CN219317931U - Novel flexible coupling joint for composite pipe - Google Patents

Abstract

The utility model relates to a novel connecting joint for a flexible composite pipe, which comprises a composite pipe a and a composite pipe b, wherein the composite pipe a and the composite pipe b respectively comprise a composite pipe outer protective layer, a composite pipe reinforcing layer and a composite pipe lining layer, a welding groove a is formed in the end part of the composite pipe a, a welding groove b is formed in the end part of the composite pipe b, a connecting component is clamped on the composite pipe a and the composite pipe b, the welding groove a and the welding groove b are used for connecting the composite pipe a and the composite pipe b, the connecting component is used for sealing the joint of the composite pipe a and the composite pipe b, the sealing property of the joint is improved, and meanwhile, the strength of the joint is enhanced.

Description

Novel flexible coupling joint for composite pipe

Technical Field

The utility model relates to the technical field of flexible composite pipe connection, in particular to a novel flexible composite pipe connection joint.

Background

The flexible composite pipe is a pipeline which is made of polymer composite material, has certain high strength, high pressure, corrosion resistance, scaling resistance, small friction coefficient, good heat preservation, good flexibility and long service life and is used for conveying mediums such as hydrogen, natural gas, petroleum and the like.

However, when the two existing flexible composite pipes are connected by hot melt butt welding, as the two composite pipes can extrude plastics to the edges of the composite pipes in the extrusion molding process, the edges are manually polished and cleaned, so that the working efficiency is reduced, and in addition, the strength of the connecting piece at the connecting position of the existing composite pipes is low, the sealing performance is poor, and the installation is complex.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, and provides a novel connecting joint for a flexible composite pipe, wherein by arranging a welding groove a and a welding groove b, when the composite pipe a and the composite pipe b are subjected to hot-melt butt welding, plastics cannot be extruded to the edge of the composite pipe, and cleaning is not needed manually, so that the working efficiency is improved, the connecting part of the composite pipe a and the composite pipe b is connected by arranging a fixed snap ring, a movable snap ring, a connecting bolt and a fastening nut, the sealing property of the connecting part is improved, and the strength of the connecting part is enhanced.

The technical solution of the utility model is as follows:

the utility model provides a novel flexible union coupling for compound pipe, includes compound pipe a and compound pipe b, compound pipe a and compound pipe b all include compound outer protective layer, compound pipe enhancement layer and compound pipe inner liner, welding groove a has been seted up to compound pipe a's tip, welding groove b has been seted up to compound pipe b's tip, joint has coupling assembling on compound pipe a and the compound pipe b, welding groove a and welding groove b are used for connecting compound pipe a and compound pipe b, coupling assembling is used for sealing compound pipe a and compound pipe b's junction.

Preferably, the outer walls of the composite pipe a and the composite pipe b are provided with a plurality of grooves, and the grooves are of trapezoid tooth-shaped structures.

As one preferable, the connecting component comprises a fixed snap ring, a movable snap ring rotationally connected to the fixed snap ring, a fastening plate a fixedly arranged on the fixed snap ring and a fastening plate b fixedly arranged on the movable snap ring, wherein a plurality of through holes are formed in the fastening plate a and the fastening plate b.

As one preferable mode, a plurality of connecting bolts are arranged in the through holes, the end parts of the connecting bolts are sleeved with fastening nuts through threads, and the fixed snap ring and the movable snap ring are fixedly connected through the connecting bolts and the fastening nuts.

As one preferable mode, the inner walls of the fixed snap ring and the movable snap ring are provided with a plurality of protrusions, the protrusions are of trapezoid tooth-shaped structures, and the surfaces of the protrusions are also provided with anti-slip pads.

Preferably, a sealing gasket is arranged on the end part of the fixing snap ring.

As yet another preference, the recess cooperates with a projection.

The utility model has the beneficial effects that:

1. the utility model is provided with the welding groove a and the welding groove b, and by arranging the welding groove a and the welding groove b, when the composite pipe a and the composite pipe b are subjected to hot-melt butt welding, plastic overflow can be prevented, the welded part is not required to be cleaned later, and the connecting efficiency is improved.

