CN202176845U

CN202176845U - Steel-plastic composite pipe connection structure with conical sleeve

Info

Publication number: CN202176845U
Application number: CN2011203084119U
Authority: CN
Inventors: 张望东; 付志敏; 李贤梅
Original assignee: GOODY TECHNOLOGY Co Ltd; GUDI PLASTIC ELECTRIC APPLIANCE CO Ltd CHONGQING
Current assignee: GOODY TECHNOLOGY Co Ltd; GUDI PLASTIC ELECTRIC APPLIANCE CO Ltd CHONGQING
Priority date: 2011-08-23
Filing date: 2011-08-23
Publication date: 2012-03-28
Anticipated expiration: 2021-08-23

Abstract

The utility model discloses a steel-plastic composite pipe connection structure with a conical sleeve, including a press ring I and a press ring II respectively sleeved on two pipes to be connected and a sleeve with two ends respectively inserted into the pipe mouths of the two pipes to be connected. The pipe mouths are conical; two ends of the sleeve are conical to be coupled with the inner walls of the pipe mouths; the press ring I and the press ring II are respectively provided with an inner core coupling to the external wall of the pipe mouth; an adjusting device is provided between the press ring I and the press ring II for adjusting the distance between the two; and when the two pipes are connected, the press ring I and the press ring II respectively tightly press the pipe walls of the pipe mouths at two ends of the sleeve. Compared to the straight pipe compaction structure, in the steel-plastic composite pipe connection structure with a conical sleeve, the anti-pulling/removing force is the combination of the frication force and axial direction compaction force of the press ring to the conical pipe mouth, the anti-pulling/removing capability is enhanced, the compaction is more reliable, and the sealing performance is better.

Description

The steel-plastic composite pipe connecting structure of band taper sheath

Technical field

The utility model relates to a kind of seal for pipe joints linkage structure, particularly a kind of structure that is tightly connected of steel-plastic composite pressure pipe.

Background technique

Advantages such as steel-plastic composite pipe is a kind of emerging composite pipe tubing, and it has, and bearing capacity is strong, good corrosion resistance, linear expansion coeffcient are little at present, are applied to more and more that petroleum gas is carried, industrial and mineral is with various fields such as pipe, water drinking tube, waste pipes.

Existing steel-plastic composite pipe is straight tube structure before connection; The steel-plastic composite pipe of straight tube structure is when compressing connection; The main frictional force of pressure ring, lining and tube wall that relies on makes pipeline not by pull-off, and such structure needs pressure ring and lining that tube wall is applied bigger radial force, and not only installation requirement is higher; And it compresses reliable inadequately, and its anti-pull-out force also must be affected.

To above-mentioned deficiency, need to explore a kind of linkage structure that compresses of steel-plastic composite pipe, its installation requirement is reduced, and compress reliably, to improve the anti-pull-out force of linkage structure.

Summary of the invention

In view of this; The utility model provides a kind of steel-plastic composite pipe connecting structure with taper sheath; This structure is through compressing connection to the toroidal mouth of pipe; Make its anti-pull-out force except frictional force, also have axial pressing force, reach the resistance to plucking that improves linkage structure and take off ability, reduce the installation requirement purpose the toroidal mouth of pipe.

The steel-plastic composite pipe connecting structure of the band taper sheath of the utility model; Comprise that being placed in two respectively waits to dock pipeline outer pressure ring I, pressure ring II and two ends and insert two linings of treating the butt tube road mouth of pipe respectively; The mouth of pipe of said pipeline is a toroidal; The two ends of lining are the taper that cooperates with mouth of pipe inwall, and the inner cone that cooperates with mouth of pipe outer wall all is set on pressure ring I and the pressure ring II, are provided for regulating the controlling device of distance between the two between pressure ring I and the pressure ring II.

Further, be respectively arranged with the anchor thorn that is used to thrust mouth of pipe inwall on the conical surface at said lining two ends;

Further, be respectively arranged with the anchor thorn that thrusts the pipeline opening outer wall on the inner cone of said pressure ring I and pressure ring II;

Further, said anchor thorn is obliquely installed, and the true dip direction of anchor thorn is all towards the middle part of lining;

Further, be respectively arranged with seal ring on the conical surface at said lining two ends;

Further; Said controlling device is to be placed in pressure ring I and the outer swivel nut of pressure ring II; Swivel nut one end is provided with axial tension step, on the said pressure ring I outside thread is set, and the axially support step is set on the pressure ring II; The internal thread of swivel nut cooperates with outside thread on the pressure ring I, axially strains step and withstands support level along the tension direction;

Further, said controlling device is the many bolts that are connected in vertically between pressure ring I and the pressure ring II.

The beneficial effect of the utility model: the steel-plastic composite pipe connecting structure of the band taper sheath of the utility model; Comprise that being placed in two respectively waits to dock pipeline outer pressure ring I, pressure ring II and two ends and insert two linings of treating the butt tube road mouth of pipe respectively, the mouth of pipe of said pipeline is a toroidal, and the two ends of lining are the taper that cooperates with mouth of pipe inwall; The inner cone that cooperates with mouth of pipe outer wall all is set on pressure ring I and the pressure ring II; Be provided for regulating the controlling device of distance between the two between pressure ring I and the pressure ring II, during connection, pressure ring I and pressure ring II compress the tube wall of the mouth of pipe respectively with the lining two ends; Compressing structure with respect to straight tube; Its anti-pull-out force is frictional force and pressure ring to the making a concerted effort of the axial pressing force of the toroidal mouth of pipe, and effectively improves its resistance to plucking and takes off ability, and compress more reliable.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 compresses the structural representation of mode for the utility model swivel nut;

Fig. 2 compresses the structural representation of mode for the utility model bolt.

