Multipurpose 3PE anti-corrosion steel pipe

Abstract

The utility model discloses a multipurpose 3PE anti-corrosion steel pipe, and relates to the technical field of anti-corrosion steel pipes, the multipurpose 3PE anti-corrosion steel pipe comprises a pipe body and further comprises a first splicing head, the first splicing head is fixed at one end of the pipe body and comprises a first joint main body, and a groove is formed in the inner side of the first joint main body; the second splicing head is fixed to the other end of the pipe body and comprises a second connector body, a connecting plug is fixedly connected to the inner side of the second connector body, the size of the connecting plug is matched with that of the groove, and the inner diameter of the connecting plug is the same as that of the pipe body; a plurality of connectors are fixedly arranged at the outer end of the first connector body and the outer end of the second connector body in a surrounding mode. The splicing joint I and the splicing joint II are arranged, during installation, quick splicing and sealing connection of multiple sections of steel pipes can be realized through splicing matching, welding is not needed, the installation efficiency is high, a joint path with a multi-bending structure is formed on a matching surface, the penetration resistance can be improved, and the sealing performance is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anticorrosive steel pipes, in particular to a multipurpose 3PE anticorrosive steel pipe. BACKGROUND

[0002] 3PE anticorrosive steel pipe is a kind of pipeline material applied in corrosive environment, and its core structure is composed of steel pipe body and outer three-layer protection system: inner layer is epoxy powder coating, builds chemical anticorrosion barrier;Middle layer is adhesive layer, enhances the adhesion of epoxy powder layer and outer layer;Outer layer is polyethylene layer, provides physical wear-resistant impact protection. The structure has mechanical strength of steel and corrosion resistance of plastic, and is widely used in buried or open pipeline conveying system in petroleum, natural gas, chemical industry and other fields.

[0003] Traditional connection mode is mostly welding or flange connection, the former needs high-temperature welding on site, needs to damage anticorrosive coating at joint, and splicing time is long;The latter sealing structure is mostly plane rubber pad or single sealing ring, can only provide simple end face sealing, and sealing reliability is not high enough. Therefore, the utility model provides a kind of multipurpose 3PE anticorrosive steel pipe. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of multipurpose 3PE anticorrosive steel pipe, with high installation efficiency, strong sealing performance, to solve the problem of long time of 3PE anticorrosive steel pipe welding splicing, flange connection sealing is not high enough.

[0005] To realize efficient installation and strong sealing purposes, the utility model provides the following technical scheme: a kind of multipurpose 3PE anticorrosive steel pipe, including pipe body, further comprising:

[0006] Splicing head one, the splicing head one is fixed in one end of pipe body, including joint main body one, recess is set in the inside of joint main body one;

[0007] Splicing head two, the splicing head two is fixed in the other end of pipe body, including joint main body two, the inside of joint main body two is fixedly connected with spigot, the size of spigot is matched with recess, and inner diameter is same with pipe body;

[0008] The outer end of joint main body one and joint main body two is all surrounded and fixedly set with multiple connecting heads.

[0009] As a preferred technical scheme of the utility model, the outer end surface of joint main body one is fixedly embedded with sealing washer, the outer end surface of joint main body two is provided with matching groove, and the matching groove is used to cooperate with sealing washer when splicing head two and splicing head one are docked.

[0010] As a preferred technical scheme of the utility model, the recess and the joint main body one are provided with inclined surfaces at the corner, the outer edge of the plug-in joint is provided with an inclined surface, and the joint surface of the joint main body two is also provided with an inclined surface.

[0011] As a preferred technical scheme of the utility model, the slopes of the plurality of inclined surfaces are the same, and the plurality of inclined surfaces are closely matched when the joint main body one and the joint main body two are spliced.

[0012] As a preferred technical scheme of the utility model, when the two pipe bodies are butted, the joint main body one and the joint main body two are mutually plugged and matched, the corresponding connecting head one is aligned, and is fixed through bolt connection.

[0013] As a preferred technical scheme of the utility model, the pipe body comprises a steel pipe main body, the outer surface of the steel pipe main body is provided with an epoxy powder coating layer, the outer surface of the epoxy powder coating layer is provided with an adhesive layer, and the outer surface of the adhesive layer is provided with a polyethylene layer.

[0014] As a preferred technical scheme of the utility model, the steel pipe main body, the joint main body one and the joint main body two are integrally formed.