2. The utility model is provided with the connecting component, when the welding of the composite pipe a and the composite pipe b is finished, the connecting part of the composite pipe a and the composite pipe b is sealed by arranging the fixed snap ring, the movable snap ring, the connecting bolt and the fastening nut, and meanwhile, the strength of the connecting part is enhanced.

3. The utility model is also provided with the sealing gasket and the anti-slip gasket, so that the sealing performance is improved when the fixed snap ring and the movable snap ring fix the composite pipe a and the composite pipe b, and the fixed snap ring and the movable snap ring are prevented from slipping on the composite pipe a and the composite pipe b by the anti-slip gasket, thereby affecting the effect.

In conclusion, the utility model has the advantages of good sealing performance, high connection strength and the like, and is suitable for the technical field of flexible composite pipe pipeline connection.

Description of the drawings:

the utility model is further described with reference to the accompanying drawings:

FIG. 1 is a connection joint for a novel flexible composite pipe;

FIG. 2 is a schematic cross-sectional structure of a welding groove a and a welding groove b;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

FIG. 4 is a schematic structural view of a connection assembly;

FIG. 5 is a schematic view of the structure of the stationary snap ring and the movable snap ring sealing the joint between the composite pipe a and the composite pipe b;

Detailed Description

The technical solutions in the embodiments of the present utility model are clearly and completely described below with reference to the accompanying drawings.

Example 1

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 to 5, a novel flexible joint for a composite pipe comprises a composite pipe a1 and a composite pipe b2, wherein the composite pipe a1 and the composite pipe b2 comprise a composite pipe outer protective layer 3, a composite pipe reinforcing layer 4 and a composite pipe lining layer 5, a welding groove a11 is formed in the end part of the composite pipe a1, a welding groove b21 is formed in the end part of the composite pipe b2, a connecting component 6 is clamped on the composite pipe a1 and the composite pipe b2, the welding groove a11 and the welding groove b21 are used for connecting the composite pipe a1 and the composite pipe b2, and the connecting component 6 is used for sealing the joint of the composite pipe a1 and the composite pipe b 2.

As shown in fig. 3, the outer walls of the composite tube a1 and the composite tube b2 are provided with a plurality of grooves 7, and the grooves 7 are of trapezoid tooth-shaped structures.

As shown in fig. 4, the connection assembly 6 includes a fixing snap ring 61, a movable snap ring 62 rotatably connected to the fixing snap ring 61, a fastening plate a63 fixedly arranged on the fixing snap ring 61, and a fastening plate b64 fixedly arranged on the movable snap ring 62, wherein a plurality of through holes 65 are formed in the fastening plate a63 and the fastening plate b64, when in use, the fixing snap ring 61 is clamped on the composite pipe a1 and the composite pipe b2, the movable snap ring 62 is rotated to enable the fastening plate a63 and the fastening plate b64 to be attached, after the attachment, a connecting bolt 66 is installed in the through holes, a fastening nut 67 is screwed on the connecting bolt 66, the fixing snap ring 61 and the movable snap ring 62 are fixed, so that the joint of the composite pipe a1 and the composite pipe b2 is sealed, the strength of the joint is enhanced, and the fixing snap ring 61 and the movable snap ring 62 are arranged outside the composite pipe a1 and the composite pipe b2, so that the fixing snap ring 61 and the movable snap ring 62 are prevented from being in contact with media in the pipe and corrosion is avoided.

As shown in fig. 1 and 4, a plurality of through holes 65 are internally provided with connecting bolts 66, the end parts of the connecting bolts 66 are respectively in threaded sleeve connection with a fastening nut 67, and the fixed snap ring 61 and the movable snap ring 62 are fixedly connected through the connecting bolts 66 and the fastening nuts 67.

As shown in fig. 4, the inner walls of the fixed snap ring 61 and the movable snap ring 62 are provided with a plurality of protrusions 68, the protrusions 68 are of trapezoid tooth-shaped structures, the surfaces of the protrusions 68 are also provided with anti-slip pads 69, and when the anti-slip device is used, the protrusions 68 are clamped into the grooves 7, and the grooves 7 and the protrusions 68 are of trapezoid tooth-shaped structures, so that the composite pipe a1 and the composite pipe b2 can be in sealing and fastening connection with the fixed snap ring 61 and the movable snap ring 62.

