CN220891329U - Plastic lined steel pipe - Google Patents

Plastic lined steel pipe Download PDF

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Publication number
CN220891329U
CN220891329U CN202322135699.XU CN202322135699U CN220891329U CN 220891329 U CN220891329 U CN 220891329U CN 202322135699 U CN202322135699 U CN 202322135699U CN 220891329 U CN220891329 U CN 220891329U
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China
Prior art keywords
steel pipe
flange
pipeline
sealing
pipe
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CN202322135699.XU
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Chinese (zh)
Inventor
王福泉
王玉芳
郭建军
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Hebei Zhangjiakou Kexin Anti Corrosion Engineering Technology Co ltd
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Hebei Zhangjiakou Kexin Anti Corrosion Engineering Technology Co ltd
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Priority to CN202322135699.XU priority Critical patent/CN220891329U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment

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  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)

Abstract

The utility model belongs to the technical field of steel pipes, and particularly relates to a plastic lining steel pipe, which comprises a left pipeline and a right pipeline, wherein one end of the left pipeline is fixedly communicated with a left flange, one end of the right pipeline is fixedly communicated with a right flange, a sealing connection assembly is arranged between the left flange and the right flange, the left pipeline and the right pipeline are identical in structure and respectively comprise a steel pipe, an outer PE pipe is fixedly sleeved on the outer side of the steel pipe, and an inner PE pipe is fixedly sleeved on the inner side of the steel pipe. The utility model has reasonable structural design, ensures that the pipelines have the functions of heat preservation, wear resistance, corrosion resistance, better use effect, convenient connection between the pipelines, and can achieve the effect of twice sealing, and has a labyrinth sealing structure, thereby further improving the sealing effect and avoiding the condition of liquid leakage at the joint of the two pipelines.

