CN212564706U - High water level mud flat area directly buries pipeline mounting structure - Google Patents
High water level mud flat area directly buries pipeline mounting structure Download PDFInfo
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- CN212564706U CN212564706U CN202021240729.3U CN202021240729U CN212564706U CN 212564706 U CN212564706 U CN 212564706U CN 202021240729 U CN202021240729 U CN 202021240729U CN 212564706 U CN212564706 U CN 212564706U
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Abstract
The utility model relates to a high water level beach area directly-buried pipeline mounting structure, which comprises a rectangular caisson without an upper cover, wherein two opposite side walls of the caisson are provided with one or more mounting ports for placing a directly-buried pipeline; the steel sleeve, the flexible filling material layer, the outer protective layer of the working pipe and the working pipe are sequentially arranged at the bottom of the mounting opening from outside to inside, the plugging steel plate is arranged above the steel sleeve in the mounting opening, and concrete is poured and filled in the caisson. The utility model discloses can prevent the pipeline come-up, the problem of intaking when solving the pipeline welding simultaneously.
Description
Technical Field
The utility model belongs to the directly buried pipeline counter weight field, concretely relates to high water level mud flat area directly buried pipeline mounting structure.
Background
When the thermal pipeline engineering is designed, the problem of laying the directly-buried pipeline in a high water level area or a special section such as a river beach area is often encountered, particularly when the river beach is laid, because the underground water level of the river beach is higher, the pipeline is laid below the water level, the laying position is closer to a river channel, the seepage of river water is faster, and the water cannot be drained in time when the pipeline is welded in construction; in addition, the problem of pipeline anti-floating when the pipeline is laid in the river beach needs to be solved, and a pipeline counterweight is designed.
At present, no instructive engineering method is provided in China to meet the laying design and construction of pipelines in high water level and low area.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high water level mud flat area directly buried pipeline mounting structure solves high water level mud flat area directly buried pipeline welding and sets up the pipeline counter weight problem, and the technical scheme of taking as follows:
a high water level beach area directly buried pipeline mounting structure comprises a rectangular caisson without an upper cover, wherein two opposite side walls of the caisson are provided with one or more mounting openings for placing directly buried pipelines; the bottom of the mounting opening is sequentially provided with a steel sleeve, a flexible filling material layer, a working pipe outer protective layer and a working pipe from outside to inside, wherein a heat insulation layer is arranged between the working pipe outer protective layer and the working pipe, the working pipe outer protective layer, the working pipe and the heat insulation layer between the working pipe outer protective layer and the working pipe form a directly buried pipeline, a plugging steel plate is arranged above the steel sleeve in the mounting opening, and concrete is poured and filled in the caisson.
Furthermore, the mounting opening is concave, the bottom of the mounting opening is semicircular, and the upper part of the mounting opening is rectangular circumscribed to the semicircle.
Furthermore, the thickness of the steel sleeve is 0.2-1cm, the thickness of the flexible filling material layer (such as flexible filler, commercially available GB flexible filler, SR flexible filler, preferably flame-retardant flexible filling material layer, such as commercially available flexible flame-retardant fireproof clay or fireproof clay) is 0.5-3cm, the thickness of the outer protective layer of the working pipe is 0.2-1.8 cm, the outer protective layer of the working pipe is generally made of glass fiber reinforced plastics, polyethylene and other materials, is cylindrical, and is wrapped on the periphery of the working pipe, and a polyurethane foam heat insulation layer is arranged between the outer protective pipe and the working pipe.
Furthermore, the width of the mounting opening (such as the semi-circle diameter at the bottom of the mounting opening) is equal to or slightly larger than the diameter (generally 5-140 cm) of the steel sleeve (1-2 mm larger), and the distance from the circle center of the semi-circle to the bottom surface of the box body is 1/2-3/4 of the height of the box body.
Further, the number of installation openings depends on the number of buried pipes to be laid.
Further, when the number of the mounting openings on the same side wall is more than two, the distance between the mounting openings may be 10-50 cm, for example, 30 cm.
The length, width and height of the box body are generally determined according to the diameter of a buried pipeline (working pipe) to be laid, the larger the diameter and the larger the number of the buried pipelines to be laid, the larger the length, width and height of the buried pipeline, for example, the length, width and height can be 1-5 m, 0.5-2 m and 0.7-3 m, and a person skilled in the art can determine the diameter of the buried pipeline. The caisson can be made of glass fiber reinforced plastic or metal materials, and the thickness of the caisson wall can be 0.2-1 cm.
The direct-buried pipeline can be a prefabricated direct-buried heat insulation pipe and generally comprises a working pipe (working steel pipe), a heat insulation layer (preferably a polyurethane heat insulation layer) and a working pipe outer protective layer (generally a polyethylene or glass fiber reinforced plastic outer protective layer). The inner layer is a working steel pipe (the diameter range is generally 5-140 cm, the thickness is 0.35-1.8 cm), and a seamless steel pipe or a spiral welded pipe is generally selected; the outer layer is a high-density polyethylene or glass fiber reinforced plastic protective layer (the thickness is 0.2-1.8 cm, preferably 0.3-1.8 mm); the middle layer is a polyurethane heat-insulating layer (the thickness is 3-10 cm), and a high-pressure foaming machine is used for injecting rigid polyurethane foam stock solution into a cavity formed between the steel pipe and the outer protective layer at one time.