As shown in fig. 5, the groove 7 is matched with the protrusion 68, and after the groove 7 is attached to the protrusion 68, the fixed snap ring 61 and the movable snap ring 62 have fastening and sealing effects on the composite pipe a1 and the composite pipe b 2.

Example two

As shown in fig. 4, wherein the same or corresponding parts as those in the first embodiment are given the same reference numerals as those in the first embodiment, only the points of distinction from the first embodiment will be described below for the sake of brevity; the second embodiment is different from the first embodiment in that: the end of the fixing clip ring 61 is provided with a gasket 8.

Here, in the present embodiment, by providing the gasket 8 on the end portion of the fixing snap ring 61, when the movable snap ring 62 is rotated downward so that the fastening plate a63 and the fastening plate b64 are attached, the sealability between the fixing snap ring 61 and the movable snap ring 62 is improved, thereby improving the sealability to the joint of the composite pipe a1 and the composite pipe b 2.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "front and rear", "left and right", etc. are based on the directions or positional relationships shown in the drawings, are merely for describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Of course, in this disclosure, those skilled in the art will understand that the term "a" or "an" is to be interpreted as "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, and in another embodiment, the number of elements may be multiple, and the term "a" is not to be construed as limiting the number.

While the utility model has been described with reference to the preferred embodiments, it should be noted that the utility model is not limited to the above embodiments, and that various changes and modifications can be made by those skilled in the art without departing from the structure of the utility model, and these should also be regarded as the scope of the utility model without affecting the effect and practicality of the implementation of the utility model.

Claims (7)

1. The utility model provides a novel flexible composite pipe connects, its characterized in that: including compound pipe a (1) and compound pipe b (2), compound pipe a (1) and compound pipe b (2) all include compound pipe outer protective layer (3), compound pipe enhancement layer (4) and compound pipe inner liner (5), welding groove a (11) have been seted up to the tip of compound pipe a (1), welding groove b (21) have been seted up to the tip of compound pipe b (2), joint has coupling assembling (6) on compound pipe a (1) and the compound pipe b (2), welding groove a (11) and welding groove b (21) are used for being connected compound pipe a (1) and compound pipe b (2), coupling assembling (6) are used for sealing the junction of compound pipe a (1) and compound pipe b (2).

2. A novel flexible composite pipe joint as claimed in claim 1 wherein: the outer walls of the composite pipe a (1) and the composite pipe b (2) are provided with a plurality of grooves (7), and the grooves (7) are of trapezoid tooth-shaped structures.

3. A novel flexible composite pipe joint as claimed in claim 1 wherein: the connecting assembly (6) comprises a fixed snap ring (61), a movable snap ring (62) rotatably connected to the fixed snap ring (61), a fastening plate a (63) fixedly arranged on the fixed snap ring (61) and a fastening plate b (64) fixedly arranged on the movable snap ring (62), wherein a plurality of through holes (65) are formed in the fastening plate a (63) and the fastening plate b (64).

4. A novel flexible composite pipe joint as claimed in claim 3 wherein: connecting bolts (66) are arranged in the through holes (65), fastening nuts (67) are sleeved at the end parts of the connecting bolts (66) in a threaded mode, and the fixing snap rings (61) and the movable snap rings (62) are fixedly connected through the connecting bolts (66) and the fastening nuts (67).

5. A novel flexible composite pipe joint as claimed in claim 3 wherein: the inner walls of the fixed snap ring (61) and the movable snap ring (62) are respectively provided with a plurality of protrusions (68), the protrusions (68) are of trapezoid tooth-shaped structures, and anti-slip pads (69) are further arranged on the surfaces of the protrusions (68).

6. A novel flexible composite pipe joint as claimed in claim 3 wherein: the end part of the fixing snap ring (61) is provided with a sealing gasket (8).

7. A novel flexible composite pipe joint as claimed in claim 2 wherein: the grooves (7) are matched with the protrusions (68).

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