Large-diameter HDPE pipeline protection device

Abstract

The utility model discloses a large-diameter HDPE pipeline protection device which comprises a plurality of base components and a plurality of top base components, each base component comprises a base, the bases are sequentially arranged under a pipeline in the length direction of the pipeline, each base is provided with a containing groove, and the containing grooves are formed in the top base components. The upper surface and the two ends of each containing groove are open, and every two adjacent containing grooves are communicated end to end to form a first channel for containing a pipeline. Each top seat component comprises a top seat, and the top seats are sequentially arranged over the pipeline in the length direction of the pipeline and detachably connected with the bases in a one-to-one correspondence mode. The large-diameter HDPE pipeline protection device has the advantages that the large-diameter HDPE pipeline protection device can protect the pipeline, solves the problem of pressure prevention of the HDPE pipeline under the condition of high filling soil in a coast area, and has the advantages of being small in construction difficulty, short in construction period and low in construction cost.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering structures, in particular to a large-diameter HDPE pipeline protection device. Background Art

[0002] As an alternative to traditional steel pipes and polyvinyl chloride (PVC) drainage pipes, HDPE (High Density Polyethylene) pipes have been widely used in offshore structures in recent years due to their inherent low specific gravity and excellent flexibility. With the increasing scale of industrial plants in recent years, offshore pipelines have become larger in diameter. Coastal water intake and drainage projects often face dramatic terrain changes nearshore, with steep rock formations. The terrain behind the water intake and drainage plants is generally higher. This terrain causes the nearshore HDPE pipes to be covered by high fill. Although the pipe strength meets the requirements, excessive pipe deformation necessitates additional protective measures to minimize deformation and meet the requirements of pigging system maintenance during subsequent operations.

[0003] Conventional HDPE pipe protection methods in China and abroad generally fall into four categories: steel casing protection, shield support, cast-in-place reinforced concrete box culverts (dry-site construction), and prefabricated reinforced concrete box culverts (overwater installation). Steel casing solutions (such as the direct-buried, road-crossing thermal pipeline protection device disclosed in Application No. 202220066465.7) can be prefabricated and transported to site, but their durability is poor, requiring additional anti-corrosion measures. Furthermore, the construction of HDPE pipes passing through steel casings is generally very difficult on-site. Shield support solutions, due to their high engineering costs and small project volume, result in a very high unit price and require cofferdam construction. Cast-in-place reinforced concrete box culverts, as a conventional protection device, offer strong stability and durability, but they cannot fully utilize the properties of reinforced concrete in nearshore high-fill areas. Furthermore, the device also requires cofferdam construction for dry-site construction, resulting in additional construction costs. Consequently, existing HDPE pipe protection structures present significant construction difficulties, long construction periods, and high project costs. Utility Model Content

[0004] The purpose of this utility model is to overcome the above technical deficiencies and propose a large-diameter HDPE pipe protection device to solve the technical problems in the existing technology of protecting HDPE pipes, such as high construction difficulty, long construction period and high engineering cost.

[0005] To achieve the above technical objectives, the technical solution of the present utility model provides a large diameter HDPE pipe protection device, comprising:

[0006] A plurality of base components, each comprising a base, each of the bases being sequentially arranged directly below the pipeline along the length direction of the pipeline, each of the bases having a placement slot, the upper surface and both ends of the placement slot being open, and adjacent placement slots being connected end to end to form a first channel for placement of the pipeline;

[0007] Multiple top seat components each include a top seat, each of which is sequentially arranged directly above the pipeline along the length direction of the pipeline and is detachably connected to each of the bases one by one. The top seat and the base together form a storage space for accommodating and protecting the pipeline.

[0008] Furthermore, each of the top seats has a covering groove, the lower surface and both ends of the covering groove are opened, and the adjacent covering grooves are connected end to end to form a second channel for placing the pipeline, and the covering groove and the placement groove together form the accommodating space.

[0009] Furthermore, the longitudinal section of the placement groove is a semicircular structure, and the diameter of the placement groove is equal to the diameter of the pipeline.

