CN216843641U - Prefabricated direct-burried electric tracing insulating tube - Google Patents
Prefabricated direct-burried electric tracing insulating tube Download PDFInfo
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- CN216843641U CN216843641U CN202123342529.6U CN202123342529U CN216843641U CN 216843641 U CN216843641 U CN 216843641U CN 202123342529 U CN202123342529 U CN 202123342529U CN 216843641 U CN216843641 U CN 216843641U
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Abstract
The utility model relates to a prefabricated direct-burried electric tracing insulating tube, include: the heat-insulation and corrosion-prevention device comprises a working pipe, a heat-insulation layer, a guide assembly, an electric heat tracing structure, an outer protection steel pipe and an anti-corrosion layer; the working pipe is arranged at the center of the heat preservation pipe, the heat preservation layer is arranged outside the working pipe, the outer layer of the heat preservation layer is provided with an outer protection steel pipe, and the outer layer of the outer protection steel pipe is provided with an anticorrosive layer; the guide assembly is arranged between the working pipe and the outer protective steel pipe, and the electric heat tracing structure is arranged outside the working pipe; can directly carry out buried construction with the prefabricated electric heat tracing insulating pipe without manufacturing a pipe gallery. Meanwhile, the problem of high manufacturing cost of the pipe gallery is solved; the problems that the sealing and waterproof effects of the outer protective layer are poor, the lap joint seam is easy to enter water, so that the heat insulation material absorbs water and sinks, and the heat insulation effect is poor when heat insulation construction is carried out on site can be solved; the circumferential lap joint of the outer protective layer is too much; the heat-insulating material has high heat conductivity coefficient, large heat dissipation loss and poor heat-insulating effect; the on-site heat preservation quality is difficult to control, the working procedure is complex, the time is long, the efficiency is low, the engineering cost is high and the like.
Description
Technical Field
The utility model relates to a prefabricated direct-burried electric heat tracing insulating tube for solve the unable prefabricated production of direct-burried electric heat tracing insulating tube, later stage operation maintenance high grade problem.
Background
The purpose of installing the electric heat tracing pipe in the pipeline is to supplement heat loss caused by the temperature difference between the inside and the outside of the pipeline shell so as to maintain the heat balance of fluid in the pipeline and maintain the medium in a pipe network in a fixed temperature range for a long time, and no manufacturer currently manufactures a direct-buried electric heat tracing pipe into a prefabricated product. According to the prior construction method, the pipe networks are installed in a pipe gallery, after a construction unit finishes installing the working pipes, the electric tracing bands are installed on the outer surfaces of the working pipes, and a reproduction field is used for installing the heat insulation layer and the outer protection layer. The material of the heat-insulating layer is mostly soft materials such as glass wool, rock wool and the like; the outer protective layer is mostly made of polyethylene.
When the structure is used for heat preservation construction on site, the following disadvantages exist: firstly, construction is needed in a pipe gallery, and the manufacturing cost of the pipe gallery is extremely high; secondly, the lap joint of the outer protective layer constructed on site is easy to enter water, so that the heat insulation material is deformed by water absorption, and meanwhile, the heat insulation material is high in water absorption heat conductivity coefficient, large in heat dissipation loss and poor in heat insulation effect; the process is complex, the on-site heat preservation quality is difficult to control, the construction time is long, the efficiency is low, and the engineering cost is increased; in case of problems of the electric tracing band and the need of maintenance or replacement, the problems can be solved only by completely removing the heat-insulating layer and the outer protective layer, and the electric tracing band is high in cost and long in working time.
