CN211118213U

CN211118213U - Plastic composite pipe joint

Info

Publication number: CN211118213U
Application number: CN201920955836.5U
Authority: CN
Inventors: 刘胜利; 宫汝军; 栾仕杰; 蔺跃武
Original assignee: Shengli Oilfield Xinhai Xingda Industrial Group Co ltd
Current assignee: Shengli Oilfield Xinhai Xingda Industrial Group Co ltd
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-07-28
Anticipated expiration: 2029-06-24

Abstract

The utility model provides a plastic composite pipe joint, which belongs to the technical field of pipeline joints and comprises a joint body, wherein one end of the joint body is fixedly connected with a joint outer sleeve outside, a cavity for accommodating a plastic composite pipe is formed between the joint outer sleeve and the joint body, and the plastic composite pipe comprises a plastic composite pipe outer protective layer, a plastic composite pipe reinforcing layer and a plastic composite pipe base layer which are sequentially arranged from outside to inside; the outer wall of the cavity inner joint body and the inner wall of the joint outer sleeve are provided with a plurality of tooth blocks used for clamping and fixing the plastic composite pipe. The embodiment of the utility model provides a compare in prior art, press from both sides the plastics composite pipe and connect the body and connect the overcoat through the tooth piece and press from both sides tightly even as an organic whole, do not receive the influence of plastics plastic deformation and temperature yield, connect stably and joint strength is high, long service life is particularly useful for the connection of oil conveying pipeline for oil transportation cost greatly reduced improves oil transportation's fail safe nature simultaneously.

Description

Plastic composite pipe joint

Technical Field

The utility model relates to a pipe joint specifically is a plastic composite pipe connects.

Background

Liquid substances and petroleum produced by a petroleum production well are gathered and conveyed to a combined station, the petroleum produced by the oil well mostly contains corrosion price, most of the petroleum is prevented from being viscous and needs to be heated so as to be beneficial to flow and conveying, steel pipelines are usually adopted for conveying in the past, the construction workload of laying the steel pipelines is large, the construction period is long, the corrosion resistance of steel pipes is poor, the service life is short, the flow resistance loss is large, the heat loss is large, and the oil conveying cost is high, so people think that the continuously reinforced plastic composite pipes have high pressure resistance and corrosion resistance, good heat insulation performance and small liquid flow resistance, the theoretical service life can reach more than 30 years, the bottleneck of the popularization and application of the current plastic composite pipes is that the structural form of a pipeline joint is difficult to meet the application, an internal-expansion external hoop structure is mostly adopted, the defect is that the continuously reinforced plastic composite pipes can not be directly combined with a reinforcing layer of a, the pipeline joint and the pipeline are connected together, plastic yield stress disappears along with the lapse of time, the binding force is reduced, especially when the high-temperature petroleum is conveyed, the binding force between the plastic flexible joint and the pipeline is lost, oil leaks at light time, and the pipeline joint is pushed out under pressure to cause accidents at heavy time, so the plastic reinforced composite pipe is not widely applied to the petroleum conveying.

From data verification, at present, no mature plastic composite pipe joint exists at home and abroad as a connection mode of the plastic composite pipe. Although some manufacturers adopt the connection mode of an internal expansion and external hoop structure, the plastic composite pipe joint is not satisfactory, the plastic composite pipe and the pipeline joint are extruded by the tooth block to enable the plastic composite pipe and the joint to be connected into a whole, the connection mode is not influenced by plastic deformation and temperature, the connection stability and the connection strength are high, and the service life of decades of years is ensured.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the embodiments of the present invention is to provide a plastic composite pipe joint.

In order to solve the technical problem, the utility model provides a following technical scheme:

a plastic composite pipe joint comprises a joint body, wherein a joint outer sleeve is fixedly connected to the outer part of one end of the joint body, a cavity for containing a plastic composite pipe is formed between the joint outer sleeve and the joint body, and the plastic composite pipe comprises a plastic composite pipe outer protective layer, a plastic composite pipe reinforcing layer and a plastic composite pipe base layer which are sequentially arranged from outside to inside; the outer wall of the cavity inner joint body and the inner wall of the joint outer sleeve are provided with a plurality of tooth blocks used for clamping and fixing the plastic composite pipe.

As a further improvement of the utility model: the joint body and the joint outer sleeve are made of steel.

As a further improvement of the utility model: the tooth block is of a conical structure.

As a further improvement of the utility model: a plurality of first sealing rings are further arranged between the joint body and the plastic composite pipe base layer.

As a further improvement of the present invention: and a plurality of second sealing rings are arranged between the joint outer sleeve and the outer protective layer of the plastic composite pipe.

As a further improvement of the present invention: the first sealing ring and the second sealing ring are both of O-shaped structures.

As a further improvement of the present invention: the first sealing ring and the second sealing ring are made of rubber materials.

Compared with the prior art, the beneficial effects of the utility model are that:

the embodiment of the utility model provides a compare in prior art, press from both sides the plastics composite pipe and connect the body and connect the overcoat through the tooth piece and press from both sides tightly even as an organic whole, do not receive the influence of plastics plastic deformation and temperature yield, connect stably and joint strength is high, long service life is particularly useful for the connection of oil conveying pipeline for oil conveying cost greatly reduced improves oil conveying's fail safe nature simultaneously, has greatly reduced the probability that the incident takes place.