[0010] Furthermore, the longitudinal section of the covering groove is a semicircular structure, and the diameter of the covering groove is equal to the diameter of the pipe.

[0011] Furthermore, the base component also includes a lower gasket, which is a semi-annular structure and is arranged on the groove wall of the placement groove.

[0012] Furthermore, the seat component also includes an upper gasket, which is a semi-annular structure and is arranged on the groove wall of the covering groove.

[0013] Furthermore, the large-diameter HDPE pipe protection device also includes a plurality of connection components, and the two ends of each connection component are detachably connected to the corresponding base and top seat.

[0014] Furthermore, the connecting assembly includes a plurality of connecting members, the lower end of each connecting member is detachably connected to the base, and the upper end of each connecting member is detachably connected to the top seat.

[0015] Furthermore, each of the connecting parts includes a bolt, a lower nut and an upper nut. A plurality of first mounting holes are provided on the base, and a plurality of second mounting holes are provided on the top seat. When the top seat is placed on the base, each of the second mounting holes is connected to each of the first mounting holes in a one-to-one correspondence to form a plurality of mounting channels. Each of the bolts passes through the corresponding mounting channels respectively. The lower nut is arranged below the base and sleeved on the bolt. The lower nut is screwed to the bolt. The upper nut is arranged above the top seat and sleeved on the bolt. The upper nut is screwed to the bolt. The lower nut and the upper nut jointly clamp the base and the top seat.

[0016] Furthermore, each of the connecting parts also includes a lower washer, an upper washer and a spring washer. The lower washer is arranged between the base and the lower nut and is sleeved on the bolt. The upper washer is arranged between the top seat and the upper nut and is sleeved on the bolt. The spring washer is arranged between the lower nut and the lower washer and is sleeved on the bolt.

[0017] Compared with the prior art, the beneficial effects of the present invention include: during construction, the protection device is prefabricated, transported, and installed in the open sea simultaneously with the HDPE pipeline. First, each base is arranged in sequence along the length direction of the pipeline, and then the pipeline is placed in the first channel. Finally, each top seat is arranged in sequence along the length direction of the pipeline directly above the pipeline, and is detachably connected to each base one by one. The top seat can be combined with the base to form an accommodating space for accommodating and protecting the pipeline, thereby protecting the pipeline. This large-diameter HDPE pipeline protection device can protect the pipeline, solve the problem of HDPE pipeline pressure resistance under high fill conditions in coastal areas, and has the advantages of less construction difficulty, shorter construction period, and lower project cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a large-diameter HDPE pipe protection device provided by the utility model;

[0019] Figure 2 yes Figure 1 A side view of a large diameter HDPE pipe protection device;

[0020] Figure 3 yes Figure 1 Structural diagram of the connector in FIG.

[0021] Figure 4 yes Figure 3 A top view of the connector in FIG.

[0022] Figure 5 yes Figure 3A top view of the upper steel plate in FIG;

[0023] Figure 6 yes Figure 5 Side view of the upper steel plate in FIG;

[0024] Figure 7 yes Figure 5 A front view of the upper steel plate in FIG;

[0025] Figure 8 yes Figure 1 A structural diagram of the connection relationship between the first lifting ring and the first mounting steel plate;

[0026] In the figure: 100 - base component, 110 - base, 111 - placement groove, 112 - first mounting hole, 113 - first groove, 114 - first filling hole, 120 - lower gasket, 130 - first lifting ring, 140 - first mounting steel plate, 200 - top seat component, 210 - top seat, 211 - covering groove, 212 - second mounting hole, 213 - second groove, 214 - second filling hole, 220 - upper gasket, 230 - second lifting ring, 240 - second mounting steel plate, 300 - connecting assembly, 310 - connecting piece, 311 - bolt, 312 - lower nut, 313 - upper nut, 314 - lower washer, 315 - upper washer, 316 - spring washer, 317 - sleeve, 318 - lower steel plate, 319 - upper steel plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The utility model provides a large diameter HDPE pipe protection device, the structure of which is as follows Figure 1 - Figure 2 As shown, it includes multiple base components 100 and multiple top seat components 200, each of the base components 100 includes a base 110, each of the bases 110 is sequentially arranged directly below the pipeline along the length direction of the pipeline, each of the bases 110 has a placement groove 111, the upper surface and both ends of the placement groove 111 are open, and the adjacent placement grooves 111 are connected end to end to form a first channel for placing the pipeline; each of the top seat components 200 includes a top seat 210, each of the top seats 210 is sequentially arranged directly above the pipeline along the length direction of the pipeline, and is detachably connected to each of the bases 110 one by one, and the top seat 210 and the base 110 together form a accommodating space for accommodating and protecting the pipeline.