Even though the insulating pipes developed in the prior art are prefabricated, the application environment is in overhead pipelines.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model relates to a prefabricated direct-burried electric heat tracing insulating tube can need not to make piping lane, directly carries out the buried construction with prefabricated electric heat tracing insulating tube.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a prefabricated direct-burried electric tracing insulating tube includes: the device comprises a working pipe, a heat insulation layer, a guide assembly, an electric heat tracing structure, an outer protection steel pipe and an anticorrosive layer; the working pipe is arranged at the center of the heat preservation pipe, the heat preservation layer is arranged outside the working pipe, the outer layer of the heat preservation layer is provided with an outer protection steel pipe, and the outer layer of the outer protection steel pipe is provided with an anticorrosive layer; the guide assembly is arranged between the working pipe and the outer protective steel pipe, and the electric heat tracing structure is arranged outside the working pipe;
furthermore, the guide assembly is arranged in the heat insulation layer between the working pipe and the outer protective steel pipe; the guide assembly is used for supporting the working pipe and the outer protecting steel pipe to be concentric;
further, the guide assembly comprises: the opening of the annular support is connected through a fastener, the open annular support is of a sandwich structure, a plurality of reinforcing ribs which are arranged at equal angles are arranged in the inner ring of the sandwich layer, a rolling device is respectively arranged on the outer diameter of the annular support corresponding to each reinforcing rib, and the annular support of the guide assembly is abutted against the inner diameter of the outer protection steel pipe through the rolling devices;
further, a heat insulation pad is arranged at the inner diameter of the annular support, the outer diameter of the heat insulation pad is in contact with the inner diameter of the inner layer of the annular support, and the inner diameter of the heat insulation pad is matched with the outer diameter of the working pipe;
further, the width of the annular bracket is equal to that of the heat insulation pad;
further, the fastener connection is in a bolt connection mode;
the reinforcing ribs are arranged according to the pipe diameter of the annular support, at least 4 reinforcing ribs are arranged, the angles among the 4 reinforcing ribs are the same, and the included angle is 90 degrees;
the rolling device is a ball and is used for conveniently mounting the annular bracket and the outer protecting steel pipe;
furthermore, the electric tracing structure is fixed outside the working pipe through a heat insulation pad, at least one set of electric tracing structure is arranged at the lower half part of the whole pipeline according to the actual requirement of the heat insulation pipe, and the electric tracing effect can be ensured;
the electric heat tracing structure can also be fixed outside the working pipe through iron wires or other materials;
further, each set of the electric heat tracing structure comprises: the electric tracing band is arranged in the electric tracing sleeve in a penetrating way;
furthermore, in order to facilitate the field to lead the electric tracing band into the electric tracing sleeve, the two ends of the electric tracing sleeve are smaller than the length of the working pipe.
In the technical scheme, the whole prefabricated form is formed by a working pipe, a heat insulation layer, a heat insulation pad, an annular bracket, an outer protective steel pipe and an electric tracing structure; during installation, the electric heat tracing structure is placed in the heat insulation pad, and the heat insulation pad is sleeved on the working pipe; then the open type annular bracket of the guide assembly is sleeved on the outer diameter of the heat insulation pad and is fixed through a fastener in the annular bracket; finally, the guide assembly together with the inner working pipe is connected in a sliding mode into the outer protecting steel pipe through the balls.
When the prefabricated direct-buried electric heat tracing heat preservation pipe adopting the technical scheme is used for on-site connection, the adopted structure comprises two prefabricated direct-buried electric heat tracing heat preservation pipe units, the outer diameter area of the connection position of working pipes in the two prefabricated electric heat tracing heat preservation pipe units is a joint, the joint is filled through a joint heat preservation layer, a joint outer protection steel pipe is arranged outside the joint heat preservation layer, and a joint anticorrosion layer is arranged outside the joint outer protection steel pipe;
in the joint structure of the prefabricated direct-buried electric tracing heat preservation pipe, two end parts of the outer protection steel pipe at the joint are in butt welding with the end parts of the outer protection steel pipes in the two adjacent prefabricated electric tracing heat preservation pipe units;
and two end parts of the anticorrosive layer at the joint are butted with the anticorrosive layers in the two adjacent prefabricated electric tracing heat preservation pipe units.