Description

Plastic lined steel pipe
Technical Field
The utility model relates to the technical field of steel pipes, in particular to a plastic lined steel pipe.
Background
The lining plastic composite steel pipe is to adopt a tight lining composite technology to line plastic base on the inner side of the steel pipe, so that the medium conveyed in the pipe is isolated from the outer environment of the pipe and is not corroded by the medium and environmental factors, and the effect of prolonging the service life of the pipeline is achieved.
However, the existing plastic-lined steel pipe is found to have defects in the use process, when the plastic-lined steel pipe is connected, the conventional sealing piece is generally adopted for sealing, if the hydraulic pressure in the plastic-lined steel pipe is large, the condition of liquid leakage is easy to occur, and then the sealing effect is poor, and the plastic-lined steel pipe does not have the functions of heat preservation, durability and corrosion resistance, so that the use effect is poor, and therefore, the plastic-lined steel pipe is provided for solving the problems.
Disclosure of utility model
The utility model aims to solve the defects in the prior art and provides a plastic-lined steel pipe.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a lining plastic steel pipe, includes left pipeline and right pipeline, the fixed intercommunication of one end of left pipeline has left flange, the fixed intercommunication of one end of right pipeline has right flange, be provided with sealing connection subassembly between left flange and the right flange, left pipeline is the same with the structure of right pipeline, all includes the steel pipe, the outside fixed cover of steel pipe is equipped with outer PE pipe, the fixed cover in inboard of steel pipe is equipped with interior PE pipe.
Preferably, the inner side of the inner PE pipe is fixedly sleeved with a corrosion-resistant layer, and the inner side of the corrosion-resistant layer is fixedly connected with a waterproof layer.
Preferably, the outer side of the outer PE pipe is fixedly sleeved with an insulation layer, and the outer side of the insulation layer is fixedly sleeved with a wear-resistant layer.
Preferably, the outer side of the wear-resistant layer is fixedly sleeved with a protective coating.
Preferably, an inner annular groove is formed in one side of the left flange, an outer annular groove is formed in one side of the right flange, the sealing connection assembly comprises a plurality of screws, an inner sealing convex ring arranged in the inner annular groove in a sliding sleeve mode and an outer sealing convex ring arranged in the outer annular groove in a sliding sleeve mode, nuts are connected with the outer threads of the screws in a threaded mode, and the nuts are movably abutted to one side of the left flange.
Preferably, the inner annular groove is fixedly connected with an inner sealing ring, the outer annular groove is fixedly connected with an outer sealing ring, the outer sealing convex ring is movably abutted to one side of the outer sealing ring, and the inner sealing convex ring is movably abutted to one side of the inner sealing ring.
Preferably, a plurality of jacks are formed in one sides of the left flange and the right flange, and the screw is movably inserted into the corresponding jacks.
According to the plastic-lined steel pipe, the inner PE pipe and the outer PE pipe are arranged, so that the steel pipe can be internally and externally lined with plastic, a conveying medium in the pipe and the environment outside the pipe are completely isolated and are not corroded by the medium and environmental factors, the service life of the left and right pipelines is prolonged, the purpose of heat preservation can be achieved through the heat preservation layer, the left and right pipelines are more wear-resistant and durable through the wear-resistant layer, the anti-corrosion and anti-oxidation effects on the surfaces of the left and right pipelines are better through the arrangement of the protective coating, the integral strength of the left and right pipelines is ensured through the steel pipe, the corrosion of liquid to the left and right pipelines can be avoided through the arrangement of the anti-corrosion layer, the waterproof effect of the left and right pipelines is better, and the leakage of the liquid is avoided through the waterproof layer;
According to the plastic-lined steel pipe, the left flange and the right flange can be connected together through the arrangement of the screw rod, the insertion hole and the nut, so that the left pipeline and the right pipeline can be stably communicated together, the inner sealing convex ring is inserted into the inner annular groove, the outer sealing convex ring is inserted into the outer annular groove, and meanwhile, the effect of twice sealing can be achieved through the arrangement of the inner sealing ring and the outer sealing ring, and the plastic-lined steel pipe is in a labyrinth sealing structure, so that the sealing effect is further improved, and the condition of liquid leakage at the joint of the two pipelines is avoided;
The utility model has reasonable structural design, ensures that the pipelines have the functions of heat preservation, wear resistance, corrosion resistance, better use effect, convenient connection between the pipelines, and can achieve the effect of twice sealing, and has a labyrinth sealing structure, thereby further improving the sealing effect and avoiding the condition of liquid leakage at the joint of the two pipelines.
Drawings
FIG. 1 is a schematic structural view of a plastic lined steel pipe according to the present utility model;
FIG. 2 is a schematic diagram of a left pipe of a plastic lined steel pipe according to the present utility model;
FIG. 3 is a schematic diagram of a portion A of a plastic lined steel pipe according to the present utility model.
In the figure: 1. a left pipe; 2. a right pipe; 3. a right flange; 4. a left flange; 5. a steel pipe; 6. an outer PE tube; 7. an inner PE tube; 8. a corrosion resistant layer; 9. a waterproof layer; 10. a heat preservation layer; 11. a wear-resistant layer; 12. a protective coating; 13. an inner annular groove; 14. an inner sealing collar; 15. an inner seal ring; 16. an outer annular groove; 17. an outer sealing collar; 18. an outer seal ring; 19. a jack; 20. a screw; 21. and (3) a nut.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, a plastic lined steel pipe comprises a left pipe 1 and a right pipe 2, wherein one end of the left pipe 1 is fixedly communicated with a left flange 4, one end of the right pipe 2 is fixedly communicated with a right flange 3, a sealing connection assembly is arranged between the left flange 4 and the right flange 3, the left pipe 1 and the right pipe 2 are identical in structure and respectively comprise a steel pipe 5, an outer PE pipe 6 is fixedly sleeved on the outer side of the steel pipe 5, an inner PE pipe 7 is fixedly sleeved on the inner side of the steel pipe 5, and the inner PE pipe 7 and the outer PE pipe 6 are arranged to enable the steel pipe 5 to be internally and externally lined with plastic, so that a conveying medium in the pipe and the outer environment of the pipe are completely isolated from being corroded by the medium and environmental factors, and the service life of the left pipe and the right pipe is prolonged.
According to the utility model, the inner side of the inner PE pipe 7 is fixedly sleeved with the corrosion-resistant layer 8, the inner side of the corrosion-resistant layer 8 is fixedly connected with the waterproof layer 9, the corrosion of liquid to the left and right pipelines can be avoided through the arrangement of the corrosion-resistant layer 8, and the waterproof effect of the left and right pipelines is better through the waterproof layer 9, so that the leakage of the liquid is avoided.
According to the utility model, the outer side of the outer PE pipe 6 is fixedly sleeved with the heat insulation layer 10, the outer side of the heat insulation layer 10 is fixedly sleeved with the wear-resistant layer 11, the heat insulation purpose can be achieved through the heat insulation layer 10, and the left and right pipelines are more wear-resistant and durable through the wear-resistant layer 11.
According to the utility model, the outer side of the wear-resistant layer 11 is fixedly sleeved with the protective coating 12, and the anti-corrosion and anti-oxidation effects of the outer surfaces of the left and right pipelines are better through the arrangement of the protective coating 12.
In the utility model, an inner annular groove 13 is formed in one side of a left flange 4, an outer annular groove 16 is formed in one side of a right flange 3, a sealing connection assembly comprises a plurality of screws 20, an inner sealing convex ring 14 sleeved in the inner annular groove 13 in a sliding manner and an outer sealing convex ring 17 sleeved in the outer annular groove 16 in a sliding manner, nuts 21 are connected to the outer sides of the screws 20 in a threaded manner, the nuts 21 are movably abutted to one side of the left flange 4, a plurality of insertion holes 19 are formed in one sides of the left flange 4 and the right flange 3, the screws 20 are movably inserted into the corresponding insertion holes 19, an inner sealing ring 15 is fixedly connected in the inner annular groove 13, an outer sealing ring 18 is fixedly connected in the outer annular groove 16, the outer sealing convex ring 17 is movably abutted to one side of the outer sealing ring 18, and the inner sealing convex ring 14 is movably abutted to one side of the inner sealing ring 15.
By adopting the technical scheme, the left flange 4 and the right flange 3 can be connected together through the arrangement of the screw rod 20, the jack and the nut 21, the left pipeline 1 and the right pipeline 2 can be stably communicated together, the inner sealing convex ring 14 is inserted into the inner annular groove 13, the outer sealing convex ring 17 is inserted into the outer annular groove 16, and meanwhile, the effect of sealing for two times can be achieved through the arrangement of the inner sealing ring 15 and the outer sealing ring 18, and the sealing structure is of a labyrinth type, so that the sealing effect is further improved, and the condition of liquid leakage at the joint of the two pipelines is avoided.
In the utility model, when the pipe is in operation, the inner PE pipe 7 and the outer PE pipe 6 are arranged, the purpose of lining plastic on the inner and outer pipes 5 can be realized, the conveying medium in the pipe and the outer environment of the pipe are completely isolated, the pipe is not corroded by the medium and the environmental factors, the service life of the left and right pipes is prolonged, the purpose of heat preservation can be realized through the heat preservation layer 10, the left and right pipes are more wear-resistant and durable through the wear-resistant layer 11, the anti-corrosion and anti-oxidation effects on the outer surfaces of the left and right pipes are better through the arrangement of the protective coating 12, the overall strength of the left and right pipes is ensured through the steel pipe 5, the corrosion of liquid on the left and right pipes can be avoided through the arrangement of the anti-corrosion layer 8, the waterproof layer 9 is better, the leakage of the liquid is avoided, the left and right pipes can be connected together through the arrangement of the screw rod 20, the jack and the nut 21, the left flange 4 and the right flange 3, the left pipe 1 and the right pipe 2 can be stably communicated together, the inner sealing convex ring 14 is inserted into the inner annular groove 13, the outer sealing convex ring 17 is inserted into the outer ring 16, and the sealing effect is further improved through the arrangement of the inner sealing ring 15 and the sealing ring 18, and the sealing effect of the sealing ring is further realized at two sealing structures.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (7)