[0029] During construction, the protection device is prefabricated, transported and installed in the open sea simultaneously with the HDPE pipeline. First, each base 110 is arranged in sequence along the length direction of the pipeline, and then the pipeline is placed in the first channel. Finally, each top seat 210 is arranged in sequence along the length direction of the pipeline just above the pipeline, and is detachably connected to each base 110 in a one-to-one correspondence. The top seat 210 can be enclosed with the base 110 to form the accommodating space for accommodating and protecting the pipeline, thereby protecting the pipeline and solving the anti-pressure problem of HDPE pipelines under high fill conditions in coastal areas. By changing the normal The structural form of the standardized HDPE pipe protection device optimizes the HDPE pipe construction process, that is, the protection device and the HDPE pipe are prefabricated, transported and installed in the open sea at the same time, and the inflatable capsule construction measures are used to assist. Through precise positioning, the pipe is gradually sunk by water injection, and the protection device is accurately installed with the pipe to the specified position in the foundation trench, shortening the construction period and thus reducing the project cost. This large-diameter HDPE pipe protection device can protect the pipeline, solve the problem of HDPE pipe pressure resistance under high fill conditions in coastal areas, and has the advantages of less construction difficulty, shorter construction period and lower project cost.

[0030] As a preferred embodiment, please refer to Figure 1 Each of the top seats 210 has a covering groove 211, the lower surface and both ends of the covering groove 211 are open, and the adjacent covering grooves 211 are connected end to end to form a second channel for placing the pipeline. The covering groove 211 and the placement groove 111 together form the accommodating space, so that the top seat 210 can protect the upper part of the pipeline, and the base 110 can protect the lower part of the pipeline. This structure can effectively resist the covering pressure and shear force of the fill with a higher height on the upper part to protect large-diameter HDPE pipelines.

[0031] As a preferred embodiment, please refer to Figure 1 The longitudinal section of the placement groove 111 is a semicircular structure, and the diameter of the placement groove 111 is equal to the diameter of the pipeline, so that the groove wall of the placement groove 111 can abut against the outer wall of the pipeline.

[0032] As a preferred embodiment, please refer to Figure 1 The bottom surface of the base 110 is flat, which has a good supporting effect.

[0033] As a preferred embodiment, please refer to Figure 1 The longitudinal section of the covering groove 211 is a semicircular structure, and the diameter of the covering groove 211 is equal to the diameter of the pipe, so that the groove wall of the covering groove 211 can abut against the outer wall of the pipe.

[0034] As a preferred embodiment, please refer to Figure 1 The top surface of the top seat 210 is an arc surface, which can effectively resist the covering pressure of the backfill with a higher height above.

[0035] As a preferred embodiment, the base 110 and the top seat 210 are both prefabricated reinforced concrete structures.

[0036] As a preferred embodiment, please refer to Figure 1 The base member 100 also includes a lower gasket 120. The lower gasket 120 is a semi-annular structure and is arranged on the groove wall of the placement groove 111. The lower gasket 120 is used to achieve a buffer connection with the HDPE pipe. It provides friction during the installation and construction period of the base 110 to prevent the base 110 from slipping during the installation and construction period. It provides a buffer during use to prevent the HDPE pipe from unevenly deforming and causing local stress concentration, thereby protecting the HDPE pipe from damage caused by local uneven deformation.