The utility model discloses an after the on-the-spot joint keeps warm, if the electric tracing area goes wrong or need to be changed the electric tracing area, need not demolish the heat preservation and the outer jacket of whole pipeline and can maintain and change, only need to demolish the heat preservation and the outer jacket that the on-the-spot connects the position and just can maintain and change the electric tracing area.
Furthermore, the outer protecting steel pipe adopts a steel pipeline and is arranged outside the heat preservation layer to effectively bear the weight of the buried soil.
Furthermore, the heat-insulating layer is made of inorganic soft heat-insulating materials.
The utility model has the advantages that:
adopt above-mentioned technical scheme's prefabricated direct-burried electric heat tracing insulating tube, can need not to make the piping lane, directly carry out the buried construction with prefabricated electric heat tracing insulating tube. Meanwhile, the problem of high manufacturing cost of the pipe gallery is solved; the problems that the sealing and waterproof effects of the outer protective layer are poor, the lap joint seam is easy to enter water, so that the heat insulation material absorbs water and sinks, and the heat insulation effect is poor when heat insulation construction is carried out on site can be solved; the circumferential lap seam of the outer protective layer is too much; the heat-insulating material has high heat conductivity coefficient, large heat dissipation loss and poor heat-insulating effect; the on-site heat preservation quality is difficult to control, the working procedure is complex, the time is long, the efficiency is low, the engineering cost is high and the like.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a view from direction a-a of fig. 1.
Fig. 3 is the structure schematic diagram of the field joint before heat preservation of the utility model.
Fig. 4 is the structure schematic diagram of the field joint after heat preservation.
In the figure, 1, a working pipe, 2, a heat preservation layer, 3, an outer protection steel pipe, 4, an anticorrosive layer, 5, an open type annular support, 6, an annular support interlayer, 7, a reinforcing rib, 8, a ball, 9, a fastener, 10, a heat insulation pad, 11, an electric heat tracing sleeve, 12, an electric heat tracing band, 13, a joint, 14, a joint heat preservation layer, 15, an outer protection steel pipe at the joint, 16 and a joint anticorrosive layer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments.
A prefabricated direct-burried electric tracing thermal insulation pipe as shown in fig. 1-2, comprising: the heat insulation pipe comprises a working pipe 1, a heat insulation layer 2, a guide assembly, an electric heat tracing structure, an outer protecting steel pipe 3 and an anticorrosive layer 4; the most central part of the heat preservation pipe 1 is a working pipe 1, the heat preservation layer 2 is arranged outside the working pipe 1, an outer protection steel pipe 3 is arranged on the outer layer of the heat preservation layer 2, and an anti-corrosion layer 4 is arranged on the outer layer of the outer protection steel pipe 3; the guide assembly is arranged between the working pipe 1 and the outer protective steel pipe 3, and the electric heat tracing structure is arranged outside the working pipe 1;
further, the guide assembly is arranged in the heat insulation layer 2 between the working pipe 1 and the outer protecting steel pipe 3; the guide assembly is used for supporting the working pipe 1 and the outer protecting steel pipe 3 to be concentric;
further, the guide assembly comprises: the opening type annular support 5 is characterized in that the opening of the annular support 5 is connected through a fastener 9, the open type annular support 5 is of a sandwich structure, a plurality of reinforcing ribs 7 which are arranged at equal angles are arranged in an inner ring of a sandwich layer 6, a rolling device is respectively arranged on the outer diameter of the annular support 5 corresponding to the position of each reinforcing rib 7, and the annular support 5 of the guide assembly is abutted to the inner diameter of the outer protection steel pipe 3 through the rolling device;
further, a heat insulation pad 10 is arranged at the inner diameter of the annular support 5, the outer diameter of the heat insulation pad 10 is in contact with the inner diameter of the inner layer of the annular support 5, and the inner diameter of the heat insulation pad 10 is matched with the outer diameter of the working pipe 1;
