CN210566892U - High-density polyethylene prefabricated direct-buried special-shaped crossing tee joint - Google Patents
High-density polyethylene prefabricated direct-buried special-shaped crossing tee joint Download PDFInfo
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- CN210566892U CN210566892U CN201921008695.2U CN201921008695U CN210566892U CN 210566892 U CN210566892 U CN 210566892U CN 201921008695 U CN201921008695 U CN 201921008695U CN 210566892 U CN210566892 U CN 210566892U
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Abstract
The utility model discloses a high density polyethylene prefabricated direct-buried abnormal shape stridees across tee bend, including trunk line, branch pipe and arc external pipe, the trunk line surface communicates arc external pipe one end, the arc external pipe other end communicates the branch pipe; the included angle between the main pipeline and the arc-shaped external pipe is an acute angle, and the included angle between the arc-shaped external pipe and the branch pipe is an obtuse angle; a reinforcing plate is welded at the intersection of the main pipeline and the arc-shaped external pipe; the main pipeline is a linear pipeline, and the branch pipes and the arc-shaped external pipes form bending type reducing pipes; the main pipeline, the branch pipes and the arc-shaped external connecting pipes are formed by sequentially and concentrically laminating a water supply pipe layer, an insulating layer and an external protecting pipe layer from inside to outside; the utility model improves the quality of the welding seam at the splicing position of the three-way outer protecting pipe, reduces the cracking rate of the welding seam of the outer protecting pipe, enhances the strength of the intersecting position of the pipe fittings and prevents the pipe fittings from cracking; the heat preservation effect of the heat preservation layer is improved, and the heat dissipation loss is reduced.
Description
Technical Field
The utility model relates to a heterotypic tee bend especially relates to prefabricated direct-burried heterotypic crossing over tee bend of high density polyethylene.
Background
Reducing the tee joint: the branch pipe is called a reducing tee with different diameters from the other two branch pipes. The equal diameter tee joint is called as the equal diameter tee joint. The reducing tee is widely applied to construction and maintenance of industrial projects such as petrochemical industry, petroleum and natural gas, liquefied gas, fertilizers, power plants, nuclear power, shipbuilding, papermaking, pharmacy, food sanitation, urban construction and the like. In the hot water supply process, a directly buried reducer tee is also often used. Because the restriction of tee bend structure is strideed across to the reducing, the outer pillar splice is more, and the splice welding seam is easy to split, and simultaneously, the looks through department of tee bend trunk line and bleeder leads to hot water infiltration because of stress concentration, easily produces the fracture phenomenon, and because the restriction of tee bend structure is strideed across to the reducing, pipe fitting heat preservation thickness center deviation is great, leads to the heat loss of whole pipe network great.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a tee bend is strideed across to prefabricated direct-burried abnormal shape of high density polyethylene can solve the concatenation department that current direct-burried abnormal shape stridees across the tee bend and exists and easily crack, the great defect of heat loss.
In order to solve the technical problem, the utility model provides a following technical scheme: the high-density polyethylene prefabricated direct-buried special-shaped crossing tee joint comprises a main pipeline, branch pipes and an arc-shaped external pipe, wherein the outer surface of the main pipeline is communicated with one end of the arc-shaped external pipe, and the other end of the arc-shaped external pipe is communicated with the branch pipes; the included angle between the main pipeline and the arc-shaped external pipe is an acute angle, and the included angle between the arc-shaped external pipe and the branch pipe is an obtuse angle; a reinforcing plate is welded at the intersection of the main pipeline and the arc-shaped external pipe; the main pipeline is a linear pipeline, and the branch pipes and the arc-shaped external pipes form bending type reducing pipes; the main pipeline, the branch pipes and the arc-shaped external pipes are formed by sequentially and concentrically attaching a water supply pipe layer, a heat insulation layer and an outer protection pipe layer from inside to outside.
As an optimized technical scheme of the utility model, the reinforcing plate is the electric hot melting cover, the electric hot melting cover adopts the special electric heating net that PE panel made.
As a preferred technical scheme of the utility model, it is stereoplasm polyethylene arc pipe to take over outward, just the reinforcing plate is kept away from to the outer arc centrifugation direction of taking over.
As an optimized technical proposal of the utility model, the water supply pipe layer is a steel pipe.
As an optimized technical proposal of the utility model, the heat-insulating layer is made by foaming environment-friendly polyurethane rigid foam.
As an optimized technical scheme of the utility model, outer pillar layer surface distributes along welding bead equidistance has radiation crosslinking polyethylene heat shrink area, radiation crosslinking polyethylene heat shrink area is made for radiation crosslinking polyethylene sheet and special hot melt adhesive complex.
As an optimal technical scheme of the utility model, the angle of the bending reducing pipe and the trunk line that the arc is external to be taken over and the branch pipe is constituteed is 0-180 degrees at the horizontal plane, just the arc is external to take over and the trunk line pass through the department all the time reinforcing plate.