[0037] As a preferred embodiment, please refer to Figure 1 The top seat component 200 also includes an upper gasket 220. The upper gasket 220 is a semi-annular structure and is arranged on the groove wall of the covering groove 211. The upper gasket 220 is used to achieve a buffer connection with the HDPE pipe. It provides friction during the installation and construction period of the top seat 210 to prevent the top seat 210 from slipping during the installation and construction period. It provides buffering during use to prevent the HDPE pipe from uneven deformation and thus causing local stress concentration, thereby protecting the HDPE pipe from damage caused by local uneven deformation.

[0038] As a preferred embodiment, please refer to Figure 1 and Figure 2 The large-diameter HDPE pipe protection device also includes a plurality of connecting components 300, and the two ends of each connecting component 300 are detachably connected to the corresponding base 110 and the top seat 210, so that the corresponding base 110 and the top seat 210 form a whole, thereby improving the connection strength.

[0039] As a preferred embodiment, please refer to Figure 1 and Figure 2 The connecting assembly 300 includes a plurality of connecting members 310, the lower end of each connecting member 310 is detachably connected to the base 110, and the upper end of each connecting member 310 is detachably connected to the top seat 210, thereby improving the connection strength.

[0040] As a preferred embodiment, please refer to Figure 3Each of the connecting members 310 includes a bolt 311, a lower nut 312, and an upper nut 313. The base 110 is provided with a plurality of first mounting holes 112, and the top seat 210 is provided with a plurality of second mounting holes 212. When the top seat 210 is placed on the base 110, each of the second mounting holes 212 is connected to each of the first mounting holes 112 in a one-to-one correspondence to form a plurality of mounting channels. Each of the bolts 311 passes through the corresponding mounting channels, and the lower nut 312 is provided with a plurality of second mounting holes 212. The nut 312 is provided below the base 110 and is sleeved on the bolt 311. The lower nut 312 is screwed to the bolt 311. The upper nut 313 is provided above the top seat 210 and is sleeved on the bolt 311. The upper nut 313 is screwed to the bolt 311. The lower nut 312 and the upper nut 313 jointly clamp the base 110 and the top seat 210, so that the corresponding base 110 and the top seat 210 form a whole.

[0041] As a preferred embodiment, please refer to Figure 3 There are two lower nuts 312, which are double nuts, and there are two upper nuts 313, which are double nuts.

[0042] As a preferred embodiment, please refer to Figure 3 Each of the connecting members 310 also includes a lower washer 314, an upper washer 315 and a spring washer 316. The lower washer 314 is arranged between the base 110 and the lower nut 312, and is sleeved on the bolt 311. The upper washer 315 is arranged between the top seat 210 and the upper nut 313, and is sleeved on the bolt 311. The spring washer 316 is arranged between the lower nut 312 and the lower washer 314, and is sleeved on the bolt 311 to absorb and disperse vibration and protect the bolt 311 from damage. The spring washer 316 increases the friction between the lower nut 312 and the bolt 311, thereby preventing the bolt 311 from loosening or vibrating during the installation and operation of the base 110 and the top seat 210.

[0043] As a preferred embodiment, please refer to Figure 3 Each of the connecting parts 310 also includes a sleeve 317, each of the sleeves 317 is respectively arranged in the corresponding installation channel, and each of the bolts 311 slides through the corresponding sleeve 317. The length of the sleeve 317 is equal to the length of the installation channel, which can reduce the difficulty of docking the bolts 311 with the installation channel during construction and reduce the construction accuracy requirements. At the same time, the base 110 and the top seat 210 are protected to avoid local stress concentration.

[0044] As a preferred embodiment, please refer to Figure 3 and Figure 4 Each of the connecting parts 310 also includes two lower steel plates 318 and two upper steel plates 319. The two lower steel plates 318 are buried in the base 110 from top to bottom, and the two lower steel plates 318 are each provided with a first through hole, and the two first through holes are coaxial with the first mounting hole 112. The two upper steel plates 319 are buried in the top seat 210 from bottom to top, and the two upper steel plates 319 are each provided with a second through hole, and the two second through holes are coaxial with the second mounting hole 212, thereby strengthening the connection strength between the bolt 311 and the base 110 and the top seat 210.