further, the width of the annular bracket 5 is equal to that of the heat insulation pad 10;
in the embodiment, the fastening piece 9 is connected in a bolt connection mode;
the reinforcing ribs are arranged according to the pipe diameter of the annular support, at least 4 reinforcing ribs are arranged, the angles among the 4 reinforcing ribs are the same, and the included angle is 90 degrees;
in this embodiment, the number of the reinforcing ribs 7 is set to 6, and the angle between every two adjacent reinforcing ribs 7 is 60 °;
the rolling device is a ball 8;
the electric heat tracing structure is fixed outside the working pipe 1 through the heat insulation pad 10, at least one set of electric heat tracing structure is arranged at the lower half part of the whole pipeline according to the actual requirement of the heat insulation pipe, and the electric heat tracing effect can be ensured;
further, each set of the electric heat tracing structure comprises: the electric tracing band comprises an electric tracing sleeve 11 and an electric tracing band 12, wherein the electric tracing band 12 penetrates through the electric tracing sleeve 11;
in the technical scheme, the whole prefabricated form is formed by a working pipe 1, a heat insulation layer 2, a heat insulation pad 10, an annular bracket 5, an outer protection steel pipe 3 and an electric heat tracing structure; when the electric heat tracing device is installed, the electric heat tracing structure is placed in the heat insulation pad 10, and the heat insulation pad 10 is sleeved on the working pipe 1; then the open type annular bracket 5 of the guide assembly is sleeved on the outer diameter of the heat insulation pad 10 and is fixed through a fastener 9 in the annular bracket 5; finally, the guide assembly together with the inner working pipe 1 is slidably connected into the outer protecting steel pipe 3 through the ball 8.
As shown in fig. 3-4, when the prefabricated direct-buried electric tracing heat preservation pipe adopting the technical scheme is used for field joint, the adopted structure comprises two prefabricated direct-buried electric tracing heat preservation pipe units, the outer diameter area of the joint position of the working pipe 1 in the two prefabricated electric tracing heat preservation pipe units is a joint position 13, the joint position 13 is filled through a joint position heat preservation layer 4, a joint position outer protection steel pipe 15 is arranged outside the joint position heat preservation layer 14, and a joint position anticorrosive layer 16 is arranged outside the joint position outer protection steel pipe 15;
in the joint structure of the prefabricated direct-buried electric tracing heat preservation pipe, two ends of an outer protection steel pipe 15 at the joint are in butt welding with the ends of outer protection steel pipes 3 in two adjacent prefabricated electric tracing heat preservation pipe units;
and two end parts of the anticorrosive layer 16 at the joint are butted with the anticorrosive layers 4 in the two adjacent prefabricated electric heat tracing heat preservation pipe units.
After the installation of the working pipe is completed, the electric tracing band 12 is inserted into the electric tracing socket 11. On the premise of not influencing the effect of the electric tracing band, the electric tracing band can be conveniently maintained at the later stage. If the electric tracing band has problems or needs to be replaced, the heat-insulating layer and the outer protective layer of the whole pipeline can be maintained and replaced without being detached, and the electric tracing band can be maintained and replaced only by detaching the heat-insulating layer and the outer protective layer at the site joint position. By adopting the technical scheme, the prefabricated direct-buried electric tracing heat preservation pipe can solve the problems that the sealing and waterproof effects of the outer protective layer are poor, the lap joint seam is easy to enter water to cause the heat preservation material to sink due to water absorption, and the heat preservation effect is poor when the heat preservation construction is carried out on site; the circumferential lap joint of the outer protective layer is too much; the heat-insulating material has high heat conductivity coefficient, large heat dissipation loss and poor heat-insulating effect; the on-site heat preservation quality is difficult to control, the working procedure is complex, the time is long, the efficiency is low, the engineering cost is high and the like.