Compared with the prior art, the utility model discloses the beneficial effect that can reach is: the utility model improves the quality of the welding seam at the splicing position of the three-way outer protecting pipe, reduces the cracking rate of the welding seam of the outer protecting pipe, enhances the strength of the intersecting position of the pipe fittings and prevents the pipe fittings from cracking; the heat preservation effect of the heat preservation layer is improved, and the heat dissipation loss is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a composite structure diagram of the present invention;
wherein: 1. a main pipeline; 2. a branch pipe; 3. a reinforcing plate; 4. an arc outer connecting pipe; 5. a water supply pipe layer; 6. a heat-insulating layer; 7. an outer jacket layer.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1
Referring to fig. 1-2, the high-density polyethylene prefabricated direct-buried special-shaped crossing tee comprises a main pipeline 1, branch pipelines 2 and an arc-shaped external pipe 4, wherein the outer surface of the main pipeline 1 is communicated with one end of the arc-shaped external pipe 4, and the other end of the arc-shaped external pipe 4 is communicated with the branch pipeline 2; the included angle between the main pipeline 1 and the arc-shaped external pipe 4 is an acute angle, and the included angle between the arc-shaped external pipe 4 and the branch pipe 2 is an obtuse angle; a reinforcing plate 3 is welded at the intersection of the main pipeline 1 and the arc-shaped external pipe 4; the main pipeline 1 is a straight pipeline, and the branch pipes 2 and the arc-shaped external pipes 4 form bending type reducing pipes; the main pipeline 1, the branch pipes 2 and the arc-shaped external connecting pipes 4 are formed by sequentially and concentrically attaching a water supply pipe layer 5, a heat insulation layer 6 and an outer protection pipe layer 7 from inside to outside.
The reinforcing plate 3 is an electric hot melting sleeve, the electric hot melting sleeve is a special electric heating net made of PE plates, and the reinforcing plate 3 is welded at the intersection of the main pipeline 1 and the branch pipeline 2, so that the strength of the intersection is increased, cracking is prevented, and the cracking phenomenon of the pipeline is reduced; the outer connecting pipe 4 is a hard polyethylene arc-shaped pipe, the arc centrifugal direction of the outer connecting pipe 4 is far away from the reinforcing plate 3, the outer connecting pipe 4 is connected between the main pipe 1 and the branch pipe 2, and the arc centrifugal direction is far away from the reinforcing plate 3, so that the outer connecting pipe 4 has a certain radian upwards, and the connection of the main pipe 1 and the branch pipe 2 at a specific angle, height and span is met; the water supply pipe layer 5 is a steel pipe, the heat insulation layer 6 is made of environment-friendly polyurethane rigid foam through foaming, the foamed polyurethane foam is adhered to the outer protective pipe layer 7, the heat conductivity coefficient of polyurethane is reduced through optimizing the raw material proportion, and the heat insulation layer 6 made of polyurethane rigid foam with excellent heat insulation performance is adopted, so that the heat insulation effect of the pipe fitting is improved, and the heat dissipation loss caused by the structural limitation of the pipe fitting is compensated; the outer protective pipe layer 7 is a radiation cross-linked polyethylene heat-shrinkable tape which is made by compounding a radiation cross-linked polyethylene sheet and a special hot melt adhesive, and a high-density polyethylene composite material is adopted as the outer protective pipe layer 7 of the pipe fitting, so that the performance indexes of the outer protective pipe, such as tensile strength, elongation at break and the like, are improved, and the cracking phenomenon of the outer protective pipe is reduced. When carrying out the complex of outer pillar layer 7 and pyrocondensation area, with the pyrocondensation area along the even fixed on outer pillar layer 7 of welding bead to give the pyrocondensation area with the flame gun and heat and make the firm bonding in pyrocondensation area on outer pillar layer 7, when giving the fixed knot roast pyrocondensation area, heat earlier for the fixed knot and make the moisture on the body get rid of totally, apply the pyrocondensation area again and connect and fix two pyrocondensation area ends with the stationary blade, then toast the pyrocondensation area, it overflows to have the glue at pyrocondensation area edge.
The angle of the bending reducing pipe and the main pipeline 1 formed by the arc-shaped external pipe 4 and the branch pipe 2 at the horizontal plane is 0-180 degrees, according to the operation requirement, when the design is carried out, under the condition that the normal communication of the branch pipe 2 and the arc-shaped external pipe is ensured, the branch pipe 2 and the main pipeline 1 can be kept parallel, or the branch pipe 2 and the main pipeline 1 are vertical in the horizontal direction, or the branch pipe 2 and the main pipeline 1 are designed into the communication modes with different angles on the horizontal plane according to the operation requirement, and the intersecting part of the arc-shaped external pipe 4 and the main pipeline 1 is always provided with the reinforcing plate 3.
