO Ltd
Priority date: 2010-11-11
Filing date: 2010-11-11
Publication date: 2011-07-20
Anticipated expiration: 2020-11-11

Abstract

The utility model relates to a seal connecting pair with a straight-pipe rolled external thread column, which can solve the problem of length instability during field installation. The seal connecting pair is characterized in that the seal connecting pair comprises a pipe external thread column and one or two column thread adapters, wherein the pipe external thread column is a metal straight-pipe rolled full-external thread column or a straight-pipe rolled external thread column with a section of metal pipe body in the middle, and pipe external threads can be standard circular-pipe threads, or common threads, circular threads or trapezoidal threads; one ends of the column thread adapters are provided with column internal threads matched with the pipe external threads, the other ends of the column thread adapters are provided with standard rolled conical external pipe threads or standard conical internal pipe threads; and a cut-off column thread section of the pipe external thread column is respectively screwed and meshed with the column internal threads of one or two column thread adapters, a fluid pressure sealing surface is formed by an internal end surface sealing gasket, and then a seal pipe thread connecting pair with a length required for fields is formed.

Description

The pair that is tightly connected with straight tube roll extrusion outside thread post

Technical field

The utility model relates to a kind of rolled tube outside thread auxiliary connection.

Background technique

During pipe network is installed and is connected up to now, it still is Placement the simplest, most convenient that pipe thread connects, present this pipe thread Placement of employing more than 50%, other modes such as welding, flange, socket joint, clip etc. are used in the inefficient occasion of pipe thread Placement.On-the-spot installation situation often has a great difference with design drawing, generally cuts off by the scene that tubing overlaps the fiber tube outside thread then or the method that increases pipe collar or increase the leakproof auxiliary material change precession number of turns adapts to the variation of length.The on-the-spot die head threading machine machining screw of using, the outside thread quality is subjected to operator's subjective factor and factor affecting such as machine and cutter (screw die) wearing and tearing, and the outside thread quality is wayward; Increase pipe collar and promptly increased possible leak source, because the internal and external threads of screw cutting pipe joint auxiliary connection is to form through cutting technology, and screw cutting facing degree of finish is poor, and the facing applying degree of internal and external threads is reduced, and sealing is poor; Rely on outside thread to cooperate and leakproofing material fully, bear tube fluid pressure, the run, drip, leak phenomenon usually takes place after the assembling with precision between the internal thread.Tube wall thickness is by skiving in addition, and metal fibrous tissue is cut off by cutter, makes the tensile strength of auxiliary connection, and the mechanical property that resistance to flexure and fatigue resistance etc. is threaded descends greatly.

The patent No. has disclosed this single new product of roll extrusion male connector for the Chinese utility model patent of " ZL03235668.4 ", but also how to mate the problem that the pair that is threaded solves the pipeline random length of assembling in the unresolved pipe network erecting bed.

The model utility content

Technical problem to be solved in the utility model is the defective at existing turning processing or the existence of on-the-spot mantle fiber outside thread, and a kind of of proposition utilizes factory's specialization to produce, the pair but the pipe outside thread post of shearing length according to actual needs at the installation scene, the high strength sealing rolling pipe column jacket that assembles by male screw ABAP Adapter coupling are threaded.

The pair that is tightly connected with straight tube roll extrusion outside thread post of the present utility model, be characterized in, comprise a pipe outside thread post and one or two male screw ABAP Adapter, pipe outside thread post is full outside thread post of metal straight pipe roll extrusion or the middle straight tube roll extrusion outside thread post that one section metal body is arranged, one end of male screw ABAP Adapter is the post internal thread that is complementary with pipe outside thread post, and the other end is the roll extrusion awl external pipe thread of standard or the awl Internal Pipe Thread of standard; The cut-out male screw section of pipe outside thread post screws engagement and forms the hydrodynamic pressure sealing surface by the interior edge face seal washer with the post internal thread of one or two male screw ABAP Adapter respectively, cooperates the sealed pipe that the forms on-the-spot Len req pair that is threaded.

The utility model has the pair that is tightly connected of straight tube roll extrusion outside thread post on the other hand, be characterized in, comprise a pipe outside thread post and one or two male screw ABAP Adapter, at least one end of pipe outside thread post is that the roll extrusion awl external pipe thread of standard or the awl Internal Pipe Thread and the remaining part of standard are full outside thread post of metal straight pipe roll extrusion or the middle straight tube roll extrusion outside thread post that one section metal body is arranged, one end of male screw ABAP Adapter is the post internal thread that is complementary with pipe outside thread post, and the other end is the roll extrusion awl external pipe thread of standard or the awl Internal Pipe Thread of standard; The cut-out male screw section of pipe outside thread post screws engagement and forms the hydrodynamic pressure sealing surface by the interior edge face seal washer with the post internal thread of one or two male screw ABAP Adapter respectively, cooperates the sealed pipe that the forms on-the-spot Len req pair that is threaded.

