Buried high-pressure-resistant plastic composite pipe

Abstract

The buried high-pressure-resistant plastic composite pipe comprises a plurality of pipe bodies which are connected end to end, every two adjacent pipe bodies are connected through a plurality of sets of connecting pieces, each connecting piece comprises an arc-shaped holding plate and two mounting plates arranged at an opening of the arc-shaped holding plate, and the arc-shaped holding plates are matched with the outer walls of the pipe bodies in a limiting mode. A through hole is formed in the inner wall of the mounting plate, a threaded rod penetrates through the inner wall of the through hole, the outer wall of the threaded rod is in threaded connection with a fastening nut, and openings of all the arc-shaped holding plates are arranged in a staggered mode; the multiple arc-shaped holding plates are arranged, the threaded rods and the fastening nuts are matched to achieve mutual approaching of the two mounting plates, so that the tightness of pipe body connection is improved, disassembly is convenient, the convenience of later maintenance and replacement is improved, openings of the arc-shaped holding plates are arranged in a staggered mode, all-around holding of the pipe bodies can be achieved, and the pipe bodies can be conveniently disassembled. The sealing performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic composite pipe, especially to a buried high-pressure resistant plastic composite pipe. BACKGROUND

[0002] The plastic composite pipe is combined by multiple layers of materials, has high strength and rigidity, can withstand large internal pressure and external force, and is widely used in various fields such as chemical industry, construction, water conservancy, etc.

[0003] Through retrieval, the patent with the Chinese patent publication number CN214466729U discloses a pressure-resistant hole net steel belt plastic composite pipe, which comprises a body, the body comprises an inner pipe, a steel pipe and an outer pipe arranged in sequence from inside to outside, a heat preservation layer is arranged between the inner pipe and the outer pipe and located on both sides of the steel pipe, the surface of the steel pipe is uniformly provided with protrusions distributed in a spiral manner, the two sides of the inner pipe are provided with first fixing clamps extending into the steel pipe, the first fixing clamps are uniformly distributed on the inner pipe, and the included angle between adjacent first fixing clamps is 120 degrees.

[0004] The above-mentioned patent has the following disadvantages: when the two pipes are spliced, the plastic composite pipe still needs to be welded together by using the electric heating melting connection method, although this connection method is reliable, it is difficult to disassemble after connection, which brings inconvenience to the replacement and maintenance of the pipeline in the later period.

[0005] Therefore, a buried high-pressure resistant plastic composite pipe is provided. UTILITY MODEL CONTENTS

[0006] Therefore, the embodiments of the utility model hope to provide a buried high-pressure resistant plastic composite pipe to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial choice.

[0007] The technical scheme of the embodiments of the utility model is implemented as follows: a buried high-pressure resistant plastic composite pipe comprises a plurality of pipe bodies connected end to end, two adjacent pipe bodies are connected through a plurality of connecting pieces, the connecting piece comprises an arc-shaped clamping plate and two mounting plates arranged at the opening of the arc-shaped clamping plate, the arc-shaped clamping plate is limitedly matched with the outer wall of the pipe body, the inner wall of the mounting plate is provided with a through hole, a threaded rod penetrates through the inner wall of the through hole, and the outer wall of the threaded rod is connected with a fastening nut through threads.

[0008] In some embodiments, the openings of all the arc-shaped clamping plates are arranged in a staggered manner.

[0009] In some embodiments, the outer wall of the threaded rod is sleeved with a gasket one and a gasket two, the gasket one is located on the opposite side of the threaded rod and one of the mounting plates, and the gasket two is located on the opposite side of the fastening nut and the other mounting plate.

[0010] In some embodiments, the pipe body is provided with a hollow cylinder at one end, and an annular groove is formed at the other end of the pipe body and cooperates with the hollow cylinder.

[0011] In some embodiments, the outer wall of the hollow cylinder is provided with a plurality of limiting protrusions, and the inner wall of the annular groove is provided with a plurality of limiting grooves cooperating with the limiting protrusions.

[0012] In some embodiments, the inner wall of the annular groove is fixedly connected with a sealing ring, and the sealing ring is in contact with the end face of the hollow cylinder.

[0013] In some embodiments, the pipe body is composed of a first waterproof layer, a thermal insulation layer, a steel wire mesh and a second waterproof layer.

[0014] In some embodiments, the thermal insulation layer is bonded to the inner wall of the first waterproof layer, and the steel wire mesh is bonded to the opposite side of the thermal insulation layer and the second waterproof layer.

[0015] The embodiments of the utility model have the following advantages due to the adoption of the above technical scheme:

[0016] 1. A buried high-pressure-resistant plastic composite pipe, by setting multiple arc-shaped clamping plates, using the cooperation of threaded rods and nuts to realize the mutual approach of two mounting plates, thereby increasing the tightness of the pipe body connection, facilitating disassembly, improving the convenience of later maintenance and replacement, and the staggered arrangement of the arc-shaped clamping plate openings can realize overall clamping of the pipe body and improve the sealing performance.