The utility model discloses further provide a method of high water level mud flat area direct-burried pipeline installation, it includes following step:
(1) firstly, placing a caisson into a working pit at a welding port of a pipeline, taking the caisson as a working space for welding the directly buried pipeline, and removing water flowing into the caisson from an installation port of the caisson by using a water pump.
(2) Then the directly buried pipeline penetrates through the reserved mounting openings on the two side walls, a welding joint of the directly buried pipeline is located in the middle position of the caisson, the directly buried pipeline is welded, a working pipe outer protective layer is mounted on the directly buried pipeline located in the caisson after welding is finished, flame-retardant flexible filling materials are mounted outside the working pipe outer protective layer, a steel sleeve is welded outside the flame-retardant flexible filling materials, the diameter of the steel sleeve is the same as the diameter of a semicircle at the bottom of the mounting opening, the steel sleeve is in seamless connection with the mounting opening, and finally, a plugging steel plate is used for welding and plugging the mounting opening.
(3) And after plugging is finished, pouring concrete to fill the caisson.
The type of the concrete is preferably C20 plain concrete.
The invention has the beneficial effects that: the utility model provides a drainage problem of direct-burried pipeline when high water level welding, increased the pipeline counter weight simultaneously, prevent the pipeline come-up.
Drawings
Fig. 1 is the structural schematic diagram of the directly-buried pipeline installation caisson in the high water level beach zone of the utility model.
Fig. 2 is the utility model discloses high water level mud flat area directly buries the plan view of pipeline mounting structure.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a sectional view B-B of fig. 2.
Description of reference numerals:
1-caisson, 2-working pipe, 3-working pipe outer sheath, 4-flame-retardant flexible filling material, 5-steel sleeve, 6-blocking steel plate and 7-mounting opening.
Detailed Description
The invention is further illustrated by the following figures and examples.
According to an embodiment of the present invention, as shown in fig. 1, there is provided a high water level beach zone directly-buried pipeline installation structure, which comprises a rectangular caisson 1 without an upper cover, wherein two opposite side walls of the caisson are provided with one or more installation openings 7 for placing directly-buried pipelines; steel casing 5 that sets gradually from outside to inside in the installing port bottom, flexible filling material layer (for example, the fire-retardant fire prevention clay of flexibility of market or fire prevention mud layer) 4, work outside of tubes sheath (polyethylene or glass steel) 3 and work pipe 2 and the heat preservation (not shown) between work outside of tubes sheath 3 and work pipe 2, work pipe (work steel pipe), heat preservation (preferred polyurethane heat preservation), work outside of tubes sheath (usually polyethylene or glass steel outer jacket) three layer construction constitutes the direct-burried pipeline, shutoff steel sheet 6 that sets up in the steel casing top in the installing port, wherein the caisson intussuseption is filled with the concrete.
The mounting opening 7 is concave, the bottom of the mounting opening is semicircular, and the upper part of the mounting opening is rectangular circumscribed to the semicircle.
The thickness of the steel sleeve can be 0.2-1cm, the thickness of the flexible filling material layer (preferably a flame-retardant flexible filling material layer) can be 0.5-3cm, and the thickness of the outer sheath (polyethylene or glass fiber reinforced plastic) of the working pipe can be 0.2-1.5 cm.
The diameter of the semicircle at the bottom of the mounting opening is equal to or slightly larger than the diameter (generally 14-166 cm) of the steel sleeve (for example, 1-2 mm larger), and the distance between the circle center of the semicircle and the bottom surface of the box body is 1/2-3/4 of the height of the box body.
The number of mounting openings 7 depends on the number of buried pipes to be laid.
When the number of the mounting openings on the same side wall is more than two, the distance between the mounting openings is 15-20cm, for example, 18 cm.
The caisson is made of reinforced concrete,
the length, the width and the height of the box body of the rectangular caisson 1 are determined according to the diameter of the buried pipeline to be laid, and the larger the diameter and the larger the number of the buried pipeline to be laid are, the larger the length, the width and the height of the buried pipeline are.
For example, the box body of the rectangular caisson 1 can have the dimensions of 1-5 m in length, 0.5-2 m in width and 0.7-3 m in height, the caisson can be made of glass fiber reinforced plastic or metal materials, and the box wall thickness can be 0.2-1 cm.
Examples
A method for installing a directly-buried pipeline in a high-water-level beach zone comprises the following steps:
(1) firstly, a caisson (the length, the width and the height of a box body are 3m, 1m and 1.5m, and the thickness of the box wall is 5mm) is placed in a working pit at a welding port of a pipeline, the caisson is used as a working space for welding the directly buried pipeline, and water flowing into the caisson from a mounting port of the caisson is removed by using a water pump.