The described pair that is tightly connected with straight tube roll extrusion outside thread post, its further characteristics are that the screw thread of pipe outside thread post is roll extrusion pipe screw thread, regular screw threads, round thread or the trapezoidal thread of standard.

The described pair that is tightly connected with straight tube roll extrusion outside thread post, its further characteristics are that the post internal thread of male screw ABAP Adapter is pipe screw thread, regular screw threads, round thread or the trapezoidal thread of standard.

The utlity model has such advantage:

Can be according to the actual demand of pipeline length, the outer male screw of producing by simple cutting factory normalization of pipe can solve pipeline random length problem with assembling male screw ABAP Adapter at the scene, and this falls behind technology to have stopped job site mantle fiber processing tube screw thread;

Can solve pipeline irregular problem by simple bent tube technique and assembling male screw ABAP Adapter according to the actual demand of on-the-spot pipeline;

Utilization exceeds the characteristics of pipe collar cutting internal thread more than 30% with the externally threaded surface hardness of a kind of metallic material roll extrusion post, when screwing cooperation, the ABAP Adapter internal thread is pushed the processing technology of (reparation) internal thread, interior threaded surface degree of finish is improved, formation is better than the facing applying degree of male screw in outer male screw of original cutting tube and the cutting tube, and sealability improves;

Interior threaded surface hardness appropriateness provides, outside thread is through extruding, tube wall is not by skiving, the body metal grain is not cut off, have the continuous steel fiber streamline of fluctuation in the outside thread top layer, thereby the internal and external threads that forms cooperates the mechanical connection performance that is better than male screw in outer male screw of original cutting tube and the cutting tube;

Screwing tight seal by the post Internal Pipe Thread in or two ABAP Adapter with post external pipe thread axial end cooperates, make the main sealing function that forms hydrodynamic pressure between this post post cooperation, add and state inside and outside male screw and cooperate and to form sealing fully, stopped the phenomenon of pipeline thread connection vice division chief run, drip, leak, connecting sealing reliability improves greatly, be better than traditional cutting internal and external threads and cooperate, can be under the pressure situation in low without the leakproof auxiliary material.

Description of drawings

Fig. 1 is the full outside thread columniation structure of a straight tube roll extrusion schematic representation.

Fig. 2 is the middle straight tube roll extrusion outside thread columniation structure schematic representation that one section metal body is arranged.

Fig. 3 is the full outside thread columniation structure of the straight tube roll extrusion schematic representation of the roll extrusion awl external pipe thread of an end band standard.

Fig. 4 is the straight tube roll extrusion outside thread columniation structure schematic representation of the awl Internal Pipe Thread of an end band standard.

Fig. 5 is the straight tube roll extrusion outside thread columniation structure schematic representation of typical 90 ° of curved metal bodys.

Fig. 6 is the awl Internal Pipe Thread adapter structure schematic representation of an end band standard.

Fig. 7 is the roll extrusion awl external pipe thread adapter structure schematic representation of an end band standard.

Fig. 8 is the awl Internal Pipe Thread ABAP Adapter linkage structure schematic representation of a straight tube roll extrusion outside thread post and an end band standard.

Fig. 9 is the roll extrusion awl external pipe thread ABAP Adapter linkage structure schematic representation of a straight tube roll extrusion outside thread post and an end band standard.

Embodiment

As shown in Figure 1, screw column 1 is the full outside thread post of straight tube roll extrusion.

As shown in Figure 2, screw column 2 is the middle straight tube roll extrusion outside thread post that one section metal body 20 is arranged.

As shown in Figure 3, screw column 3 is the full outside thread post of straight tube roll extrusion of band roll extrusion awl external pipe thread 30.

As shown in Figure 4, screw column 4 is the full outside thread post of straight tube roll extrusion of band awl Internal Pipe Thread 40.

As shown in Figure 5, screw column 5 is for having the straight tube roll extrusion outside thread post of 90 ° of curved metal bodys 50.

As shown in Figure 6, screw column 6 is the tubing string thread adapter of the awl Internal Pipe Thread 60 of an end band standard.

As shown in Figure 7, screw column 7 is the tubing string thread adapter of the roll extrusion awl external pipe thread 70 of an end band standard.

As Fig. 8, shown in Figure 9, the specialized tubing string thread adapter of producing 6,7 of factory respectively with the full outside thread post 1 of a straight tube that is cut to Len req through the scene or straight tube roll extrusion outside thread post 2 that one section metal body arranged by

seal washer

8,8 connect, tubing

string thread adapter

6,7 and

outside thread post

1,2 should adopt commaterial, so that the new pipe fitting auxiliary connection that is formed by connecting has and the original identical at least various mechanical propertys of pipe fitting; For demanding environment, the male screw ABAP Adapter can adopt the material of high strength grade.