The specific principle is as follows: the utility model provides a tee is strideed across to prefabricated direct-burried abnormal shape of high density polyethylene adopts high density polyethylene combined material as tee bend outer jacket layer 7, and outer jacket layer 7 that radiation cross-linked polyethylene sheet material and special hot melt adhesive were made has improved tee bend outer jacket's tensile strength and elongation at break performance index, has reduced outer jacket fracture phenomenon; the polyurethane hard foam between the outer protective pipe layer 7 and the water supply pipe layer 5 is foamed to form an insulating layer 6, and the foamed insulating layer 6 is adhered to the outer protective pipe layer 7; the heat conductivity coefficient of polyurethane is reduced by optimizing the proportion of raw materials, so that the heat insulation effect of the pipe fitting is improved, and the heat dissipation loss caused by the structural limitation of the pipe fitting is made up; by connecting the external pipe 4 between the main pipe 1 and the branch pipe 2 and the design that the arc centrifugal direction is far away from the reinforcing plate 3, the external pipe 4 has a certain radian upwards, so that the connection of the main pipe 1 and the branch pipe 2 at a specific angle, height and span is met; the reinforcing plate 3 increases the strength of the intersecting part, prevents cracking and reduces the cracking phenomenon of the pipeline.
The utility model improves the quality of the welding seam at the splicing position of the three-way outer protecting pipe, reduces the cracking rate of the welding seam of the outer protecting pipe, enhances the strength of the intersecting position of the pipe fittings and prevents the pipe fittings from cracking; the heat preservation effect of the heat preservation layer is improved, and the heat dissipation loss is reduced.
The embodiments of the present invention are not limited to the above embodiments, and according to the contents of the above embodiments of the present invention, the above preferred embodiments can also make modifications, replacements or combinations of other forms by using conventional technical knowledge and conventional means in the field without departing from the basic technical idea of the present invention, and the obtained other embodiments all fall within the scope of the present invention.
Claims (7)
1. Tee bend is strideed across to prefabricated direct-burried abnormal shape of high density polyethylene, including trunk line (1), branch pipe (2) and arc external tapping (4), its characterized in that: the outer surface of the main pipeline (1) is communicated with one end of an arc-shaped external pipe (4), and the other end of the arc-shaped external pipe (4) is communicated with the branch pipe (2); the included angle between the main pipeline (1) and the arc-shaped external pipe (4) is an acute angle, and the included angle between the arc-shaped external pipe (4) and the branch pipe (2) is an obtuse angle; a reinforcing plate (3) is welded at the intersection of the main pipeline (1) and the arc-shaped external pipe (4); the main pipeline (1) is a linear pipeline, and the branch pipes (2) and the arc-shaped external pipes (4) form bending type reducing pipes; trunk line (1), branch pipe (2) and arc are taken over outward (4) and are laminated the constitution from inside to outside concentric in proper order by water supply pipe layer (5), heat preservation (6) and outer pillar layer (7).
2. The prefabricated direct-burried heterotype spanning tee of high density polyethylene according to claim 1, characterized in that: the reinforcing plate (3) is an electric hot melting sleeve, and the electric hot melting sleeve is a special electric heating net made of PE plates.
3. The prefabricated direct-burried heterotype spanning tee of high density polyethylene according to claim 1, characterized in that: the external connection pipe (4) is a hard polyethylene arc pipe, and the arc centrifugal direction of the external connection pipe (4) is far away from the reinforcing plate (3).
4. The prefabricated direct-burried heterotype spanning tee of high density polyethylene according to claim 1, characterized in that: the water supply pipe layer (5) is a steel pipe.
5. The prefabricated direct-burried heterotype spanning tee of high density polyethylene according to claim 1, characterized in that: the heat-insulating layer (6) is made of environment-friendly polyurethane rigid foam through foaming.
6. The prefabricated direct-burried heterotype spanning tee of high density polyethylene according to claim 1, characterized in that: the outer surface of the outer protective pipe layer (7) is equidistantly distributed with radiation cross-linked polyethylene heat-shrinkable tapes along a weld bead, and the radiation cross-linked polyethylene heat-shrinkable tapes are made by compounding radiation cross-linked polyethylene sheets and special hot melt adhesives.
7. The prefabricated direct-burried heterotype spanning tee of high density polyethylene according to claim 1, characterized in that: the angle of the bending reducing pipe and the main pipeline (1) formed by the arc-shaped external pipe (4) and the branch pipe (2) on the horizontal plane is 0-180 degrees, and the intersection of the arc-shaped external pipe (4) and the main pipeline (1) is always provided with the reinforcing plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921008695.2U CN210566892U (en) | 2019-07-01 | 2019-07-01 | High-density polyethylene prefabricated direct-buried special-shaped crossing tee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921008695.2U CN210566892U (en) | 2019-07-01 | 2019-07-01 | High-density polyethylene prefabricated direct-buried special-shaped crossing tee joint |
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| Publication Number | Publication Date |
|---|---|
| CN210566892U true CN210566892U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921008695.2U Active CN210566892U (en) | 2019-07-01 | 2019-07-01 | High-density polyethylene prefabricated direct-buried special-shaped crossing tee joint |
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| Country | Link |
|---|---|
| CN (1) | CN210566892U (en) |
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2019
- 2019-07-01 CN CN201921008695.2U patent/CN210566892U/en active Active
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