[0015] Compared with the prior art, the utility model provides a multipurpose 3PE anti-corrosion steel pipe, which has the following beneficial effects:

[0016] 1、the multipurpose 3PE anti-corrosion steel pipe is provided with joint main body one and joint main body two, so that when installing, the joint main body one and the joint main body two are plugged and matched, the quick splicing and sealed connection of the multiple steel pipes can be realized, welding is not needed, and the installation efficiency is high.

[0017] 2、the multipurpose 3PE anti-corrosion steel pipe, the matching surface between the joint main body one and the joint main body two forms a joint path with multiple bending structures, the leakage path length is longer than that of the traditional plane sealing, the anti-permeability can be remarkably improved, and the sealing performance is strong. ACCURACY OF DRAWINGS

[0018] Figure 1 The utility model provides a whole structure schematic view of a multipurpose 3PE anti-corrosion steel pipe;

[0019] Figure 2 The utility model provides a structure schematic view of joint main body one in a multipurpose 3PE anti-corrosion steel pipe;

[0020] Figure 3 The utility model provides a structure schematic view of joint main body two in a multipurpose 3PE anti-corrosion steel pipe;

[0021] Figure 4The utility model provides a double pipe installation structure diagram of multipurpose 3PE anticorrosive steel pipe.

[0022] Figure 5 The utility model provides a double pipe installation structure sectional view of multipurpose 3PE anticorrosive steel pipe.

[0023] Figure 6 For Figure 5 The enlarged view of A in the middle.

[0024] In the figure: 1, pipe body;11, steel pipe main body;12, epoxy powder coating;13, adhesive layer;14, polyethylene layer;2, splice head one;21, joint main body one;22, recess;23, sealing washer;3, splice head two;31, joint main body two;32, plug-in head;33, matching groove;4, connecting head;5, bolt. Specific implementation

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] Please refer to Figures 1-6 The utility model discloses a multipurpose 3PE anticorrosive steel pipe, including pipe body 1), still including:

[0027] Splice head one 2) is fixed in one end of pipe body 1, and includes joint main body one 21, and the inside of joint main body one 21 is provided with recess 22.Splice head two 3, splice head two 3 is fixed in the other end of pipe body 1, and includes joint main body two 31, and the inside of joint main body two 31 is fixedly connected with plug-in head 32, and the size of plug-in head 32 is matched with recess 22, and the inner diameter is same with pipe body 1.

[0028] Specifically, pipe body 1 is hollow tubular structure, and the two ends are fixedly connected with splice head one 2 and splice head two 3 respectively, and when installing, the plug-in cooperation between splice head one 2 and splice head two 3 realizes the quick splicing and sealing connection of multiple steel pipes, simultaneously, the cooperation surface between splice head one 2 and splice head two 3 forms the joint path with multiple bending structures, and the leakage path length is longer than traditional plane sealing, significantly improves the anti-permeation capacity, and the sealing performance is strong.

[0029] Among them, pipe body 1 includes steel pipe main body 11, the outer surface of steel pipe main body 11 is provided with epoxy powder coating 12, the outer surface of epoxy powder coating 12 is provided with adhesive layer 13, and the outer surface of adhesive layer 13 is provided with polyethylene layer 14.

[0030] Specifically, the epoxy powder coating 12 is directly attached to the outer surface of the steel pipe body 11 to form a dense chemical anticorrosion barrier, the adhesive layer 13 serves as an intermediate transition layer to ensure the adhesion between the three layers and avoid interlayer peeling, and the polyethylene layer 14 serves as a physical protection layer to resist mechanical damage of the internal coating by external hard objects such as soil particles and rocks due to high wear resistance and impact resistance.

[0031] In the embodiment, the outer end of the joint body one 21 and the joint body two 31 is fixedly provided with a plurality of connecting heads 4.

[0032] When the two pipe bodies 1 are butted, the splicing head one 2 and the splicing head two 3 are inserted and matched with each other, the corresponding connecting heads 4 are aligned one by one, and are connected and fixed through the bolts 5.

[0033] Specifically, the plurality of connecting heads 4 arranged around facilitate the subsequent installation of the fixing member to the joint body one 21 and the joint body two 31.

[0034] As an embodiment of the utility model, after being installed and fixed by the bolt, a heat-shrinkable sleeve can be wrapped outside the joint body one 21 and the joint body two 31, so as to protect the splicing part of the pipeline and prevent the splicing part from being corroded.