[0045] As a preferred embodiment, please refer to Figure 6 and Figure 7 The two lower steel plates 318 are pre-embedded with steel bars by plug welding, and the two upper steel plates 319 are pre-embedded with steel bars by plug welding, thereby forming a reliable connection point, which can strengthen the integrity of the connection between the bolt 311 and the base 110 and the top seat 210, and effectively transfer the load on the bolt 311 to the base 110 and the top seat 210, thereby increasing the shear resistance of the bolt 311.

[0046] As a preferred embodiment, please refer to Figure 1 and Figure 2 A plurality of first grooves 113 are provided on the base 110 , and each first groove 113 corresponds one-to-one to each first mounting hole 112 . The lower end of each bolt 311 is located in the corresponding first groove 113 , so that the lower washer 314 abuts against the top surface of the first groove 113 .

[0047] As a preferred embodiment, please refer to Figure 1 and Figure 2 A plurality of second grooves 213 are provided on the top seat 210 , and each second groove 213 corresponds one-to-one to each second mounting hole 212 . The upper end of each bolt 311 is located in the corresponding second groove 213 , so that the upper washer 315 can abut against the bottom surface of the second groove 213 .

[0048] As a preferred embodiment, please refer to Figure 1 The base 110 further has two first filling holes 114 , and the adjacent first filling holes 114 are connected end to end to form a first filling channel, and the two first filling channels are used to introduce liquids such as chlorine and sulfuric acid.

[0049] As a preferred embodiment, please refer to Figure 1The top seat 210 further has two second filling holes 214 , and the adjacent second filling holes 214 are connected end to end to form a second filling channel, and the two second filling channels are used to introduce liquids such as chlorine and sulfuric acid.

[0050] As a preferred embodiment, please refer to Figure 1 and Figure 2 The base component 100 further includes two first hanging rings 130 , which are relatively fixed on both sides of the base 110 , making it easy to install the base 110 by lifting.

[0051] As a preferred embodiment, please refer to Figure 1 and Figure 8 The base component 100 also includes two first mounting steel plates 140. The two first mounting steel plates 140 are relatively arranged on both sides of the base 110 and are buried in the base 110. The two first lifting rings 130 are respectively fixed to the two first mounting steel plates 140, which can ensure the integrity of the first lifting ring 130 and the base 110 during the lifting process.

[0052] As a preferred embodiment, please refer to Figure 1 The top seat component 200 further includes two second lifting rings 230 , which are relatively fixed on both sides of the top seat 210 , making it easy to install the top seat 210 by lifting.

[0053] As a preferred embodiment, please refer to Figure 1 The top seat component 200 also includes two second mounting steel plates 240. The two second mounting steel plates 240 are relatively arranged on both sides of the top seat 210 and are both buried in the top seat 210. The two second lifting rings 230 are respectively fixed to the two second mounting steel plates 240, which can ensure the integrity of the second lifting rings 230 and the top seat 210 during the lifting process.

[0054] In order to better understand the present invention, the following Figure 1 - Figure 8 The working principle of the technical solution of the utility model is described in detail:

[0055] During construction, the protection device is prefabricated, transported and installed in the open sea simultaneously with the HDPE pipeline. First, each base 110 is arranged in sequence along the length direction of the pipeline, and then the pipeline is placed in the first channel. Finally, each top seat 210 is arranged in sequence directly above the pipeline along the length direction of the pipeline. The top seat 210 can be combined with the base 110 to form the accommodating space for accommodating and protecting the pipeline. Each bolt 311 is passed through the corresponding installation channel, and the lower nut 312 and the upper nut 313 are tightened. The base 110 and the top seat 210 are clamped together by the lower nut 312 and the upper nut 313, so that the corresponding base 110 and the top seat 210 are formed. The HDPE pipes are then placed in a protective container, which allows them to be placed in a central location, allowing them to be transported and connected to the pipes as they are needed for transport.