(2) Then a directly buried pipeline (the directly buried thermal insulation pipe is a factory pre-manufactured product of a working pipe, a thermal insulation layer and an outer protective layer) 2 (the diameter of the outer protective pipe is 95.5cm, the thickness of the directly buried pipeline is 14mm) penetrates through a mounting port 7 (the width of the outer protective pipe is 102cm) reserved on two side walls, as shown in figures 2, 3 and 4, a welding joint of the directly buried pipeline is positioned in the middle position of a caisson, the working pipe 2 of the directly buried pipeline is welded, after the welding of the working pipe 2 is finished, a thermal insulation joint is carried out at the welding position of the working pipes of the directly buried pipeline on two sides, a thermal insulation buckle is carried out at the polyethylene outer protective layer 3 (the thickness of 1.4cm) at the welding position, a flexible filling material (a fireproof daub layer) 4 with the thickness of about 9mm is arranged outside the protective layer of the working pipe, a flame-retardant steel sleeve 5 (the thickness of 0.5cm) is welded, and finally, welding and plugging the mounting port by using a plugging steel plate 6.
(3) And C20 plain concrete is used for pouring and filling the caisson after plugging is finished.
The utility model provides a drainage problem of direct-burried pipeline when high water level welding, increased the pipeline counter weight simultaneously, prevent the pipeline come-up.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above teachings. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (8)
1. A high water level beach area directly buried pipeline mounting structure comprises a rectangular caisson without an upper cover, wherein two opposite side walls of the caisson are provided with one or more mounting openings for placing directly buried pipelines; the steel sleeve, the flexible filling material layer, the outer working pipe protective layer and the working pipe are sequentially arranged at the bottom of the mounting opening from outside to inside, a heat insulation layer is arranged between the outer working pipe protective layer and the working pipe, the outer working pipe protective layer, the working pipe and the heat insulation layer between the outer working pipe protective layer and the working pipe form a directly buried pipeline, a plugging steel plate is arranged above the steel sleeve in the mounting opening, and concrete is poured and filled in the caisson.
2. The high-water-level beach belt directly-buried pipeline installation structure as claimed in claim 1, wherein the installation opening is concave, the bottom of the installation opening is semicircular, and the upper part of the installation opening is rectangular which is circumscribed to the semicircle.
3. The high-water-level beach belt directly-buried pipeline installation structure as claimed in claim 1 or 2, wherein the thickness of the steel sleeve is 0.2-1cm, the thickness of the flexible filling material layer is 0.5-3cm, and the thickness of the outer sheath of the working pipe is 0.2-1.8 cm.
4. The high-water-level beach belt directly-buried pipeline installation structure as claimed in claim 1 or 2, wherein the diameter of the semicircle at the bottom of the installation opening is equal to or slightly larger than that of the steel sleeve, and the distance from the center of the semicircle to the bottom surface of the box body is 1/2-3/4 of the height of the box body.
5. The high-water-level beach belt directly-buried pipeline installation structure as claimed in claim 1 or 2, wherein when the number of the installation openings on the same side wall is more than two, the distance between the installation openings is 10-50 cm.
6. The high-water-level beach belt directly-buried pipeline installation structure as claimed in claim 1 or 2, wherein the working pipe is a working steel pipe, the diameter range is 5-140 cm, the thickness is 0.35-1.8 cm, the outer protective layer of the working pipe is a high-density polyethylene or glass fiber reinforced plastic protective layer, and the thickness is 0.3-1.8 mm; the heat preservation is the polyurethane heat preservation, and thickness is 3 ~ 10 cm.
7. The high-water-level beach belt directly-buried pipeline installation structure as claimed in claim 1 or 2, wherein the flexible filling material layer is a flexible fire-retardant fireproof mortar or fireproof mud layer.
8. The high-water-level beach belt directly-buried pipeline installation structure as claimed in claim 1 or 2, wherein the box body of the rectangular caisson has the dimensions of 1-5 m long, 0.5-2 m wide and 0.7-3 m high, and the thickness of the box wall is 0.2-1 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021240729.3U CN212564706U (en) | 2020-06-30 | 2020-06-30 | High water level mud flat area directly buries pipeline mounting structure |
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| CN202021240729.3U CN212564706U (en) | 2020-06-30 | 2020-06-30 | High water level mud flat area directly buries pipeline mounting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863346A (en) * | 2021-10-25 | 2021-12-31 | 南京苏夏设计集团股份有限公司 | Directly-buried steam pipeline caisson structure and construction method |
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2020
- 2020-06-30 CN CN202021240729.3U patent/CN212564706U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863346A (en) * | 2021-10-25 | 2021-12-31 | 南京苏夏设计集团股份有限公司 | Directly-buried steam pipeline caisson structure and construction method |
| CN113863346B (en) * | 2021-10-25 | 2023-01-24 | 南京苏夏设计集团股份有限公司 | Directly-buried steam pipeline caisson structure and construction method |
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