[0017] 2. A buried high-pressure-resistant plastic composite pipe, by setting limiting protrusions and limiting grooves, using the mutual limiting of limiting protrusions and limiting grooves to increase the tightness of the connection between two pipe bodies, and cooperating with the sealing ring to further improve the overall sealing performance.

[0018] 3. A buried high-pressure-resistant plastic composite pipe, by setting a thermal insulation layer and a steel wire mesh, the steel wire mesh can enhance the overall strength of the composite pipe, thereby improving the high-pressure resistance, and the thermal insulation layer can play a thermal insulation role to avoid the influence of external temperature on the medium in the composite pipe.

[0019] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above-described illustrative aspects, embodiments and features, further aspects, embodiments and features of the utility model will be readily apparent from the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative effort on the basis of these drawings.

[0021] Figure 1 It is a front view structure diagram of the utility model;

[0022] Figure 2 It is a connecting piece structure exploded view of the utility model;

[0023] Figure 3 It is a hollow cylinder and annular groove structure schematic diagram of the utility model;

[0024] Figure 4 It is a pipe body sectional view of the utility model.

[0025] Reference signs:

[0026] 1, pipe body; 2, connecting piece; 3, arc-shaped clamping plate; 4, threaded rod; 5, gasket one; 6, mounting plate; 7, through hole; 8, gasket two; 9, fastening nut; 10, hollow cylinder; 11, limiting protrusion; 12, annular groove; 13, limiting groove; 14, sealing ring; 15, waterproof layer one; 16, thermal insulation layer; 17, steel wire mesh; 18, waterproof layer two. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are simply described. As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0028] In the utility model, unless explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] The embodiments of the utility model will be described in detail below in combination with the drawings.

[0030] Embodiment 1:

[0031] As shown in Figures 1-4 A kind of buried high-pressure plastic composite pipe, comprising multiple first and last pipe body 1.

[0032] Two adjacent pipe body 1 is connected by multiple groups of connecting pieces 2, connecting piece 2 includes arc-shaped clamping plate 3 and the two mounting plates 6 arranged at the opening of arc-shaped clamping plate 3, arc-shaped clamping plate 3 is limited to cooperate in the outer wall of pipe body 1, the inner wall of mounting plate 6 is provided with through hole 7, the inner wall of through hole 7 is penetrated by threaded rod 4, the outer wall of threaded rod 4 is connected by threaded nut 9, and the outer wall of threaded rod 4 is sleeved with gasket one 5 and gasket two 8, gasket one 5 is located on the opposite side of threaded rod 4 and one of mounting plate 6, gasket two 8 is located on the opposite side of threaded nut 9 and the other mounting plate 6, and the openings of all arc-shaped clamping plates 3 are arranged in staggered manner.

[0033] The openings of two pipe body 1 are aligned, arc-shaped clamping plate 3 is sleeved on the outer wall of pipe body 1, and the openings of all arc-shaped clamping plates 3 are arranged in staggered manner, to avoid leakage at the opening of arc-shaped clamping plate 3, then gasket one 5 is sleeved on the outer wall of threaded rod 4, threaded rod 4 is penetrated through two through holes 7, gasket two 8 is sleeved on the outer wall of threaded rod 4, and finally threaded nut 9 is tightened with threaded rod 4, so that the two mounting plates 6 are close to each other, and the two adjacent pipe body 1 is tightly connected.

[0034] By arranging multiple arc-shaped clamping plates 3, the mutual approach of the two mounting plates 6 is realized by the cooperation of threaded rod 4 and threaded nut 9, so as to increase the tightness of the connection of pipe body 1, facilitate disassembly, improve the convenience of later maintenance and replacement, and the staggered arrangement of the openings of arc-shaped clamping plate 3 can realize the overall clamping of pipe body 1 and improve the sealing performance.

[0035] In this embodiment, the pipe body 1 is provided with a hollow cylinder 10 at one end, and an annular groove 12 is formed at the other end of the pipe body 1, which cooperates with the hollow cylinder 10.

[0036] The outer wall of the hollow cylinder 10 is provided with a plurality of limiting protrusions 11, and the inner wall of the annular groove 12 is provided with a plurality of limiting grooves 13 which limit the limiting protrusions 11.

[0037] The inner wall of the annular groove 12 is fixedly connected with a sealing ring 14, and the sealing ring 14 is in contact with the end face of the hollow cylinder 10.

[0038] The hollow cylinder 10 of one of the pipe body 1 is inserted into the annular groove 12 of the other pipe body 1, so that the limiting protrusions 11 are located in the limiting grooves 13, and then the arc-shaped clamping plate 3 is sleeved on the outer wall of the pipe body 1 to connect the two pipe body 1.

[0039] By setting the limiting protrusion 11 and the limiting groove 13, the mutual limiting of the limiting protrusion 11 and the limiting groove 13 increases the tightness of the connection between the two pipe bodies 1, and the sealing ring 14 can further improve the overall sealing performance.