1. The utility model provides a steel pipe is moulded to lining, its characterized in that, including left pipeline (1) and right pipeline (2), the one end fixed intercommunication of left pipeline (1) has left flange (4), the one end fixed intercommunication of right pipeline (2) has right flange (3), be provided with sealing connection subassembly between left flange (4) and right flange (3), the structure of left pipeline (1) and right pipeline (2) is the same, all includes steel pipe (5), the outside fixed cover of steel pipe (5) is equipped with outer PE pipe (6), the inboard fixed cover of steel pipe (5) is equipped with interior PE pipe (7).
2. A plastic lined steel pipe according to claim 1, characterized in that the inner side of the inner PE pipe (7) is fixedly sleeved with a corrosion resistant layer (8), and the inner side of the corrosion resistant layer (8) is fixedly connected with a waterproof layer (9).
3. A plastic lined steel pipe according to claim 1, characterized in that the outer side of the outer PE pipe (6) is fixedly sleeved with a heat insulating layer (10), and the outer side of the heat insulating layer (10) is fixedly sleeved with a wear-resistant layer (11).
4. A plastic lined steel pipe according to claim 3, characterized in that the outer side of the wear layer (11) is fixedly sheathed with a protective coating (12).
5. The plastic lined steel pipe according to claim 1, wherein an inner annular groove (13) is formed in one side of the left flange (4), an outer annular groove (16) is formed in one side of the right flange (3), the sealing connection assembly comprises a plurality of screws (20), an inner sealing convex ring (14) sleeved on the inner annular groove (13) in a sliding mode and an outer sealing convex ring (17) sleeved on the outer annular groove (16) in a sliding mode, nuts (21) are connected to the outer side threads of the screws (20), and the nuts (21) are movably abutted to one side of the left flange (4).
6. A plastic lined steel pipe according to claim 5, wherein an inner sealing ring (15) is fixedly connected in the inner annular groove (13), an outer sealing ring (18) is fixedly connected in the outer annular groove (16), the outer sealing convex ring (17) is movably abutted against one side of the outer sealing ring (18), and the inner sealing convex ring (14) is movably abutted against one side of the inner sealing ring (15).
7. A plastic lined steel pipe according to claim 1, wherein a plurality of insertion holes (19) are formed in one side of the left flange (4) and one side of the right flange (3), and the screw (20) is movably inserted into the corresponding insertion holes (19).
CN202322135699.XU 2023-08-09 2023-08-09 Plastic lined steel pipe Active CN220891329U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322135699.XU CN220891329U (en) 2023-08-09 2023-08-09 Plastic lined steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322135699.XU CN220891329U (en) 2023-08-09 2023-08-09 Plastic lined steel pipe

Publications (1)

Publication Number Publication Date
CN220891329U true CN220891329U (en) 2024-05-03

Family

ID=90871307

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322135699.XU Active CN220891329U (en) 2023-08-09 2023-08-09 Plastic lined steel pipe

Country Status (1)

Country Link
CN (1) CN220891329U (en)

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