Embodiment

Below will combine accompanying drawing that the utility model is elaborated, as shown in the figure: the steel-plastic composite pipe connecting structure of the band taper sheath of present embodiment comprises that being placed in two respectively waits to dock pipeline 1 outer pressure ring I 2, pressure ring II 3 and two ends and insert two linings 4 of waiting to dock pipeline 1 mouth of pipe respectively; The mouth of pipe of said pipeline 1 expands into toroidal through dilating frock, and the two ends of lining 4 are the taper that cooperates with mouth of pipe inwall, and promptly the taper cylindrical at lining two ends is entrenched in the mouth of pipe of toroidal; The inner cone that cooperates with mouth of pipe outer wall all is set on pressure ring I 2 and the pressure ring II 3; Inner cone and lining two ends form the clamping of line up, are provided for regulating the controlling device of distance between the two between pressure ring I 2 and the pressure ring II 3, regulate pressure ring I 2 through controlling device and compress with pressure ring II 3; Can realize the butt joint of pipeline; Because the mouth of pipe is toroidal, and lining and pressure ring be and the corresponding taper of the mouth of pipe, after compressing; The anti-pull-out force of pipeline is the making a concerted effort of axial pressing force of tube wall frictional force and pressure ring line up; With respect to the linkage structure that compresses of straight tube structure, its anti-pull-out force strengthens, and compresses more reliable.

Further improvement as technique scheme; Be respectively arranged with the anchor thorn 5 that is used to thrust mouth of pipe inwall on the conical surface at said lining 4 two ends; Be respectively arranged with the anchor thorn 5 that thrusts the pipeline opening outer wall on the inner cone of said pressure ring I 2 and pressure ring II 3; Because the inside and outside wall of steel-plastic composite pipe is plastic material, all can effectively improve its anti-pull-out force after anchor thrusts.

As the further improvement of technique scheme, said anchor thorn 5 is obliquely installed, and the true dip direction of anchor thorn 5 is all towards the middle part of lining 4, and the anchor thorn is formed slopely barb, and pipeline is difficult for by pull-off more.

As the further improvement of technique scheme, be respectively arranged with seal ring 6 on the conical surface at said lining 4 two ends, reach best sealing effect, prevent the junction plane seepage between tapered sleeve and the mouth of pipe inwall.

As the further improvement of technique scheme, said controlling device is the swivel nut 7 that is placed in outside pressure ring I 2 and the pressure ring II 3, and swivel nut 7 one ends are provided with axial tension step 7a; On the said pressure ring I 2 outside thread is set; Axially support step 3a is set on the pressure ring II 3, and the internal thread of swivel nut 7 cooperates with outside thread on the pressure ring I 2, axially strains step 7a and withstands support level 3a along the tension direction; Through the rotation swivel nut is that spacing between two pressure rings of can regulate compresses; Simple in structure, easy to use, the pipeline of suitable≤50mm caliber connects.

Further improvement as technique scheme; Said controlling device is the many bolts 8 that are connected in vertically between pressure ring I 2 and the pressure ring II 3, can realize compressing of two pressure rings through tightening bolt, and is simple in structure; Implementation cost is low, and the pipeline of suitable >=63mm caliber connects.

Explanation is at last; Above embodiment is only unrestricted in order to the technological scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model; And not breaking away from the aim and the scope of the utility model technological scheme, it all should be encompassed in the middle of the claim scope of the utility model.

Claims

1. steel-plastic composite pipe connecting structure with taper sheath; It is characterized in that: comprise being placed in the lining (4) that two pipelines to be docked (1) mouth of pipe is inserted at two pipelines to be docked (1) outer pressure ring I (2), pressure ring II (3) and two ends respectively respectively; The mouth of pipe of said pipeline (1) is a toroidal; The two ends of lining (4) are the taper that cooperates with mouth of pipe inwall; The inner cone that cooperates with mouth of pipe outer wall all is set on pressure ring I (2) and the pressure ring II (3), is provided for regulating the controlling device of distance between the two between pressure ring I (2) and the pressure ring II (3).

2. the steel-plastic composite pipe connecting structure of band taper sheath according to claim 1 is characterized in that: be respectively arranged with the anchor thorn (5) that is used to thrust mouth of pipe inwall on the conical surface at said lining (4) two ends.

3. the steel-plastic composite pipe connecting structure of band taper sheath according to claim 2 is characterized in that: be respectively arranged with the anchor thorn (5) that thrusts the pipeline opening outer wall on the inner cone of said pressure ring I (2) and pressure ring II (3).

4. the steel-plastic composite pipe connecting structure of band taper sheath according to claim 3 is characterized in that: said anchor thorn (5) is obliquely installed, and the true dip direction of anchor thorn (5) is all towards the middle part of lining (4).

5. the steel-plastic composite pipe connecting structure of band taper sheath according to claim 4 is characterized in that: be respectively arranged with seal ring (6) on the conical surface at said lining (4) two ends.

6. according to the steel-plastic composite pipe connecting structure of any described band taper sheath of claim 1-5; It is characterized in that: said controlling device is for being placed in the outer swivel nut (7) of pressure ring I (2) and pressure ring II (3); Swivel nut (7) one ends are provided with axial tension step (7a); On the said pressure ring I (2) outside thread is set; Axially support step (3a) is set on the pressure ring II (3), and the internal thread of swivel nut (7) cooperates with outside thread on the pressure ring I (2), axially strains step (7a) and withstands support level (3a) along the tension direction.

7. according to the steel-plastic composite pipe connecting structure of any described band taper sheath of claim 1-5, it is characterized in that: said controlling device is the many bolts (8) that are connected in vertically between pressure ring I (2) and the pressure ring II (3).