[0040] Example 2:

[0041] A buried high-pressure resistant plastic composite pipe, this embodiment is based on embodiment 1 with the following improvements, such as... Figure 4 As shown:

[0042] The pipe body 1 is composed of a waterproof layer 15, a heat insulation layer 16, a wire mesh 17 and a second waterproof layer 18. The heat insulation layer 16 is bonded to the inner wall of the waterproof layer 15, and the wire mesh 17 is bonded to the opposite side of the heat insulation layer 16 and the second waterproof layer 18.

[0043] Since the plastic composite pipe will be used in underground engineering and needs to be buried underground, the preferred material for waterproof layer 15 and waterproof layer 2 18 is polyethylene, which has good waterproof and corrosion resistance. Waterproof layer 15, insulation layer 16, wire mesh 17 and waterproof layer 2 18 are all bonded together with high-strength adhesive.

[0044] By setting the insulation layer 16 and the wire mesh 17, the wire mesh 17 can enhance the overall strength of the composite pipe, thereby improving its high pressure resistance. The insulation layer 16 can play a role in heat preservation, preventing the external temperature from affecting the medium inside the composite pipe.

[0045] Working principle: During the manufacturing process of pipe body 1, firstly, the wire mesh 17 is bonded to the outer wall of the second waterproof layer 18, then the insulation layer 16 is bonded to the outer wall of the wire mesh 17, and finally, the first waterproof layer 15 is bonded to the outer wall of the insulation layer 16. The first waterproof layer 15 and the second waterproof layer 18 have good waterproof and corrosion-resistant properties, and the wire mesh 17 enhances the strength of the plastic composite pipe and improves its high-pressure resistance. When connecting two pipe bodies 1, the sealing ring 14 is placed inside the annular groove 12, and then the hollow cylinder 10 of one of the pipe bodies 1... Insert the tube into the annular groove 12 of another tube 1, so that the limiting protrusion 11 is located in the limiting groove 13. Then, put the arc-shaped clamping plate 3 on the outer wall of the tube 1, and arrange all the openings of the arc-shaped clamping plate 3 in a staggered manner to avoid leakage at the openings of the arc-shaped clamping plate 3. Then, put the first gasket 5 on the outer wall of the threaded rod 4 and pass the threaded rod 4 through the two through holes 7. Then, put the second gasket 8 on the outer wall of the threaded rod 4. Finally, tighten the fastening nut 9 to the threaded rod 4 so that the two mounting plates 6 are close to each other and the two adjacent tubes 1 are tightly connected.

[0046] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be encompassed in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A high pressure resistant plastic composite pipe for burying, comprising a plurality of pipe bodies (1) connected end to end, characterized in that: Two adjacent pipe bodies (1) are connected through multiple groups of connecting elements (2), the connecting element (2) comprises an arc-shaped clamping plate (3) and two mounting plates (6) arranged at the opening of the arc-shaped clamping plate (3), the arc-shaped clamping plate (3) is limitingly matched with the outer wall of the pipe body (1), the inner wall of the mounting plate (6) is provided with a through hole (7), the inner wall of the through hole (7) is penetrated by a threaded rod (4), and the outer wall of the threaded rod (4) is connected with a fastening nut (9) through threads.

2. A high pressure resistant plastic composite pipe for buried use according to claim 1, characterized in that: All the arc-shaped clamping plates (3) are arranged in a staggered manner at the opening.

3. A high pressure resistant plastic composite pipe according to claim 1, characterized in that: The outer wall of the threaded rod (4) is sleeved with a gasket one (5) and a gasket two (8), the gasket one (5) is located on the opposite side of the threaded rod (4) and one of the mounting plates (6), and the gasket two (8) is located on the opposite side of the fastening nut (9) and the other mounting plate (6).

4. The buried high pressure plastic composite pipe according to claim 1, characterized in that: One end of the pipe body (1) is provided with a hollow cylinder (10), and the other end of the pipe body (1) is provided with an annular groove (12) matched with the hollow cylinder (10).

5. A high pressure resistant plastic composite pipe according to claim 4, characterized in that: The outer wall of the hollow cylinder (10) is provided with multiple limiting protrusions (11), and the inner wall of the annular groove (12) is provided with multiple limiting grooves (13) matched with the limiting protrusions (11).

6. A high pressure resistant plastic composite pipe according to claim 5, characterized in that: The inner wall of the annular groove (12) is fixedly connected with a sealing ring (14), and the sealing ring (14) is in contact with the end face of the hollow cylinder (10).

7. The buried high pressure plastic composite pipe according to claim 1, wherein: The pipe body (1) is composed of a waterproof layer one (15), a heat preservation layer (16), a steel wire mesh (17) and a waterproof layer two (18).

8. A high pressure resistant plastic composite pipe according to claim 7, characterized in that: The heat preservation layer (16) is bonded to the inner wall of the waterproof layer one (15), and the steel wire mesh (17) is bonded to the opposite side of the heat preservation layer (16) and the waterproof layer two (18).

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