By closely screwing after the cut-out of scene to cooperate two tubing

string thread adapters

6,7 and outside thread post 1, the 2 mutual axial end that forms under

seal washer

8,8 effects is sealed and matched,

end washer

8,8 produces certain deformation, make between first and second road screw thread at

substantial screw column

1,2 two ends outside of gasket materials, cause these two pipe fittings main sealing function of surface of contact self formation hydrodynamic pressure in opposite directions.

Mainly form screw thread machinery interconnect function and less important certain hydrodynamic pressure seal action by the post internal thread of tubing

string thread adapter

6,7 and the externally threaded cooperation of post of

outside thread post

1,2.

On-site cutting cooperates and does not need professional training with assembling, makes simple and efficiently, and efficiency of construction provides greatly.

Can be made into the rolled tube thread seal auxiliary connection of the required any length of on-the-spot installation by specialized male

screw ABAP Adapter

6,7 of producing of factory and pipe outside

thread post

1,2, be the necessary annex of the on-the-spot installation random length problem of solution.

Concrete application is as follows:

With straight tube roll extrusion outside

thread post

1,2,3,4 or 5 and screw thread cutting location obturator screw and be fixed on the stand and clamp;

2. the installation pipeline length required according to the scene is located straight tube roll extrusion outside

thread post

1,2,3,4 or 5 with screw thread cutting location obturator;

3. with common pipe cutting machine, the straight tube roll extrusion outside

thread post

1,2,3,4 or 5 that factory normalization is produced is cut to Len req;

4. the first road screw thread of the outside thread post that damages because of cutting with the obturator reparation of screw thread location;

The male screw ABAP Adapter 6 that factory normalization is produced or 7 and the on-site cutting reparation after outside thread post hand-screw tighten;

6. tighten to sealing with the male

screw ABAP Adapter

6 or 7 of instrument both sides;

7. the roll extrusion outside thread auxiliary connection after the assembling, its mechanical connection performance all surpasses existing screw cutting with sealability and is connected after tested, can be without the leakproof auxiliary material under the pressure situation in hanging down.

Claims

1. the pair that is tightly connected that has straight tube roll extrusion outside thread post, it is characterized in that, comprise a pipe outside thread post and one or two male screw ABAP Adapter, pipe outside thread post is full outside thread post of metal straight pipe roll extrusion or the middle straight tube roll extrusion outside thread post that one section metal body is arranged, one end of male screw ABAP Adapter is the post internal thread that is complementary with pipe outside thread post, and the other end is the roll extrusion awl external pipe thread of standard or the awl Internal Pipe Thread of standard; The cut-out male screw section of pipe outside thread post screws engagement and forms the hydrodynamic pressure sealing surface by the interior edge face seal washer with the post internal thread of one or two male screw ABAP Adapter respectively, cooperates the sealed pipe that the forms on-the-spot Len req pair that is threaded.

2. the pair that is tightly connected with straight tube roll extrusion outside thread post as claimed in claim 1 is characterized in that, the screw thread of pipe outside thread post is roll extrusion pipe screw thread, regular screw threads, round thread or the trapezoidal thread of standard.

3. the pair that is tightly connected with straight tube roll extrusion outside thread post as claimed in claim 1 is characterized in that, the post internal thread of male screw ABAP Adapter is pipe screw thread, regular screw threads, round thread or the trapezoidal thread of standard.

4. the pair that is tightly connected that has straight tube roll extrusion outside thread post, it is characterized in that, comprise a pipe outside thread post and one or two male screw ABAP Adapter, at least one end of pipe outside thread post is that the roll extrusion awl external pipe thread of standard or the awl Internal Pipe Thread and the remaining part of standard are full outside thread post of metal straight pipe roll extrusion or the middle straight tube roll extrusion outside thread post that one section metal body is arranged, one end of male screw ABAP Adapter is the post internal thread that is complementary with pipe outside thread post, and the other end is the roll extrusion awl external pipe thread of standard or the awl Internal Pipe Thread of standard; The cut-out male screw section of pipe outside thread post screws engagement and forms the hydrodynamic pressure sealing surface by the interior edge face seal washer with the post internal thread of one or two male screw ABAP Adapter respectively, cooperates the sealed pipe that the forms on-the-spot Len req pair that is threaded.

5. the pair that is tightly connected with straight tube roll extrusion outside thread post as claimed in claim 4 is characterized in that, the screw thread of pipe outside thread post is roll extrusion pipe screw thread, regular screw threads, round thread or the trapezoidal thread of standard.

6. the pair that is tightly connected with straight tube roll extrusion outside thread post as claimed in claim 5 is characterized in that, the post internal thread of male screw ABAP Adapter is pipe screw thread, regular screw threads, round thread or the trapezoidal thread of standard.