The above, only be the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and all the technicians familiar with the technical field are in the technical scope of the present invention, according to the technical scheme of the present invention and the concept of the present invention equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a prefabricated direct-burried electric tracing insulating tube which characterized in that includes: the heat-insulation and corrosion-prevention device comprises a working pipe, a heat-insulation layer, a guide assembly, an electric heat tracing structure, an outer protection steel pipe and an anti-corrosion layer; the working pipe is arranged at the center of the heat preservation pipe, the heat preservation layer is arranged outside the working pipe, the outer layer of the heat preservation layer is provided with an outer protection steel pipe, and the outer layer of the outer protection steel pipe is provided with an anticorrosive layer; the guide assembly is arranged between the working pipe and the outer protective steel pipe, and the electric heat tracing structure is arranged outside the working pipe.
2. The prefabricated direct-burried electric tracing thermal insulation pipe of claim 1, characterized in that: the guide assembly is arranged in the heat insulation layer between the working pipe and the outer protective steel pipe.
3. The prefabricated direct-burried electric tracing thermal insulation pipe of claim 1, characterized in that: the guide assembly comprises: the opening type annular support is of a sandwich structure, a plurality of reinforcing ribs arranged at equal angles are arranged on an inner ring of the sandwich layer, a rolling device is arranged on the outer diameter of the annular support corresponding to the position of each reinforcing rib respectively, and the annular support of the guide assembly is abutted to the inner diameter of the outer protection steel pipe through the rolling device.
4. The prefabricated direct-burried electric tracing thermal insulation pipe of claim 3, characterized in that: and the inner diameter of the annular support is also provided with a heat insulation pad, the outer diameter of the heat insulation pad is in contact with the inner diameter of the inner layer of the annular support, and the inner diameter of the heat insulation pad is matched with the outer diameter of the working pipe.
5. The prefabricated direct-burried electric tracing thermal insulation pipe of claim 3, characterized in that: the fastener is connected in a bolt connection mode.
6. The prefabricated direct-burried electric tracing thermal insulation pipe of claim 3, characterized in that: the rolling device is a ball.
7. The prefabricated direct-burried electric tracing thermal insulation pipe of claim 4, characterized in that: electric heat tracing structure pass through the heat insulating mattress to be fixed at the working tube outside, electric heat tracing structure is one set and sets up in the latter half position of whole pipeline at least, every set electric heat tracing structure include: the electric tracing band is arranged in the electric tracing sleeve in a penetrating way.
8. The prefabricated direct-burried electric tracing thermal insulation pipe of any one of claims 1 to 7, wherein: when the heat-insulating pipe is used for field joint, the adopted structure comprises two prefabricated direct-buried electric heat-insulating pipe units, the outer diameter area of the joint position of a working pipe in the two prefabricated electric heat-insulating pipe units is the joint position, the joint position is filled through the joint position heat-insulating layer, the outer part of the joint position heat-insulating layer is provided with a joint position outer protection steel pipe, and the outer part of the joint position outer protection steel pipe is provided with a joint position anticorrosive layer.
9. The prefabricated direct-burried electric tracing thermal insulation pipe of claim 8, characterized in that: and two ends of the outer protective steel pipe at the joint are in butt welding with the ends of the outer protective steel pipes in the two adjacent prefabricated electric tracing heat insulation pipe units.
10. The prefabricated direct-burried electric tracing thermal insulation pipe of claim 8, characterized in that: and two end parts of the anticorrosive layer at the joint are butted with the anticorrosive layers in the two adjacent prefabricated electric tracing heat preservation pipe units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123342529.6U CN216843641U (en) | 2021-12-29 | 2021-12-29 | Prefabricated direct-burried electric tracing insulating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123342529.6U CN216843641U (en) | 2021-12-29 | 2021-12-29 | Prefabricated direct-burried electric tracing insulating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216843641U true CN216843641U (en) | 2022-06-28 |
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ID=82112982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123342529.6U Active CN216843641U (en) | 2021-12-29 | 2021-12-29 | Prefabricated direct-burried electric tracing insulating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216843641U (en) |
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2021
- 2021-12-29 CN CN202123342529.6U patent/CN216843641U/en active Active
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