[0035] In the embodiment, the outer end surface of the joint body one 21 is fixedly embedded with a sealing gasket 23, and the outer end surface of the joint body two 31 is provided with a matching groove 33, which is used for cooperating with the sealing gasket 23 when the splicing head two 3 and the splicing head one 2 are butted.

[0036] Specifically, when butted, the sealing gasket 23 is embedded in the matching groove 33 and elastically deformed under the fastening force of the bolt 5, tightly fills the gap between the splicing surfaces, and forms a physical barrier to prevent medium leakage.

[0037] In the embodiment, the angle between the groove 22 and the joint body one 21 is provided with a slope, the outer edge of the insertion head 32 is provided as a slope, and the joint between the joint body two 31 is also provided as a slope.

[0038] The slopes of the plurality of slopes have the same slope, and the plurality of slopes are tightly matched when the splicing head one 2 and the splicing head two 3 are spliced.

[0039] Specifically, the groove 22 and the edge and the joint between the insertion head 32 are provided with the same slope, forming a taper matching structure. In the insertion process, the guiding effect of the slope reduces the alignment difficulty, allows a certain range of installation deviation, and can improve the on-site construction efficiency.

[0040] In the embodiment, the steel pipe body 11, the joint body one 21 and the joint body two 31 are integrally formed.

[0041] Specifically, the steel pipe body 11, the joint body one 21 and the joint body two 31 are integrally formed, high in strength, free of welds and capable of avoiding corrosion hidden dangers at joints.

[0042] The working principle and use process of the utility model are as follows: in use, the groove 22 of the splice one 2 and the edge of the plug-in head 32 of the splice two 3 are both provided with same slope inclined surfaces, forming a conical surface cooperation structure.

[0043] The outer diameter of the plug-in head 32 is adapted to the inner diameter of the groove 22, and the inner diameters of both are consistent with the pipe body 1, forming axial limiting after insertion, ensuring coaxial connection of the two steel pipes.

[0044] It should be noted that in this document, such terms as "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that includes a list of elements not only includes those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0045] Although embodiments of the utility model have been shown and described, it will be understood by those having ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A multipurpose 3PE anticorrosive steel pipe comprising a pipe body (1), characterized in that, Also include: Splice joint one (2), the splice joint one (2) is fixed in the pipe body (1) one end, including joint body one (21), the inside of the joint body one (21) is provided with a groove (22); Splice joint two (3), the splice joint two (3) is fixed in the pipe body (1) the other end, including joint body two (31), the inside of the joint body two (31) is fixedly connected with the plug (32), the size of the plug (32) is matched with the groove (22), and the inner diameter is same with the pipe body (1); The outer end of the joint body one (21) and joint body two (31) is fixedly provided with a plurality of connecting heads (4).

2. A multipurpose 3PE anticorrosive steel pipe according to claim 1, characterized in that: The outer end surface of the joint body one (21) is fixedly embedded with a sealing washer (23), and the outer end surface of the joint body two (31) is provided with a matching groove (33), the matching groove (33) is used for cooperating with the sealing washer (23) when the splice joint two (3) and the splice joint one (2) are butted.

3. A multipurpose 3PE anticorrosive steel pipe according to claim 2, characterized in that: The corner between the groove (22) and the joint body one (21) is provided with a slope, the outer edge of the plug (32) is provided as a slope, and the joint between the joint body two (31) is also provided as a slope.

4. The multipurpose 3PE anticorrosive steel pipe according to claim 3, characterized in that: The slope of a plurality of the slopes is same, the splice joint one (2) and the splice joint two (3) are spliced, and a plurality of slopes are closely matched.

5. The multipurpose 3PE anticorrosive steel pipe according to claim 1, characterized in that: When two pipe bodies (1) are butted, the splice joint one (2) and the splice joint two (3) are mutually inserted and matched, and the corresponding connecting heads (4) are aligned one by one, and are connected and fixed by bolts (5).

6. The multipurpose 3PE anticorrosive steel pipe according to claim 1, characterized in that: The pipe body (1) includes a steel pipe body (11), the outer surface of the steel pipe body (11) is provided with an epoxy powder coating (12), the outer surface of the epoxy powder coating (12) is provided with an adhesive layer (13), and the outer surface of the adhesive layer (13) is provided with a polyethylene layer (14).

7. A multipurpose 3PE anticorrosive steel pipe according to claim 6, characterized in that: The steel pipe body (11) and the joint body one (21) and the joint body two (31) are integrally formed.

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