Drawings

FIG. 1 is a schematic structural view of a plastic composite pipe joint;

in the figure: 1-joint body, 2-joint jacket, 3-first sealing ring, 4-tooth block, 5-second sealing ring, 6-plastic composite pipe outer protective layer, 7-plastic composite pipe reinforcing layer and 8-plastic composite pipe base layer.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1, the embodiment provides a plastic composite pipe joint, which includes a joint body 1, a joint outer sleeve 2 is fixedly connected to an outer portion of one end of the joint body, a cavity for accommodating a plastic composite pipe is formed between the joint outer sleeve 2 and the joint body 1, and the plastic composite pipe includes a plastic composite pipe outer protective layer 6, a plastic composite pipe reinforcing layer 7 and a plastic composite pipe base layer 8, which are sequentially arranged from outside to inside; the outer wall of the cavity inner joint body 1 and the inner wall of the joint outer sleeve 2 are provided with a plurality of tooth blocks 4 used for clamping and fixing the plastic composite pipe.

During the installation, insert the cavity with the plastic composite pipe tip in, exert pressure to joint overcoat 2 for inside tooth piece 4 inserted the plastic composite pipe, and then accomplish the plastic composite pipe and connect body 1 to be connected fixedly.

Specifically, the tooth block 4 is respectively inserted into the outer protective layer 6 of the plastic composite pipe and the base layer 8 of the plastic composite pipe to be in rigid contact with the reinforced layer 7 of the plastic composite pipe, so that the influence of temperature yield and plastic deformation is avoided.

The material of the joint body 1 and the joint outer sleeve 2 is not limited, and in this embodiment, it is preferable that the joint body 1 and the joint outer sleeve 2 are both made of steel.

The shape of the tooth block 4 is not limited, and the tooth block can be in a sawtooth shape, a conical shape and the like, and in the embodiment, in order to improve the anti-pulling capacity of the plastic composite pipe, the tooth block 4 is in a conical structure.

The working principle of the embodiment is as follows: during the installation, insert the cavity with the plastic composite pipe tip in, exert pressure to joint overcoat 2 for inside tooth piece 4 inserted the plastic composite pipe, and then accomplish the plastic composite pipe and connect body 1 to be connected fixedly.

Example 2

Referring to fig. 1, in this embodiment, compared with embodiment 1, a plurality of first sealing rings 3 are further disposed between the joint body 1 and the plastic composite pipe base layer 8, and by the arrangement of the first sealing rings 3, while the sealing performance between the joint body 1 and the plastic composite pipe base layer 8 is ensured, the expansion function is also played, so that the joint body 1 and the plastic composite pipe base layer 8 are connected more tightly.

A plurality of second sealing rings 5 are arranged between the joint outer sleeve 2 and the outer plastic composite pipe protective layer 6, and in the same way, through the arrangement of the second sealing rings 5, the sealing performance between the joint outer sleeve 2 and the outer plastic composite pipe protective layer 6 is ensured, and meanwhile, the expansion effect is achieved, so that the joint outer sleeve 2 is more tightly connected with the outer plastic composite pipe protective layer 6.

The first sealing ring 3 and the second sealing ring 5 are both of O-shaped structures and are made of rubber materials.

The embodiment of the utility model provides a compare in prior art, press from both sides the compound pipe of plastics and connect body 1 and connect overcoat 2 to press from both sides tightly even as an organic whole through tooth piece 4, do not receive the influence of plastics plastic deformation and temperature yield, connect stably and joint strength is high, long service life is particularly useful for the connection of oil conveying pipeline for oil conveying cost greatly reduced improves oil conveying's fail safe nature simultaneously, has greatly reduced the probability that the incident takes place.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A plastic composite pipe joint comprises a joint body (1), wherein a joint outer sleeve (2) is fixedly connected to the outer part of one end of the joint body, and a cavity for containing a plastic composite pipe is formed between the joint outer sleeve (2) and the joint body (1), and is characterized in that the plastic composite pipe comprises a plastic composite pipe outer protective layer (6), a plastic composite pipe reinforcing layer (7) and a plastic composite pipe base layer (8) which are sequentially arranged from outside to inside; the outer wall of the cavity inner joint body (1) and the inner wall of the joint outer sleeve (2) are provided with a plurality of tooth blocks (4) used for clamping and fixing the plastic composite pipe.

2. The plastic composite pipe joint according to claim 1, wherein the joint body (1) and the joint outer sleeve (2) are made of steel.

3. The plastic composite pipe joint according to claim 1, wherein the tooth blocks (4) have a tapered structure.

4. The plastic composite pipe joint according to claim 1, wherein a plurality of first sealing rings (3) are further arranged between the joint body (1) and the plastic composite pipe base layer (8).

5. The plastic composite pipe joint according to claim 4, wherein a plurality of second sealing rings (5) are arranged between the joint outer sleeve (2) and the outer protective layer (6) of the plastic composite pipe.

6. The plastic composite pipe joint according to claim 5, wherein the first sealing ring (3) and the second sealing ring (5) are both O-shaped structures.

7. The plastic composite pipe joint according to claim 5 or 6, wherein the first sealing ring (3) and the second sealing ring (5) are made of rubber.