[0056] The large diameter HDPE pipe protection device provided by the utility model has the following beneficial effects:

[0057] (1) The two ends of each connecting assembly 300 are detachably connected to the corresponding base 110 and the top seat 210, so that the corresponding base 110 and the top seat 210 form a whole, thereby improving the connection strength. The provision of the sleeve 317 can reduce the difficulty of docking the bolt 311 with the installation channel during the construction period, reduce the construction accuracy requirements, and at the same time protect the base 110 and the top seat 210 to avoid local stress concentration;

[0058] (2) By changing the structural form of the conventional HDPE pipeline protection device, the HDPE pipeline construction process was optimized. That is, the protection device and the HDPE pipeline were simultaneously prefabricated, transported, and installed in the open sea. The inflatable capsule construction method was used to assist. Through precise positioning, the pipeline was gradually sunk by water injection. The protection device was accurately installed with the pipeline to the designated position in the base trench, shortening the construction period and thus reducing the project cost.

[0059] (3) This large-diameter HDPE pipe protection device can protect the pipeline, solving the problem of HDPE pipe pressure resistance under high fill conditions in coastal areas, and has the advantages of less construction difficulty, shorter construction period and lower project cost.

[0060] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A large diameter HDPE pipe protection device, characterized in that: include: A plurality of base components, each comprising a base, each of the bases being sequentially arranged directly below the pipeline along the length direction of the pipeline, each of the bases having a placement slot, the upper surface and both ends of the placement slot being open, and adjacent placement slots being connected end to end to form a first channel for placement of the pipeline; Multiple top seat components each include a top seat, each of which is sequentially arranged directly above the pipeline along the length direction of the pipeline and is detachably connected to each of the bases one by one. The top seat and the base together form a storage space for accommodating and protecting the pipeline.

2. The large diameter HDPE pipe protection device according to claim 1, characterized in that: Each of the top seats has a covering groove, the lower surface and both ends of the covering groove are open, and the adjacent covering grooves are connected end to end to form a second channel for placing the pipeline. The covering groove and the placement groove together form the accommodating space.

3. The large diameter HDPE pipe protection device according to claim 1, characterized in that: The longitudinal section of the placement groove is a semicircular structure, and the diameter of the placement groove is equal to the diameter of the pipeline.

4. The large diameter HDPE pipe protection device according to claim 2, characterized in that: The longitudinal section of the covering groove is a semicircular structure, and the diameter of the covering groove is equal to the diameter of the pipeline.

5. The large diameter HDPE pipe protection device according to claim 3, characterized in that: The base component further includes a lower gasket which is a semi-annular structure and is arranged on the groove wall of the placement groove.

6. The large diameter HDPE pipe protection device according to claim 4, characterized in that: The top seat component also includes an upper gasket, which is a semi-annular structure and is arranged on the groove wall of the covering groove.

7. The large diameter HDPE pipe protection device according to claim 1, characterized in that: It also includes a plurality of connecting components, and the two ends of each connecting component are detachably connected to the corresponding base and the top seat.

8. The large diameter HDPE pipe protection device according to claim 7, characterized in that: The connecting assembly includes a plurality of connecting members, the lower end of each connecting member is detachably connected to the base, and the upper end of each connecting member is detachably connected to the top seat.

9. The large diameter HDPE pipe protection device according to claim 8, characterized in that: Each of the connecting parts includes a bolt, a lower nut and an upper nut. A plurality of first mounting holes are provided on the base, and a plurality of second mounting holes are provided on the top seat. When the top seat is placed on the base, each of the second mounting holes is connected to each of the first mounting holes in a one-to-one correspondence to form a plurality of mounting channels. Each of the bolts passes through the corresponding mounting channels respectively. The lower nut is arranged below the base and sleeved on the bolt. The lower nut is screwed with the bolt. The upper nut is arranged above the top seat and sleeved on the bolt. The upper nut is screwed with the bolt. The lower nut and the upper nut jointly clamp the base and the top seat.

10. The large diameter HDPE pipe protection device according to claim 9, characterized in that: Each of the connecting parts also includes a lower washer, an upper washer and a spring washer. The lower washer is arranged between the base and the lower nut and is sleeved on the bolt. The upper washer is arranged between the top seat and the upper nut and is sleeved on the bolt. The spring washer is arranged between the lower nut and the lower washer and is sleeved on the bolt.

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